A. 
Tables.
[Amended 5-2-2022 ATM by Art. 10]
Table 50 (Part 1)
Minimum Requirements for Construction within Districts Zoned Single-Family A, Single-Family B, Single-Family C, Multi-Family A, Multi-Family B
NOTE: Parenthetical letters refer to footnotes in Subsection B.
SF-A
SF-B
SF-C
MF-A
MF-B
Minimum Lot Dimensions
Area in square feet
6,500
12,000
20,000
10,000
10,000
Frontage in linear feet
60
75
90
100
100
Minimum Yard Dimensions
Front in linear feet
25(a)(c)(k)
25(a)(c)(k)
25(a)(c)(k)
25(a)(c)(k)(r)
25(a)(c)(k)(r)
Side in linear feet
10(b)
10(b)
10(b)
15(b)(r)
15(b)(r)
Rear in linear feet
20(b)
20(b)
20(b)
25(b)(j)(r)
25(b)(j)(r)
Maximum Height of Buildings
Number of Stories
3
3
3
N/A
N/A
Height in linear feet
35(f)(y)(a.1)
35(f)(y)(a.1)
35(f)(y)(a.1)
40(e)(f)(i)(y)(a.1)
50(e)(f)(i)(y)(a.1)
Minimum Lot Width in Linear Feet
(c)
(c)
(c)
(c)
(c)
Maximum Lot Coverage in Percentage
30(d)(g)(t)(z)
30(d)(g)(t)(z)
30(d)(g)(t)(z)
30(d)(g)
50(d)(g)
Accessory Structures
Minimum front yard in linear feet
25
25
25
25
25
Minimum side yard in linear feet
6
6
6
6
6
Minimum rear yard in linear feet
6(j)
6(j)
6(j)
6(j)
6(j)
Maximum height in linear feet
14
14
14
14
14
Maximum Number of Dwelling Units per Lot
1
1
1
See Table 51
See Table 51
Maximum Number of Buildings per Lot
1
1
1
2(h)
2(h)
Maximum Number of Dwelling Units per Acre
N/A
N/A
N/A
8.7(r)(m)
17.4(r)(m)
Table 50 (Part 2)
Minimum Requirements for Construction within Districts Zoned Business, Commercial Recreation A, Commercial Recreation B, Commercial Recreation C, and Public Open Space
NOTE: Parenthetical letters refer to footnotes in Subsection B.
[Amended 5-22-2017 ATM by Art. 22]
Bus
CR-A
CR-B
CR-C
POS
Minimum Lot Dimensions
Area in square feet
None
10,000
10,000
10,000
(q)
Frontage in linear feet
None
100
100
100
(q)
Minimum Yard Dimensions
Front in linear feet
10(a)(c)(k)(r)(u)
25(a)(c)(k)(r)
25(a)(c)(k)(r)
25(a)(c)(k)(r)
(q)
Side in linear feet
N/A(w)
10(b)(r)(w)
10(b)(r)(w)
10(b)(r)(w)
(q)
Rear in linear feet
N/A(w)
20(b)(r)(w)
20(b)(r)(w)
20(b)(r)(w)
(q)
Maximum Height of Buildings
Number of Stories
N/A
N/A
N/A
N/A
(q)
Height in linear feet
40(e)(c)(f)(i)(y)(a.1)
40(e)(f)(i)(o)(r)(y)(a.1)
40(e)(f)(i)(r)(y)(a.1)
40(e)(f)(i)(o)(r)(y)(a.1)
20(a.1)
Minimum Lot Width in Linear Feet
N/A
N/A
N/A
N/A
(q)
Maximum Lot Coverage in Percentage
N/A
30(d)(g)
30(d)(g)
30(d)(g)
10
Accessory Structures
Minimum front yard in linear feet
25
25
25
25
(q)
Minimum side yard in linear feet
6
6
6
6
(q)
Minimum rear yard in linear feet
6(j)
6(j)
6(j)
6(j)
(q)
Maximum height in linear feet
14
14
14
14
14
Maximum Number of Dwelling Units per Lot
N/A
See Table 51
See Table 51
See Table 51
(q)
Maximum Number of Buildings per Lot
1
2(h)
2(h)
2(h)
(q)
Maximum Number of Dwelling Units per Acre
15(m)
15(m)(n)(r)
18(m)(n)(r)
15(m)(n)(r)
(q)
B. 
Footnotes to Table 50 in Subsection A.
(a) 
Front yard setback shall be measured from the right-of-way line where a plan of the way is on file with the Registry of Deeds or in Town Records. In the absence of such plan, the front yard setback shall be measured from the nearest side line on the traveled way to the outer front wall of the building. The Building Commissioner may waive this requirement and establish a front yard setback to conform to buildings on the same side of the street within 200 linear feet of the property.
[Amended 5-22-2017 ATM by Art. 22]
(a.1) 
The special permit granting authority may in its discretion issue a special permit allowing new or existing buildings located in a Special Flood Hazard Area, as defined by the latest edition of 780 CMR, to be elevated beyond the prescribed height limit to flood proof said building by meeting or exceeding the flood elevation requirements of said CMR. Building cannot exceed the elevation required to comply with 780 CMR by more than four feet.
[Amended 5-22-2017 ATM by Art. 22]
(b) 
Side yards and rear yards shall be measured from the furthermost projection of the main structure. However, chimneys, cantilevered windows, eaves, and canopies may project no more than 30 inches into the prescribed setbacks. Entry and exit platforms not exceeding 30 square feet (and accompanying stairs) are permitted in the side or rear setback as a matter of right.
[Amended 5-2-2016 ATM by Art. 18]
(b.1) 
In FEMA Flood Zones VE, AO, and AE, an attached covered structure to house utilities may be constructed in the side or rear setback of an existing residential building for the purpose of housing utilities that are to be elevated above the base flood elevation as shown on the FEMA Flood Map for that building's location. Utilities are defined as and are limited to heating units, water heater and hot water storage, electrical panel, washer and dryer. The footprint of such structure shall not exceed 50 square feet and it shall not encroach into the side or rear setback more than 50% of the required setback of the structure. Such structure shall be allowed when the Building Commissioner or Zoning Enforcement Officer determines that no other practical space is available in the residence to house the elevated utilities.
[Added 5-2-2016 ATM by Art. 18]
(c) 
Width of lot at front yard setback line (building line) shall be at least the same as the minimum frontage requirements.
(d) 
Includes accessory buildings.
(e) 
Where not otherwise specified.
(f) 
Appurtenances to buildings, such as chimneys, ventilators, towers, spires, equipment and stairwell and/or elevator penthouses, and ornamental features may extend up to 10 linear feet above the height of the building. Such appurtenances shall not be used for occupancy except for repairs and maintenance. (Amended, Annual Town Meeting, May 13, 2002)
(g) 
Roads, driveways, parking lots and other paved surfaces shall not be considered in computing maximum lot coverage.
(h) 
Two Multi-family buildings may be built on one lot provided that the buildings conform in all other respects to the Zoning Bylaw, and only if the Planning Board, under the Site Plan Review process, determines that two buildings would be less detrimental to the neighborhood by preventing the so-called "wall" effect.
(i) 
Maximum height limitations may be exceeded by Special Permit issued by the Zoning Board of Appeals allowing a variation of roof heights of the structure or structures. The average height of the various roofs shall not exceed the maximum height allowed in the particular district. In no case shall the highest roof exceed the maximum height allowed in that district by more than 12 vertical feet.
(j) 
In the event that additional yards are required to assure access to the rear of the lot or any adjacent lots, such yards shall be provided with a minimum width of 12 linear feet.
(k) 
Fixed, retractable, or removable awnings and canopies for the protection of the public from the elements may be erected or installed within the front setback areas. On business and commercial buildings located in a multi-family residential district, the awnings and canopies shall be limited to a six foot extension across the full face of the building. On multi-family residential buildings, the awnings and canopies shall be limited to the area of the front entry walkway extending in a straight line to the building and not exceeding six linear feet in width.
(l) 
Density figures shall be allowed as a ratio in proportion to the actual area of the lot in question.
(m) 
Areas such as wetlands, steep slopes over 45% grade, and land below the high water mark shall not be counted in figuring the number of permissible units for the purpose of calculating the minimum area in square feet per dwelling unit.
(n) 
Open space for active recreation totaling not less than 12 square feet for each dwelling unit shall be provided on those parcels used for apartments.
(o) 
Seventy feet with Flexible Plan Development (FPD), per § 410-4.3 of this zoning bylaw.
(p) 
(Deleted April 10, 1995 Town Meeting, Article 21)
(q) 
To be determined by the Board of Appeals on a case-by-case basis.
(r) 
The requirements of Table 51 apply to all multi-family structures erected in this district.
(s) 
Does not apply to Business Uses.
(t) 
In-ground and above-ground swimming pools and unroofed decks and patios not exceeding five feet in height from average finish grade (not including guard rails), shall not count toward said lot coverage.
(u) 
The Board of Appeals may as an exception by Special Permit waive this requirement and establish a frontage to conform to other buildings. Existing buildings shall not attain non-conforming status because of this setback requirement.
(v) 
The same minimum yard dimension as for single-family dwellings Table 50, Subsection A, shall be required for any portion of a lot adjacent to a Residence District.
(w) 
Areas abutting a residential area shall provide screening along the common property line in the form of an opaque fence, wall, or evergreen shrubbery at least six feet in height.
(x) 
If a lot in a Mixed Use Residential District is used for both residential and non-residential purposes, the entire area of such lot may be considered in calculating both the minimum land area requirements for dwelling units and for buildings or portions of buildings occupied other than as dwelling units.
(y) 
Appurtenances such as chimneys, ventilators, towers, spires, equipment, stairwell and/or elevator penthouses and ornamental features shall not be included when measuring the maximum permitted height of buildings. (Amended, Annual Town Meeting, May 13, 2002)
(z) 
Calculation of lot coverage in single-family districts for undeveloped tidal waterfront lots at the time of the adoption of this bylaw shall not include any land below the mean high water as determined by NGVD (National Geodetic Vertical Data).
C. 
Dimensional requirements for multi-family structures hereafter erected, enlarged or altered in Multi-Family A and B and Commercial Recreation A, B, or C District; Business.
Table 51
Number of Stories
Front Setback
Side Setback
Rear Setback
Minimum Land Area per Apartment Unit
Multi-family A and B Zones
MF-A
All
25 feet
15 feet
25 feet
5,000 sq. ft.
MF-B
All
25 feet
15 feet
25 feet
2,000 sq. ft.
Commercial Recreation A, B, C, and Business Zones
1 Story
25 feet
10 feet
20 feet
7,000 sq. ft.
2 Story
25 feet
15 feet
25 feet
4,800 sq. ft.
3 Story
25 feet
17 feet
27 feet
3,600 sq. ft.
4 Story
25 feet
19 feet
29 feet
3,000 sq. ft.
5 Story
25 feet
2 feet(a)
2 feet(a)
2,400 sq. ft.
Note:
(a)
This space requirement shall be added for each additional story over the four-story requirement.
D. 
Table 52. Dimensional Requirements and Intensity Regulations for Townhouse Residence District.
NOTE: Parenthetical letters refer to footnotes in Subsection B.
(1) 
Minimum Lot Area: 3 acres (m).
(2) 
Minimum Lot Frontage: 150 feet (a)(c)(k).
(3) 
Maximum Height of Buildings: 40 feet (e)(f)(l).
(4) 
Maximum Lot Coverage:*
(a) 
Residential Buildings: 25% (g).
(b) 
Residential Garages and Parking Buildings: 5% (g).
(c) 
Nonresidential Buildings: 1% (g).
(d) 
Recreational Structures: 10% (g).
(e) 
Aggregate Lot Coverage for All Structures: 30% (g).
*
Proximity of Multi-Family Dwellings to Each Other
a.
Multi-family dwellings may be grouped together so long as (1) there shall be a minimum distance of 24 feet between multi-family dwellings and (2) the total number of dwelling units in any grouping of multi-family dwellings shall not exceed 20.
b.
Groupings of multi-family dwellings as provided in Footnote (a.), above shall be located so that there shall be a minimum distance of 50 feet between such groupings.
(5) 
Minimum setback from lot lines:
(a) 
From a Single-Family A District: 50 feet (a)(j).
(b) 
From a Single-Family B District: 20 feet (a)(j).
(c) 
From a Single-Family C District: 50 feet (a)(j).
(d) 
From a Conservation District: 0 feet (j).
(e) 
From all other Districts: 25 feet (a)(j).
(6) 
Minimum land area per dwelling unit from each dwelling unit: 7,800 sq. ft. (m).
(7) 
Number of buildings per lot. Notwithstanding any other provisions of this zoning bylaw, more than one principal building, more than two multi-family dwellings, and more than one other permitted structure may be constructed on a lot so long as there is no violation of the requirements of § 410-3.3B(3) and of the uses permitted in § 410-3.3A(3).
E. 
Table 53. Dimensional Requirements and Intensity Regulations for Waterfront District.
(1) 
Setbacks:
(a) 
15 feet from any street.
(b) 
There shall be a minimum distance of 20 feet between buildings.
(2) 
Building Heights:
(a) 
Maximum structure height: one story (grade to eave height, eight feet).
(b) 
Maximum Structure Height: 2 1/2 stories (grade to eave height, 20 feet)
(c) 
Maximum Allowable Eave to Ridge Height: 10 feet.
(d) 
Maximum Structure Height: 30 feet.
Exception: Subject to review by the Design Review Board and the granting of a Special Permit by the Planning Board, turrets, towers, cupolas, or other special features may exceed the thirty-foot height limit by 10 feet, provided the plan area of such features does not exceed 20% of the overall square footage of the roof.
(3) 
Massing
(a) 
Sloped roofs with a Minimum pitch of 6:12 are encouraged.
(b) 
Structures such as pergolas and open, roof-like structures such as awnings and pavilions which provide shelter while preserving views are encouraged.
(4) 
Density
(a) 
Lot coverage shall not exceed 50%.
(b) 
For the purpose of § 410-3.4, more than one principal building and/or more than one accessory building or structure may be constructed on a single lot.
F. 
Table 54. Dimensional Requirements and Intensity Regulations for Mixed Use Residential District.
NOTE: Parenthetical letters refer to footnotes in Subsection B.
(1) 
Minimum Lot Area: 5 acres (m).
(2) 
Minimum Lot Frontage: 150 feet (a)(c)(k).
(3) 
Maximum Height of Buildings: 40 feet (e)(f)(l).
(4) 
Maximum Lot Coverage:
(a) 
Residential, Business and Commercial, and/or mixed use buildings: 25% (g).
(b) 
Garages and Parking Buildings: 5% (g).
(c) 
Other Buildings and Structures: 1% (g).
(d) 
Recreational Structures and Facilities: 10% (g).
(e) 
Aggregate Lot Coverage for all Structures: 30% (g).
(5) 
Minimum Setback from Lot Lines
(a) 
From an adjacent Single Family Residence District: 50 feet (a)(j).
(b) 
From districts other than single family residence districts: 25 feet (a)(j).
(c) 
From public ways bordering the lot: 25 feet (a)(j).
(6) 
Minimum Land Area Requirements
(a) 
From each dwelling unit: 7,800 sq. ft. (l)(m)(x).
(b) 
For each 1,000 square feet of floor area of buildings or portions of buildings occupied other than as a residential dwelling unit: 35,000 sq. ft. (l)(m)(x)
(7) 
Number of Buildings Per Lot. Not withstanding any other provisions of this zoning bylaw, more than one principal building, more than two multi-family dwellings, and more than one other permitted structures may be constructed on a lot so long as there is no violation of the requirements of § 410-3.5B(2) and of the uses permitted in § 410-3.3A(2).
(8) 
Proximity of Buildings to Each Other
(a) 
Buildings may be grouped together so long as:
[1] 
There shall be a minimum distance of 24 feet between buildings; and
[2] 
The total number of dwelling units in any grouping of buildings shall not exceed 28 units.
(b) 
Groupings of buildings as provided in Subsection (8)(a) above shall be located so that there shall be a minimum distance of 30 feet between such groupings.
A. 
Parking capacity. Off-street parking areas shall be provided in accordance with Table 55:
Table 55: Parking Requirements*
[Amended 5-1-2017 ATM by Art. 23]
Building Use
Parking Spaces Required
One & Two family residential
2 spaces per dwelling unit
Multi-family residential
2 spaces per dwelling unit
Boarding house or rooming house
1 space per rental and/or a sleeping unit. Any bedroom or group of 2 beds in a single room constitutes a sleeping unit.
Offices, business, services, retail stores, service establishments and restaurants
1 space per 200 square feet of net retail floor area
Halls and places of assembly
1 space for each 10 occupants (based on the established occupancy load) pursuant to 780 CMR Section 106.5
Hotel, motel
1 space per rental room
Public and semi-public use
1 space per 500 square feet of net public area
Stores, offices and other lawful uses except hotels, motels, residences, boarding houses, and rooming houses which are located between Rockland House Road on the south and Water Street on the north
None, providing that the legal distance between the DCR public parking lot and the main pedestrian entrance of the store, office or other lawful use does not exceed 500 feet
Day-care centers
1 space for every 8 children
NOTE:
*
In no case shall there be less than one off-street parking space for each three full-time employees on the maximum working shift.
B. 
Parking Dimensions: Each off-street parking space shall be at least 180 square feet in area, nine feet in width and 20 feet in length, and have proper access. The loading space for commercial vehicles shall not be less than 30 feet in length, nor less than 10 feet in width, and have a minimum clear height of 14 feet.
C. 
Parking Location: No off-street parking and/or loading area shall be located on the set-back areas, or nearer than three feet to buildings or structures other than parking garages, or located on side yards nearer to the side lot line than three feet. However, for all one-, two-, and three-family dwellings, parking in a driveway with an improved surface approved by the Building Commissioner shall not be considered a violation of the front set-back.
(1) 
In a Business District, off-street parking is permitted on setback areas.
(2) 
For one, two and three family dwellings, off-street parking shall be permitted within the set-back areas, but not closer than three feet to any interior lot lines. Such parking area shall have an improved surface that shall be approved by the Building Commissioner, with consideration given to runoff and drainage. Said permission does not exempt proposed new one, two or three family dwellings from complying with the parking requirements for new construction.
D. 
General Requirements for Parking and Loading Areas: Parking and loading areas shall be adequately drained and surfaced with an all-weather dust-free surface and designed so that drainage does not cross public sidewalks. Off-street loading berths shall be provided in such a way as to eliminate interference with public use of sidewalks, streets or alleys. Lights used to illuminate parking and loading areas shall be arranged so as to reflect light away from adjoining residential premises. Parking egresses shall be limited to 30 foot wide curb openings.
E. 
Screening Requirements: For all open-air parking areas containing five or more parking spaces and all open air loading areas, including those for auto service and drive-in establishments and for boat or vehicle sales, rentals, or storage, which adjoin or face a street or a residential, public or semi-public property:
(1) 
The street or adjacent property shall be protected from lights by: 1) a strip at least four feet wide, densely planted with shrubs or trees which are of a type that may be expected to form a year-round dense screen within three years, or 2) a wall, barrier, or fence of uniform appearance and at least 50% opaque, or 3) a landscaped earthen mound, or 4) a drop in grade from the adjacent property or street level to the parking level. Such screening shall be at least three feet high along the street and at least five feet high along the property lines abutting residential, public or semi-public property. These minimums shall apply to shrubs and trees used as screens at the time of planting. Such screening shall be maintained in good condition at all times.
(2) 
Parking stalls in parking lots shall be set back from the street lot line a minimum of five feet.
(3) 
At least 5% of the interior of a parking lot with 21 to 60 parking spaces and at least 10% of the interior or a parking lot with 61 or more parking spaces shall be landscaped and continually maintained. Planting along the perimeter of a parking area, whether required screening or a general beautification, shall not be considered as part of the required interior landscaping. The landscaping shall be distributed throughout the parking area and shall include trees or shrubs as well as other plant material. Existing trees shall be preserved wherever possible. No planting bed shall have a width of less than three feet. The provisions of this Subsection E(3) shall not apply to a Business District.
F. 
Trucks over 10,000 pounds gross weight and construction equipment are prohibited from parking in a residential district unless a Special Permit is granted by the Select Board. The Board shall consider evidence which shall be provided by the applicant regarding the following requirements:
[Amended 5-8-2021 ATM by Art. 6C]
(1) 
Availability of garage space on the premises.
(2) 
Availability of screened space on the premises.
(3) 
Size of land available for said use.
(4) 
Unavailability of suitable parking facilities.
(5) 
Detriment to the neighborhood.
G. 
Developments that include slips are required to provide one off-street parking space for every two slips available to the general public in addition to any other parking requirements. Such parking shall be located on-site or on private property within 1/4 mile of the site, unless exempted under Article V, Table 55. (Added, Annual Town Meeting May 3, 2005)