Within the zoning districts established herein,
accessory uses or accessory buildings are permitted, provided that
any such use or building is customarily incidental to, subordinate
to and on the same lot as the principal use it serves except as otherwise
provided for herein.
The following accessory uses are permitted,
provided that a special permit is first obtained from the Board of
Appeals:
A. In residential zoning districts, accessory uses and
structures on a lot adjoining or immediately opposite and across a
road from the lot on which the principal use it serves is located,
provided that both lots are retained in identical ownership with respect
to both fee and nonfee interests.
B. Uses accessory to permitted scientific research or
scientific development or related production only if the Board finds
that such accessory use does not substantially derogate from the public
good. Such accessory use need not be located on the same lot as the
principal use it serves.
C. Other accessory uses requiring special permit authorization
are provided for within the various zoning districts established herein.
[Added 6-14-2007 by Order No. 2007-082]
A. Purpose and intent. It is the express purpose of this
section to accommodate distributed wind energy conversion facilities
in appropriate land-based locations, while minimizing any adverse
visual, safety and environmental impacts of the facilities. The section
enables the review of wind energy conversion facilities by the Town's
special permit granting authority, clarifying the criteria for siting
such a facility. This section is intended to be used in conjunction
with other regulations adopted by the Town, including historic district
regulations, site plan review and other local ordinances designed
to encourage appropriate land use and environmental protection. Further,
it is the express intent of this section that any special permit granted
hereunder run with the land and that any subsequent owner of said
land be bound by the terms and conditions of said special permit.
B. Definitions. As used in this section, the following
terms shall have the meanings indicated:
CLEAR AREA
The distance from the lowest point of the blade tip to the
ground.
HEIGHT
Height is measured from the grade at the base of the tower
to the top of the fixed tower (moveable blades are not included).
LAND-BASED
Wholly located on upland including any guy wires as may be
required.
WIND ENERGY CONVERSION FACILITY (WECF)
All equipment, machinery and structures utilized in connection
with the conversion of wind to electricity. This includes, but is
not limited to, all transmission, storage, collection and supply equipment,
substations, transformers, site access, service roads and machinery
associated with the use. A wind energy conversion facility may consist
of one or more wind turbines.
WIND TURBINE
A device that converts kinetic energy of the wind into rotational
energy to turn an electrical generator shaft.
C. District regulations.
(1)
Use regulations.
(a)
All wind energy conversion facilities or wind-monitoring
towers shall require a building permit and may be permitted only as
an accessory use to permitted uses in all zoning districts.
(b)
Wind energy conversion facility and wind-monitoring or meteorological towers. The construction of any wind energy conversion facility or wind-monitoring/meteorological tower shall be permitted in all zoning districts, subject to issuance of a special permit and provided the proposed use complies with all dimensional and special permit regulations set forth in §
240-125C (unless waived by the SPGA). Any subsequent change or modification of wind energy equipment shall be subject to review by the Building Commissioner.
(2)
Dimensional requirements.
(a)
Type. Tilt-up towers, fixed-guyed towers, freestanding
towers or other designs may be considered for approval by the SPGA.
Towers may not be attached to any residence or habitable structures.
(b)
Setback. The base of any WECF shall be set back
from any property line or road layout line by not less than 120% of
the proposed height of the tower if abutting residentially zoned properties
and 80% of the proposed height of the tower, if abutting nonresidentially
zoned properties. Guy wires or any WECF related construction not wholly
below grade, as may be required by the proposed design, shall be set
back at least 20 feet from property lines, and 30 feet from road layout
lines if located on, or adjacent to, residentially zoned property.
If located on nonresidentially zoned property and not abutting residentially
zoned property, guy wire setbacks may be reduced to five feet. Other
setbacks shall conform to the yard setbacks of the zone in which the
subject property is located. The SPGA may allow the setback to be
reduced as part of the special permit process if the project proponent
can demonstrate that additional height is needed and that the additional
benefits of the higher tower outweigh any increased adverse impacts.
D. Special permit regulations. The SPGA shall grant a
special permit only if it finds that the proposal complies with the
provisions of this Zoning Ordinance (unless waived) and is consistent
with the applicable criteria for granting special permits.
(1)
General. Proposed wind energy conversion facilities
shall be consistent with all applicable local, state and federal requirements,
including, but not limited to, all applicable electrical, construction,
noise, safety, environmental and communications requirements.
(a)
Demonstrated utility. The proponent shall demonstrate
that the proposed WECF efficiently generates electrical power.
(b)
Maintenance. A written maintenance plan shall
be submitted with the application for a special permit for review
and approval by the SPGA and shall be made a condition of said special
permit.
(2)
Design standards.
(a)
Visual impact. The proponent shall demonstrate
through project siting and proposed mitigation that the wind energy
conversion facility minimizes any impact on the visual character of
surrounding neighborhoods and the community. This may include, but
not be limited to, information regarding site selection, turbine design,
buffering, lighting. All electrical conduits shall be underground.
(b)
Color. Wind energy conversion facilities shall
be painted nonreflective muted colors that blend with the sky, without
graphics or other decoration.
(c)
Equipment shelters. All equipment necessary
for monitoring and operation of the wind energy conversion facilities
should preferably be contained within the turbine tower. If this is
infeasible, ancillary equipment may be located outside the tower,
provided it is contained either within an underground vault, or enclosed
within a separate structure or behind a year-round landscape or vegetated
buffer.
(d)
Lighting and signage.
[1]
Wind turbines shall be lighted only if required
by the Federal Aviation Administration (FAA). The proponent shall
provide a copy of the FAA's determination to establish the required
markings and/or lights for the structure.
[2]
Lighting of equipment structures and any other
facilities on site (except lighting required by the FAA) shall be
shielded from abutting properties.
(e)
Guy wires. Guy wires as may be utilized in the
construction of the tower shall be left totally unadorned. Nothing
shall be hung from or attached to said wires. To prevent unintended
contact by persons who may be on-site, landscaping or other approved
methods may be implemented. Exception: On nonresidentially zoned properties,
not abutting residential property, guy wires may be wrapped with a
colored sleeve only, to prevent unintended contact. Such sleeve shall
extend to a height not greater than 10 feet above grade.
(3)
Environmental standards.
(a)
Noise.
[1]
The wind energy conversion facility and associated
equipment shall conform to the provisions of the Department of Environmental
Protection's Division of Air Quality Noise Regulations (310 CMR 7.10).
A source of sound will be considered to be violating these regulations
if the source:
[a] Increases the broadband sound level
by more than 10 dB(A) above ambient; or
[b] Produces a pure tone condition:
when an octave bank center frequency sound pressure level exceeds
the two adjacent center frequency sound pressure levels by three decibels
or more.
[2]
"Ambient" is defined as the background A-weighted
sound level that is exceeded 90% of the time measured during equipment
hours. The ambient may also be established by other means with consent
from DEP. The ambient noise level shall be measured at the property
line when the WECF is located on a lot adjacent to residentially zoned
property. Otherwise, the special permit granting authority, in consultation
with the Department, shall determine whether such violations shall
be measured at the property line or at the nearest inhabited residence.
[3]
Upon complaint of an abutter, ambient and maximum
permitted decibel measurements shall be performed by an agent designated
by the SPGA. The report shall be submitted to the SPGA for review.
The fee for this service shall be paid by the complainant unless the
maximum permitted decibel level has been exceeded in which case the
owner of the system shall pay the fee.
[4]
If the maximum decibel readings are exceeded,
the installation shall be considered a nuisance. The nuisance violation
must be corrected within 90 days from notification of the violation,
and if the violation cannot be corrected, the wind energy system shall
be removed or relocated at the expense of the owner.
(b)
Shadowing/flicker. Wind energy conversion facilities
shall be sited in a manner that does not result in significant shadowing
or flicker impacts. The proponent has the burden of proving that this
effect does not have significant adverse impact on neighboring or
adjacent uses either through siting or mitigation.
(c)
Safety standards.
[1]
No hazardous materials or waste shall be discharged
on the site of any wind energy conversion facility. If any hazardous
materials or wastes are to be used on site, there shall be provisions
for full containment of such materials or waste.
[2]
Climbing access to tower shall be limited by
placing climbing apparatus no lower than 10 feet from the ground.
[3]
The clear area shall be no less than 10 feet.
[4]
The wind turbine shall conform to FAA safety
standards, as amended.
(4)
Condemnation.
(a)
Upon a finding by the Building Commissioner
that the WECF has been abandoned or has been left in disrepair or
has not been maintained in accordance with the approved maintenance
plan, the owner of said WECF shall be notified in writing by certified
mail that the WECF shall be brought up to standard. If required repairs
or maintenance are not accomplished within 45 days, the WECF shall
be deemed condemned and shall be removed from the site within 90 days
thereafter at the expense of the property owner. The aforementioned
periods of time may be extended at the request of the owner and at
the discretion of the Building Commission. "Removed from site" shall
mean:
[1]
Removal of the wind turbine and tower, all machinery,
equipment, equipment shelters, security barriers and all appurtenant
structures from the subject property;
[2]
Proper disposal of all solid or hazardous materials
and wastes from the site in accordance with local and state solid
waste disposal regulations;
[3]
Restoration of the location of the wind energy
conversion facility to its natural condition, except that any landscaping,
grading or below-grade foundation may remain in the after condition.
(b)
If an applicant fails to remove a wind energy
conversion facility in accordance with this section of this chapter,
the Town shall have the authority to enter the subject property and
physically remove the facility. The SPGA may require the applicant
to provide a form of surety (i.e., post a bond, letter of credit or
establish an escrow account or other) at the SPGA's election at the
time of construction to cover costs of the removal in the event the
Town must remove the facility. The amount of such surety shall be
equal to 150% of the cost of compliance with this section. The applicant
shall submit a fully inclusive estimate of the costs associated with
removal. The amount shall include a mechanism for a cost of living
adjustment every five years.
[Added 10-7-2010 by Order No. 2011-006; amended 8-17-2017 by Order No. 2018-04; 9-1-2022 by Order No. 2022-034]
A. Purpose.
(1)
This section promotes the creation of new large-scale, ground-mounted
solar photovoltaic installations and associated accessory uses by
providing standards for the placement, design, construction, operation,
monitoring, modification and removal of such installations that address
public safety, minimize impacts on scenic, natural and historic resources
and for providing adequate financial assurance for the eventual decommissioning
of such installations. This section ordinance is adopted pursuant
to the Commonwealth of Massachusetts Green Communities Act.
(2)
The provisions set forth in this section shall apply to the
construction, operation, and/or repair of large-scale, ground-mounted
solar photovoltaic installations and associated accessory uses.
B. Applicability. This section applies to large-scale (250 kW), ground-mounted
solar photovoltaic installations proposed to be constructed after
the effective date of this section. This section also pertains to
physical modifications that materially alter the type, configuration,
or size of these installations or related equipment.
C. District established. A Ground-Mounted Solar Photovoltaic Overlay District (GMSPOD) is hereby established, and shall be considered as superimposed over any other districts established by this chapter, and is shown as an overlay on the Official Zoning Map established pursuant to §
240-6, Zoning Map.
D. Definitions. These definitions shall apply to §
240-44.2 exclusively:
AS-OF-RIGHT SITING
The ground-mounted solar photovoltaic installation may proceed without the need for a special permit, variance, amendment, waiver or other local discretionary approval, except that a special permit shall be required when located in a underlying residential zoning district. As-of-right development is subject to Article
IX, Site Plan Review. As-of-right solar photovoltaic installations that are consistent with the Zoning Ordinance and applicable state and federal law can be reasonably regulated and approved by the Building Commissioner.
BATTERY ENERGY STORAGE MANAGEMENT SYSTEM
An electronic system that protects energy storage systems
from operating outside their safe operating parameters and disconnects
electrical power to the energy storage system or places it in a safe
condition if potentially hazardous temperatures or other conditions
are detected.
BATTERY ENERGY STORAGE SYSTEM
A battery energy storage system (BESS) is an electrochemical
device that charges (or collects energy) from the electrical grid
or an electricity generating facility, such as a large-scale ground-mounted
solar photovoltaic installation, and then discharges that energy at
a later time to provide electricity or other grid services when needed.
BATTERY(IES)
A single cell or a group of cells connected together electrically
in series, in parallel, or a combination of both, which can charge,
discharge, and store energy electrochemically. For the purposes of
this bylaw, batteries utilized in consumer products are excluded from
these requirements.
HAZARDOUS PRODUCT
Any chemical or combination of chemicals which, in any form,
is listed by trade name, chemical name, formula or otherwise as a
product which is a hazard to public drinking water supplies if concentrations
beyond a certain level are achieved therein. "Hazardous product" shall
also include any product for which there is any listing, declaration,
or announcement in any form issued by the United States Environmental
Agency, the Massachusetts Department of Environmental Protection,
or by any other government agency having direct or indirect jurisdiction
over public water supplies that such product is such a hazard or is
a product known as an "emerging contaminant" suspected as being capable
of being a carcinogen.
OFF-GRID SYSTEM
A solar photovoltaic installation where all energy generated
on the installation site is consumed on that site and does not send
any energy into the electrical grid for distribution.
RATED NAMEPLATE CAPACITY
The maximum rated output of electric power production of
the photovoltaic system in direct current (DC).
E. Site plan application and review.
(1)
Ground-mounted, large-scale solar photovoltaic installations with 250 kW or larger of rated nameplate capacity shall undergo site plan review pursuant to Article
IX, Site Plan Review, prior to construction, installation or modification as provided in this section. All plans and maps shall be prepared, stamped and signed by a professional engineer licensed to practice in Massachusetts. Any ground-mounted, large-scale solar photovoltaic installation with 250 kw or larger of rated nameplate capacity located in an underlining residential zoning district shall also be required to obtain a special permit from the Planning Board in accordance with Subsection
F. Batteries and battery energy storage systems are prohibited.
(2)
Required documents. In addition to the requirements of §
240-102, Contents of site plan, the project proponent shall provide the following documents:
(a)
A site plan showing:
[1] Existing conditions, including property lines and
physical features, abutting land uses and location of structures within
100 feet of the project site, topography and roads, characteristics
of vegetation (mature trees, shrubs, etc.), wetlands, vernal pools,
and floodplains. The existing plans should also identify designated
scenic roads and local or National Register historic districts, wellhead
protection areas, Natural Heritage & Endangered Species Program
(NHESP) Estimated and Priority Habitats, BioMap2 Critical Natural
Landscape and Core Habitat.
[2] Proposed changes to the landscape of the site,
grading, vegetation clearing and planting, exterior lighting, screening
vegetation or structures. The square footage of each disturbed area
shall be identified on a plan, and details of any site alteration,
including number and species of trees to be removed, shall be provided.
[3] Stormwater management plan including the following
standards:
[a] Selection of Massachusetts Department of Environmental
Protection Best Management Practices. To the maximum extent practicable,
low impact development vegetated best management practices shall be
used in accordance with the guidance for BMP selection and installation
found in the Massachusetts Stormwater Manual Handbook, latest edition.
[b] A stormwater management plan with the stamp and signature of a registered professional engineer (PE) who is licensed in the Commonwealth of Massachusetts, conforming to the conditions and standards of the Massachusetts Department of Environmental Protection's Stormwater Handbook, latest edition, is required and as required in Subsection
E(4)(i).
[c] To ensure proper containment and stabilization
of the site during the construction phase, a stormwater pollution
prevention plan to control construction-related impacts, including
erosion, sedimentation, and other pollutant sources during construction
and land disturbance activities, shall be developed and implemented.
Such plan shall be developed to document compliance with the Massachusetts
Stormwater Handbook, latest edition.
[d] A long-term stormwater operation and maintenance
plan shall be developed and implemented to ensure that stormwater
management systems function as designed. Such plan shall be developed
to document compliance with the Massachusetts Stormwater Handbook,
latest edition.
[4] Blueprints or drawings of the solar photovoltaic
installation signed by a professional engineer licensed to practice
in the Commonwealth of Massachusetts showing the proposed layout of
the system and any potential shading from nearby structures or vegetation,
the distance between the system and all property lines, existing on-site
buildings and structures, and the tallest finished height of the solar
array.
[5] One- or three-line electrical diagram detailing
the solar photovoltaic installation, associated components, and electrical
interconnection methods, with all National Electrical Code compliant
disconnects and overcurrent devices.
[6] Documentation of the major system components to
be used, including the PV panels, mounting system, and inverter(s).
[7] Name, address, and contact information for proposed
system installer.
[8] Name, address, phone number and signature of the
project proponent, as well as all co-proponents or property owners,
if any.
[9] The name, contact information and signature of
any agents representing the project proponent.
[10] Documentation of actual or prospective access
and control of the project; site control. The project proponent shall
submit documentation of actual or prospective access and control of
the project site sufficient to allow for construction and operation
of the proposed solar photovoltaic installation.
[11] An operation and maintenance plan. The project
proponent shall submit a plan for the operation and maintenance of
the ground-mounted solar photovoltaic installation, which shall include
specific measures for maintaining safe access to the installation,
a stormwater management plan, and general procedures for and frequency
of operational maintenance of the installation. The operation and
maintenance plan shall include measures for maintaining year-round
safe access for emergency vehicles, snow plowing, stormwater controls,
and general procedures, and a yearly schedule for the operation and
maintenance of the facilities including fencing, and maintenance of
landscaping.
[12] Zoning district designation for the parcel(s)
of land comprising the project site (submission of a copy of a Zoning
Map with the parcel(s) identified is suitable for this purpose).
[13] Description of financial surety that satisfies Subsection
E(5)(c) below.
[14] Utility notification. No ground-mounted solar
photovoltaic installation shall receive a building permit until an
executed interconnect agreement with the utility company operating
the electrical grid has been submitted to the Building Commissioner.
Off-grid systems are exempt from this requirement.
[15] Federal Aviation Administration (FAA) approval
of Solar Glare Study is required, if such a study is deemed necessary
by the FAA.
[16] The project proponent shall provide full disclosure
of all hazardous products proposed to be used at any time at a project
site shall be provided in writing to the Building Commissioner with
the site plan review application; no application for site plan review
shall be considered complete until such disclosure is submitted to
the Building Commissioner. No such hazardous materials shall be deployed
or used at any time at a project site without site plan approval.
Use, storage and containment of hazardous materials shall comply with
all federal, state, regional, and local codes and regulations, including
building, fire, and health codes. The applicant shall require all
manufacturers to attest and certify that all solar panels, solar sheets,
batteries and all other materials used on the proposed site shall
not contain per- and polyfluoroalkyl substances (PFAS).
(3)
Dimensional requirements. Ground-mounted solar photovoltaic
installations are subject to the front, side and rear yard setbacks
as set forth in the underlying zoning district(s), except that any
ground-mounted, large-scale solar photovoltaic installation with 250
kw or larger of rated nameplate capacity located in a residential
zoning district shall maintain a minimum 150-foot setback to residentially
developed lots and 100-foot setback from all other property lines
to contain noise.
(4)
Design standards.
(a)
Lighting. Lighting of solar photovoltaic installations shall
be consistent with local, state and federal law. Lighting of other
parts of the installation, such as accessory structures, shall be
limited to that required for safety and operational purposes, and
shall be reasonably shielded so not to trespass on to abutting properties.
(b)
Signage. Signs on large-scale, ground-mounted solar photovoltaic installations shall comply with Article
VII, Sign Regulations. A sign shall be required to identify the owner and provide a twenty-four-hour emergency contact phone number. Solar photovoltaic installations shall not be used for displaying any advertising.
(c)
Accessory structures. All structures accessory to ground-mounted
solar photovoltaic installations shall be subject to reasonable regulations
concerning the bulk and height of structures, lot area, setbacks,
open space, parking and building coverage requirements. To avoid adverse
visual impacts, all such accessory structures, including but not limited
to, equipment shelters, storage facilities, transformers, and substations,
shall be architecturally compatible with each other, multiple accessory
structures shall be clustered to the greatest extent feasible and
views of such structures to residential properties and roadways shall
be screened with landscaping.
(d)
Screening. The ground-mounted solar photovoltaic installation
shall be screened year-round from all adjacent residential lots. Natural
vegetation should be preserved to the extent possible; where existing
vegetation is insufficient to achieve year-round screening, additional
screening shall be provided including, but not limited to, planting
of dense vegetative screening, fencing, berms, use of natural ground
elevations, and/or land contouring so that the year round screening
exceeds that of the height of the proposed panels it is screening.
Plantings shall be of varying heights and shall be staggered to effectively
screen the installation from view. Plant material should be diverse
and native to Cape Cod or New England. Screening shall be completed
prior to connection of the installation. Plants shall be maintained
and replaced if unhealthy by the owner/operator of the installation
for the life of the installation. The Building Commissioner may alter
screening requirements if such screening would have a detrimental
impact on the health and safety of the neighborhood.
(e)
Utility connections. Reasonable efforts, as determined by site
plan review, shall be made to place all utility connections from the
solar photovoltaic installation underground, depending on appropriate
soil conditions, shape, and topography of the site and any requirements
of the utility provider. Electrical transformers for utility interconnections
may be above ground if required by the utility provider.
(f)
Battery storage siting - Batteries and battery energy storage
systems are prohibited.
(g)
Emergency services. The large-scale solar photovoltaic installation
owner or operator shall provide a copy of the project summary, electrical
schematic, and site plan to the local Fire Chief. Upon request the
owner or operator shall cooperate with local emergency services in
developing an emergency response plan as part of the operation and
maintenance plan stated above. All means of shutting down the solar
photovoltaic installation shall be clearly marked. The owner or operator
shall identify a responsible person for public inquiries throughout
the life of the installation.
(h)
Land clearing, soil erosion and habitat impacts. Clearing of
natural vegetation shall be limited to what is necessary for the construction,
operation and maintenance of the large-scale, ground-mounted solar
photovoltaic installation or otherwise prescribed by applicable laws,
regulations, and bylaws.
[1] Land clearing is prohibited within 800 feet from
the outer boundary of any Zone I protective radius around a public
water supply well or wellfield established by 310 CMR 22.
[2] Land clearing in excess of two contiguous acres
in connection with any single installation is prohibited.
[3] No such installation shall be segmented or broken into separate ownerships so as to avoid the prohibitions of Subsection
E(4)(h)[1] and
[2] above.
[4] Existing vegetative cover, root structures, flat
field or gravel areas, and topsoil shall be maintained to the maximum
extent practicable to prevent soil erosion.
[5] Ground surface areas beneath solar arrays and setback
areas, open areas within the solar array and between the array, and
vegetated buffers, including stormwater management areas shall be
seeded with a native seed mix, with a preference for native groundcovers
and deep-rooted native grasses suitable for site stabilization and
erosion control and that are low maintenance (requiring no fertilizers,
pesticides, or herbicides or irrigation except as may be necessary
for initial establishment, and minimal to no mowing) and/or pollinator-friendly
installations. Existing gravel areas that are well drained and stable
may remain.
(i)
Stormwater management. Effective stormwater and erosion controls
shall be maintained at all times. All stormwater control measures
shall either maintain or reduce preexisting runoff.
[1] As stated above, a stormwater management plan must
be submitted with the stamp and signature of a registered professional
engineer (PE) who is licensed in the Commonwealth of Massachusetts.
The stormwater management plan shall conform to the more stringent
of any conditions or standards of this subsection and the
Massachusetts Department of Environmental Protection's Stormwater
Handbook, as amended. The stormwater management plan shall
contain sufficient information for the Planning Board to evaluate
the environmental impact and effectiveness of the measures proposed
for retaining stormwater on the parcel site and shall fully describe
the project in drawings, narrative, and calculations. It shall include:
[a] The site's existing and proposed topography;
[b] All areas of the site designated as open space;
[c] A description and delineation of existing stormwater
conveyances, impoundments, environmental resources on or adjacent
to the site into which stormwater flows;
[d] A delineation of 100-year floodplains, if applicable;
[e] Estimated seasonal high groundwater elevation in
areas to be used for stormwater retention, detention, or infiltration;
[f] Existing and proposed vegetation and ground surfaces
with runoff coefficients for each;
[g] Calculations for the two-, ten-, twenty-five- and
100-year, as outlined in the Massachusetts Stormwater Handbook, latest
edition. Pipe sizes, depth of flow, capacities and velocities shall
be included;
[h] A drainage area map showing pre- and post-construction
watershed boundaries, drainage area and stormwater flow paths, including
municipal drainage system flows, at a scale that enables verification
of supporting calculations;
[i] A recharge analysis that calculates pre- and post-construction
annual groundwater recharge rates on the parcel;
[j] A description and drawings of all components of
the proposed stormwater management system;
[k] Hydrologic and hydraulic design calculations for
the pre-development and post-development conditions for the design
storms specified in the Massachusetts Stormwater Handbook;
[l] Soils information from test pits performed at the
location of proposed stormwater management facilities, including soil
descriptions, depth to seasonal high groundwater and depth to bedrock.
Soils information will be based on site test pits logged by a Massachusetts
Certified Soil Evaluator;
[m] Any construction phasing proposed to mitigate stormwater
impacts.
[2] All stormwater infrastructure shall be owned and
maintained by the owner of the installation and shall be located on
the same parcel as the solar installation.
[3] Stormwater management systems shall be designed
so that post-development peak discharge rates and volumes, for the
two-, ten-, twenty-five-, and 100-year storm frequency, do not exceed
pre-development peak discharge rates and volumes. To the maximum extent
practicable, low impact development vegetated best management practices
shall be used in accordance with the guidance for BMP selection and
installation found in the Massachusetts Stormwater Handbook, latest
edition.
[4] All pipes, catch basins and other materials utilized
in the stormwater facilities shall be approved by the Town of Barnstable
Department of Public Works, or designee.
[5] To ensure proper containment and stabilization
of the site during the construction phase, a stormwater pollution
prevention plan, with the stamp and signature of a registered professional
engineer (PE) who is licensed in the Commonwealth of Massachusetts,
to control construction-related impacts, including erosion, sedimentation,
and other pollutant sources during construction and land disturbance
activities, shall be submitted, approved by the Town of Barnstable
and implemented. Such plan shall be developed to document compliance
with the Massachusetts Stormwater Handbook, latest edition.
[6] A long-term stormwater operation and maintenance
plan with the stamp and signature of a registered professional engineer
(PE) who is licensed in the Commonwealth of Massachusetts, shall be
developed and implemented to ensure that stormwater management systems
function as designed. Such plan shall be developed to document compliance
with the Massachusetts Stormwater Handbook.
[a] The long-term stormwater operation and maintenance
plan shall at a minimum include:
[i]
Stormwater management system(s) owners;
[ii] The party or parties responsible for operation
and maintenance of all aspects of the stormwater management system;
[iii] The routine and non-routine maintenance tasks
to be undertaken after construction is complete and a schedule for
implementing those tasks;
[iv] A plan that is drawn to scale and shows the location
of all stormwater control measures;
[v] A schedule for routine inspections as well as a
description of storms that would trigger immediate inspections following
the storm;
[vi] An inspection and maintenance log form;
[vii] An estimated stormwater operations and maintenance
budget;
[viii] Permission from the operator to allow agents
of the Town of Barnstable to enter and inspect the premises to evaluate
and ensure that the responsible party complies with the long-term
stormwater operation and maintenance plan requirements for each measure.
[b] During times of construction and post-construction
where stormwater generated from the project area may inadvertently
enter the public way, the owner shall be responsible for direct costs
incurred by the town, including but not limited to stormwater related
clean up, sanding, salting, street sweeping or other necessary management
when required for the protection of public health and safety.
(5)
Abandonment or decommissioning of large-scale, ground-mounted
photovoltaic installations.
(a)
Removal requirements. Any large-scale, ground-mounted solar
photovoltaic installation which has reached the end of its useful
life or has been abandoned consistent with this section shall be removed.
The owner or operator shall physically remove the installation no
more than 150 days after the date of discontinued operations. The
owner or operator shall notify the Building Commissioner by certified
mail of the proposed date of discontinued operations and plans for
removal. Decommissioning shall consist of:
[1] Physical removal of all large-scale, ground-mounted
solar photovoltaic installations, structures, equipment, security
barriers and transmission lines from the site.
[2] Disposal of all solid and hazardous waste in accordance
with local, state, and federal waste disposal regulations.
[3] Stabilization or revegetation of the site as necessary
to minimize erosion. The Building Commissioner may allow the owner
or operator to leave landscaping or designated below-grade foundations
in order to minimize erosion and disruption to vegetation.
(b)
Abandonment. Absent notice of a proposed date of decommissioning
or written notice of extenuating circumstances, the solar photovoltaic
installation shall be considered abandoned when it fails to operate
at less than 25% of its nameplate capacity for more than one year
without the written consent of the Planning Board. If the owner or
operator of the large-scale, ground-mounted solar photovoltaic installation
fails to remove the installation in accordance with the requirements
of this section within 150 days of abandonment or the proposed date
of decommissioning, the Town may enter the property and physically
remove the installation.
(c)
Financial surety. Proponents of large-scale, ground-mounted
solar photovoltaic projects shall provide a form of surety, either
through escrow account, bond or otherwise, to cover the cost of removal
and disposal in the event the Town must remove the installation and
remediate the landscape, in an amount and in a form acceptable to
the Town Attorney but in no event to exceed more than 125% of the
cost of removal and compliance with the additional requirements set
forth herein, as determined by the project proponent. Such surety
will not be required for municipally or state-owned facilities. The
project proponent shall submit a fully inclusive estimate of the costs
associated with removal, prepared by a qualified engineer. The amount
shall include a mechanism for pro rating removal costs as they may
be affected by inflation or changes to disposal regulations. And shall
not include the value of scrap materials that may be realized by a
private enterprise.
F. Special permit provisions. A special permit shall be granted by the
Planning Board if the Planning Board determines the following criteria
have been met.
(1)
Site Plan Approval in accordance with Subsection
E; and
(2)
Adequate measures to contain and suppress noise and sound as
deemed appropriate by the Planning Board, including, but not limited
to, minimum 150-foot setback to residentially developed lots, a minimum
of 175-foot setback where residential dwelling unit exists within
50 feet of the property line shared by the subject property, and 100-foot
setback from all other property lines to the ground-mounted solar
photovoltaic installation. The above prescribed setbacks shall be
undisturbed in perpetuity. Undisturbed setback shall include the following,
unless conditioned by the Planning Board: no removal or excavation
of soil with in the setback, no dumping or discharging of material
with in the setback, no motorized vehicles of any kind within the
setback, no ongoing maintenance by anything other than an individual(s)
removing debris by hand, no other change in conditions to the setback
unless reviewed and approved by the permit granting authority.
(3)
Screening. The ground-mounted solar photovoltaic installation
shall be screened year-round from all adjacent residential lots. Natural
vegetation should be preserved to the extent possible; where existing
vegetation is insufficient to achieve year-round screening, additional
screening shall be provided including, but not limited to, planting
of dense vegetative screening, fencing, berms, use of natural ground
elevations, and/or land contouring so that the year round screening
exceeds that of the height of the proposed panels it is screening.
Plantings shall be of varying heights and shall be staggered to effectively
screen the installation from view. Plant material should be diverse
and native to Cape Cod or New England. Screening shall be completed
prior to connection of the installation. Compliance with screening
requirements that are conditions of a special permit shall be enforceable
to the fullest extent permitted by law. Plants shall be maintained
and replaced if unhealthy by the owner/operator of the installation
for the life of the installation.
(4)
Federal Aviation Administration (FAA) approval of Solar Glare
Study, if such a study is deemed necessary by the FAA.
(5)
Cape Cod Commission approval as required and evidence to the
Planning Board of said approval.
(6)
Full disclosure of all hazardous products, as defined by the
Massachusetts Department of Environmental Protection pursuant to 310
CMR 30.000, proposed to be used at any time at a project site shall
be provided in writing to the Planning Board with the special permit
application; no application for a special permit shall be considered
complete until such disclosure is submitted to the Planning Board.
No such hazardous materials shall be deployed or used at any time
at a project site without approval of the special permit by the Planning
Board.
(7)
Use, storage and containment of hazardous materials shall comply
with all federal, state, regional, and local codes and regulations,
including building, fire, and health codes.
(a)
Any equipment which includes hazardous materials shall provide
design containment equal to a minimum of 110% of the hazardous material
volume contained in the associated equipment plus an additional volume
to include the 100-year storm event over a twenty-four-hour period.
(b)
Hazardous materials stored, used, or generated on site shall
not exceed the amount for a Very Small Quantity Generator of Hazardous
Waste as defined by the Massachusetts Department of Environmental
Protection pursuant to 310 CMR 30.000.
(8)
Expanded operation and maintenance plan. The project proponent
shall submit a plan for the operation and maintenance of the ground-mounted
solar photovoltaic installation, which shall include specific measures
for maintaining safe access to the installation, a stormwater management
plan,, and general procedures for and frequency of operational maintenance
of the installation. The operation and maintenance plan shall include
measures for maintaining year-round safe access for emergency vehicles,
snow plowing, stormwater controls, and general procedures, and a yearly
schedule for the operation and maintenance of the facilities including
fencing, and maintenance of landscaping. The operation and maintenance
plan shall include details on hazardous material containment maintenance
and monitoring as well as the following:
(a)
Commissioning plan. Such plan shall document and verify that
the system and its associated controls and safety systems are in proper
working condition in accordance with Massachusetts Building Code and
Massachusetts Fire Code (herein known as Uniform Code). Where commissioning
is required by the Uniform Code, a corrective action plan shall be
developed for any open or continuing issues that are allowed to be
continued after commissioning. A report describing the results of
the system commissioning shall be provided to Building Commissioner
prior to final inspection and approval and maintained at an approved
on-site location.
(b)
Fire safety compliance plan. Such document shall document and
verify that the system and its associated controls and safety systems
are in compliance with the Uniform Code.
(c)
Operation and maintenance manual. Such document shall describe
continuing solar maintenance and property upkeep, as well as design,
construction, installation, testing and commissioning information
and shall meet all requirements set forth in the Uniform Code.
(d)
Erosion and sediment control and stormwater management plans
prepared as detailed further above.
(e)
Emergency operations plan. A copy of the approved emergency
operations plan shall be given to the system owner, the local fire
department, and local fire code official. A permanent copy shall also
be placed in an approved location to be accessible to facility personnel,
fire code officials, and emergency responders. The emergency operations
plan shall include the following information:
[1] Procedures for safe shutdown, de-energizing, or
isolation of equipment and systems under emergency conditions to reduce
the risk of fire, electric shock, and personal injuries, and for safe
start-up following cessation of emergency conditions.
[2] Procedures for inspection and testing of associated
alarms, interlocks, and controls.
[3] Procedures to be followed in response to notifications,
when provided, that could signify potentially dangerous conditions,
including shutting down equipment, summoning service and repair personnel,
and providing agreed upon notification to fire department personnel
for potentially hazardous conditions in the event of a system failure.
[4] Emergency procedures to be followed in case of
fire, explosion, release of liquids or vapors, damage to critical
moving parts, or other potentially dangerous conditions. Procedures
can include sounding the alarm, notifying the fire department, evacuating
personnel, de-energizing equipment, and controlling and extinguishing
the fire.
[5] Procedures for dealing with equipment damaged in
a fire or other emergency event, including maintaining contact information
for personnel qualified to safely remove damaged equipment from the
facility.
[6] Other procedures as determined necessary by the
Planning Board to provide for the safety of occupants, neighboring
properties, and emergency responders.
[7] Procedures and schedules for conducting drills
of these procedures and for training local first responders on the
contents of the plan and appropriate response procedures.
(9)
Compliance with any other criteria found by the Planning Board
as necessary to protect the public health, safety or welfare, including,
but not limited to, the revocation of any prior permits and previous
uses that benefit the project site.
[Amended 2-22-1996 by Order No. 95-194]
A mobile home may be stored in a garage or other
accessory building or on the rear half of a lot owned or occupied
by the owner of the mobile home. The location of the mobile home shall
comply with the yard requirements of the zoning district in which
it is located.
[Added 8-17-1995 by Order No. 95-195; amended 9-15-2022 by Order No. 2023-011]
A. Intent. It is the intent of this section to allow the residents of
the Town of Barnstable to operate a home occupation within a dwelling,
subject to the provisions of this section, provided that the activity
shall not be discernible from outside the dwelling except as provided
herein; there shall be no increase in noise or odor; no visible alteration
to the premises which would suggest anything other than a residential
use; no increase in traffic above normal residential volumes; and
no increase in air or groundwater pollution.
B. A home occupation shall be permitted in all zoning districts as of
right, subject to the following conditions:
(1) The activity is conducted by a permanent resident of a dwelling unit,
located within that dwelling unit, or within an accessory structure
located on the same lot, subject to the limitations herein.
(2) Such use is clearly incidental to and subordinate to the use of the
premises or occupants for residential purposes.
(3) Such use occupies no more than 20% of the dwelling unit, including office and storage areas combined, unless relief is granted by special permit as provided by Subsection
C(1)(a) below. Such use within an accessory structure shall occupy no more than 200 square feet unless relief is granted by special permit as provided by Subsection
C(1)(f) below.
(4) There are no external alterations to the dwelling which are not customary
in residential buildings, and there is no outside evidence of such
use except as provided herein.
(5) The use is not objectionable or detrimental to the neighborhood and
its residential character
(6) Traffic generated shall not be more disruptive to the neighborhood
than traffic normally resulting from a residential use, considering
volume, hours, vehicle types and other traffic characteristics.
(7) The use shall not involve the production of offensive noise, vibration,
smoke, dust or other particulate matter, odors, electrical disturbance,
heat, glare, humidity or other objectionable effects.
(8) There is no storage or use of toxic or hazardous materials, or flammable
or explosive materials, in excess of normal household quantities.
(9) Any need for parking generated by such use shall be met on the same
lot containing the customary home occupation, and not within the front
yard.
(10)
There is no exterior storage or display of materials or equipment.
(11)
There are no commercial vehicles related to the home occupation,
other than one van or one pickup truck not to exceed one-ton capacity,
and one trailer not to exceed 20 feet in length and not to exceed
four tires, parked on the same lot containing the home occupation.
This section does not apply to residents of a dwelling who park take-home
work vehicles that are not registered to them and that do not have
a home occupation on-premises.
(12)
No sign shall be displayed indicating the home occupation.
(13)
If the home occupation is listed or advertised as a business,
the street address shall not be included.
(14)
No more than one nonresident employee may be employed on the premises of a home occupation, except pursuant to a special permit in accordance with Subsection
C(1)(c) below.
(15)
Home occupations shall not include such uses similar to, and
including the following:
(a)
Barber- and beauty shops.
(b)
Commercial stables or kennels.
(c)
Offices which provide public access, provided that offices that
are used only for administrative purposes shall be permitted.
(d)
The sale of retail or wholesale merchandise from the premises, with the exception of online or mail order sales. The storage of merchandise is included in the total area limits of the home occupation subject to Subsection
B(3) above.
(e)
The sale of antique or secondhand goods, with the exception
of online or mail order sales. The storage of merchandise is included
in the total area limits of the home occupation subject to Subsection B(3)
above.
(f)
Service or repair of vehicles, and gasoline- or diesel-powered
machinery.
(g)
Contractor's storage yards. Contractor's storage yard includes
the keeping of materials in trade outdoors, such as: lumber, granite,
windows and other such bulk materials, including but not limited to
stone, gravel, mulch, firewood, etc., beyond the limits of personal
use.
(i)
The manufacture of goods using heavy machinery.
(j)
Medical or dental practice.
(k)
Fortune-telling or palm reading.
C. Home occupation by special permit. The Zoning Board of Appeals may allow by special permit, subject to the provisions of §
240-125C herein, a home occupation subject to the specific standards for such conditional uses as required in this section:
(1) Home occupations shall comply with all of the requirements of Subsection
B(1) through
(11) above, except the Zoning Board of Appeals may allow by special permit the following waivers from the requirements of Subsection
B above.
(a)
The Zoning Board of Appeals may allow an activity to exceed
20% of a dwelling's gross floor area by special permit but at no time
shall allow a home occupation to occupy more than 40% of a dwelling's
gross floor area.
(b)
The Zoning Board of Appeals may allow one nonilluminated wall
sign not exceeding two square feet in area by special permit.
(c)
The Zoning Board of Appeals may allow more than one nonresident
employee to be employed on the premises of a home occupation but at
no time shall a home occupation allow for greater than two nonresidents
of the household to be employed on the premises at the same time.
(d)
The Zoning Board of Appeals may allow the parking of one work
vehicle capable of being operated under a Massachusetts Class B license
related to the home occupation by special permit. All parking generated
by the use by special permit shall be accommodated off-street, screened
by a physical or natural barrier so not to be seen from a public way.
(e)
Home occupations shall not include the uses listed in Subsection
B(15) above. However, The Zoning Board of Appeals may allow activities that may not be customary within a dwelling, provided that the activity meets the intent as specified herein.
(f)
The Zoning Board of Appeals may allow a home occupation use
to be located within an accessory structure which may occupy greater
than 200 square feet of the accessory structure, on the same lot as
the primary residential dwelling unit occupied by the applicant. Such
use within an accessory structure may occupy greater than 200 square
feet by special permit but at no time shall the use within the accessory
structure occupy an area within an accessory structure that is greater
than 25% of the square footage of the primary residential dwelling
unit occupied by the applicant.
(2) Home occupations requiring a special permit shall require Article
IX, Site Plan Review.
(3) Any special permit granted by the Zoning Board of Appeals shall be
issued solely to the applicant at his or her residence, and shall
not be transferable to another person, or to another location.
[Added 4-27-2000]
The Zoning Board of Appeals may grant special
permits to allow for the use of structures as shared housing to provide
care and shelter for persons with special needs due to age or disability.
Said special permits shall be issued only with respect to owner-occupied
single-family residences to be occupied by not more than six persons
not less than 65 years of age or in approved instances persons of
lesser age in need of special care, in addition to the family residents
in the dwelling, and shall be conditioned upon the maintenance of
proper licensed status as a shared residence under the laws of the
commonwealth, and upon such other requirements as the Zoning Board
of Appeals deems appropriate with respect to safety, parking, screening
and other amenities designed to mitigate the impact of the use upon
the neighborhood, and may be conditioned as to time and ownership
in the discretion of the Board.
[Added 11-18-2004 by Order No. 2005-026; amended 10-7-2010 by Order No. 2011-010; 3-1-2018 by Order No. 2018-053]
The intent of this section is to allow within all residential
zoning districts one temporary family apartment occupied only by the
property owner or a member(s) of the property owner's family as accessory
to a single-family residence to provide families the ability to live
together as a family unit, but not to allow for a separate dwelling
for rental purposes to non-family members. A family apartment may
be permitted, provided that there is compliance with all the criteria,
conditions and procedural requirements herein.
A. As of right. A family apartment shall be allowed as of right, provided that it complies with Subsection
C below and satisfies the following criteria:
(1)
The apartment unit shall not exceed 50% of the square footage
of the existing single-family dwelling and shall be limited to no
more than two bedrooms.
(2)
Occupancy of the apartment shall not exceed two family members;
occupancy limitations shall not apply to children ages 18 and under.
(3)
The family apartment shall be located within a single-family
dwelling or connected to the single-family dwelling in such a manner
as to allow for internal access between the units. The apartment must
comply with all applicable zoning requirements for the zoning district
in which it is located.
B. By special permit. The Zoning Board of Appeals may allow by special permit, subject to the provisions of §
240-125C herein, the following waivers from the requirements of Subsection
A above:
(1)
A family apartment unit greater than 50% of the square footage
of the dwelling.
(2)
A family apartment unit with more than two bedrooms.
(3)
Occupancy of a family apartment unit by greater than two adult
family members.
(4)
A family apartment unit within a detached structure, with a
finding that the single-family nature of the property and of the accessory
nature of the detached structure are preserved.
C. Conditions and procedural requirements. Prior to the creation of
a family apartment, the owner of the property shall make application
for a building permit with the Building Commissioner providing any
and all information deemed necessary to assure compliance with this
section, including, but not limited to, scaled plans of any proposed
remodeling or addition to accommodate the apartment, signed and recorded
affidavits reciting the names and family relationship among the parties,
and a signed family apartment accessory use restriction document.
(1)
Certificate of occupancy. Prior to occupancy of the family apartment,
a certificate of occupancy shall be obtained from the Building Commissioner.
No certificate of occupancy shall be issued until the Building Commissioner
has made a final inspection of the apartment unit and the single-family
dwelling for regulatory compliance and a copy of the family apartment
accessory use restriction document recorded at the Barnstable Registry
of Deeds is submitted to the Building Division.
(2)
Annual affidavit. Annually thereafter, a family apartment affidavit,
reciting the names and family relationship among the parties and attesting
that there shall be no rental of the principal dwelling or family
apartment unit to any non-family members, shall be signed and submitted
to the Building Division.
(3)
At no time shall the single-family dwelling or the family apartment
be sublet or subleased by either the owner or family member(s). The
single-family dwelling and family apartment shall only be occupied
by those persons listed on the recorded affidavit, which affidavit
shall be amended when a change in the family member occupying either
unit occurs.
(4)
When the family apartment is vacated, or upon noncompliance
with any condition or representation made, including but not limited
to occupancy or ownership, the use as an apartment shall be terminated.
All necessary permit(s) must be obtained to remove either the cooking
or bathing facilities (tub or shower) from the family apartment, and
the water and gas service of the utilities removed, capped and placed
behind a finished wall surface; or a building permit must be obtained
to incorporate the floor plan of the apartment unit back into the
principal structure.
[Added 7-15-2021 by Order No. 2021-174]
A. Purpose and intent. The intent of permitting accessory dwelling units
(ADUs) is to:
(1)
Increase the number of dwelling units available for year-round
rental in Town while remaining within our current wastewater capacity
limitations;
(2)
Adapt single-family residential properties so they are supportive
of residents at a variety of stages in their life cycle;
(3)
Encourage greater diversity and support of all populations with
particular attention to young adults and senior citizens; and
(4)
Encourage a more economic and efficient use of the Town's housing
supply while maintaining the appearance and character of the Town's
single-family neighborhoods; and
(5)
Provide homeowners with a means of obtaining rental income to
defray housing costs.
B. Procedural requirements.
(1)
An ADU that conforms to the requirements contained herein shall be permitted as an accessory use to a lawful single-family dwelling use, except that no ADU shall be permitted on a lot at the same time either an affordable accessory apartment exists on that lot pursuant to Chapter
9, Article
II, §§
9-12 through
9-16, of the General Ordinances of the Code of the Town of Barnstable or as a family apartment exists on that lot pursuant to §
240-47.1.
(2)
Prior to issuance of a building permit for an ADU, site plans,
floor plans and elevations shall be submitted showing the proposed
interior and exterior changes to existing buildings or new buildings
and improvements on a lot associated with a proposed ADU.
(3)
The construction of any accessory dwelling unit must be in conformity
with the federal, state, and local laws and regulations, including
all historic, and Old King's Highway requirements if applicable.
C. Use and dimensional requirements. The Building Commissioner may issue
a building permit authorizing the installation and use of an accessory
dwelling unit within a lawful existing or new single-family dwelling
to which the ADU is accessory, or in a new or existing detached building
accessory to and on the same lot as the principal dwelling subject
to the following:
(1)
No more than one ADU may be created per lot. This provision
is not subject to variance.
(2)
If the primary entrance of an ADU is not proposed to be shared
with that of the principal dwelling, such entrance shall be less visible
from the street view of the principal dwelling than the main entrance
of the principal dwelling.
(3)
An ADU shall be designed so that, to the maximum extent practical,
the appearance of the property on which it is to be located remains
that of a single-family residential property. Any addition or new
construction shall be consistent in design with the principal single-family
dwelling, considering the following: architectural details, roof design,
building spacing and orientation, door and window location, and building
materials. Any person aggrieved by the determination of a Town official
with respect to a determination under this subsection may appeal said
determination to the Zoning Board of Appeals.
(4)
The ADU shall contain no more than two bedrooms. ADUs, in accordance
with the definition, shall have a maximum habitable floor area that
is not larger than 1/2 of the habitable floor area of the principal
single-family dwelling unit (exclusive of floor area that converted
to the ADU), or 900 square feet, whichever is smaller. ADUs with more
than two bedrooms and/or a maximum habitable floor area greater than
900 square feet may be permitted by special permit from the Zoning
Board of Appeals. Garages, unfinished attics and basements, common
entries, porches and decks shall not be included in the floor area
calculations.
[Amended 7-15-2021 by Order No. 2021-175]
(5)
Occupancy of the ADU shall not exceed two persons; occupancy
limitations shall not apply to children ages 18 and under. Occupancy
of an ADU by more than two persons over the age of 18 may be permitted
by special permit from the Zoning Board of Appeals.
(6)
Once an ADU has been added to a single-family dwelling or lot,
the accessory dwelling unit shall not be enlarged beyond the square
footage allowed by this section.
(7)
All parking for the ADU shall be off street.
(8)
The Board of Health must have documented to the Building Commissioner
that sewage disposal will be satisfactorily provided for in accordance
with the provisions of Title 5 and Board of Health regulations, including
provisions for an appropriate reserve area on the site. The principal
dwelling unit and accessory dwelling unit shall meet all wastewater
requirements for the combined number of bedrooms/wastewater flow on
the lot. If the property is served by municipal sewer, the Department
of Public Works shall certify adequate capacity is available to serve
the additional unit.
(9)
The rights and requirements of this section hereby transfer
upon the sale of a property containing an ADU built under the provisions
of this section.
(10)
An ADU and the principal dwelling to which it is accessory may
be rented only in accordance with the terms of this section.
(11)
An ADU shall be used only as a rental, except that the owner
of the property may reside in the ADU while renting the principal
dwelling. The rental period for an ADU and for a principal dwelling
shall not be shorter than 12 consecutive months. Either the principal
dwelling or ADU, but not both, may be rented at any given time.
(12)
Any commercial use, with the exception of permitted home occupations,
shall not be allowed on a property on which there is an ADU.