[Amended 6-3-2014 ATM by Art. 34, approved 9-10-2014; 6-3-2014 ATM by Art. 35, approved 9-10-2014; 6-4-2024 ATM by Art. 23, approved 12-23-2024]
All uses in GENERAL RESIDENCE Districts including uses allowed by Special Permit or exempted by MGL Chapter 40A, Section 3, shall meet the below development standards as applicable:
A. Lot area.
(1) In GENERAL RESIDENCE Districts the minimum lot area for all uses shall be at least 15,000 square feet, except that the minimum area for a two-family residence shall be at least 20,000 square feet. A contiguous area of the lot, at least 15,000 square feet in area and for a two-family residence at least 20,000 square feet in area, shall not include freshwater or coastal swamps, bogs, marshes and wet meadows, land below mean high water on land subject to tidal action, land under any water body for more than five months of the year (all as classified under the Wetlands Protection Act, MGL Chapter 131, Section 40), and drainage easements. The provisions of the last sentence shall apply only to lots created after May 25, 1999.
(2) There shall be no more than one single family dwelling permitted per lot.
B. Lot shape.
(1) Lots shall not have a constriction in the area connecting legal frontage to the building site less than 50 feet wide except that estate lots shall have a constriction not less than 30 feet.
(2) Lots shall include all the area between the legally required frontage and a line 20 feet perpendicular or radial to the legally required frontage. The above area can be decreased from the 20 foot depth if the area is within a line equal to or less than 45° from a line perpendicular to the street where the sideline intersects the street. These lot shape standards apply only to lots created after October 29, 1996, which are to be used as buildable lots.
C. Frontage.
(1) The minimum frontage for all uses in GENERAL RESIDENCE District shall be 100 feet except that two-family residences shall have a minimum frontage of at least 150 feet.
(2) Such frontage shall be on a public way, a way the Town Clerk certifies is maintained and used as a public way, or on a private way that in the opinion of the Planning Board is of sufficient width, suitable grade, and adequate construction to provide access and municipal services to the lot in accordance with MGL Chapter 41, Section 81L, or shown on a way that is built (or surety posted to ensure construction) and shown on a plan approved and endorsed by the Planning Board.
(3) Frontage for the purposes of the Zoning Bylaw, is defined as the continuous boundary between a lot and an abutting street, such boundary being located between lot lines or, in the case of a corner lot, between a lot line and the intersection of street lines extended.
(4) In the case of a lot abutting on more than one street, such lot shall be required to have the applicable minimum frontage on only one such street. Frontage cannot be gained on that portion of a road which is a bridge or a causeway across water.
(5) These frontage regulations are primarily for the purpose of minimizing congestion in streets by distributing access to lots over a minimum distance (frontage). Such distance appropriate to the general character and goals of the zoning district. In keeping with this purpose, access to a lot or building site does not need to originate from the street where legal frontage is provided, if said alternate access reduces the total number of access points (driveways) which would otherwise be located off streets or takes driveways off a busy street to a less busy street. These frontage regulations are also for the purpose of ensuring that the minimum legal frontage for a lot is located on a street which meets minimum street standards.
D. Setbacks. The purpose of lot setback requirements is to lessen congestion and overcrowding of lots to provide access within the lot for general circulation and maintenance of the buildings located thereon, to provide access in the case of fire, and to lessen congestion and promote safety in adjacent streets.
(1) Minimum setback dimensions. Any building or structure placed on a lot, whether temporary or permanent, shall meet the following minimum setback requirements:
(a) A twenty-foot minimum setback from street r-o-w lines or vehicular easement lines [unless Subsection
D(1)(c) applies].
(b) A twenty-foot minimum setback from all other perimeter property lines [unless Subsection
D(1)(c) applies].
(c) The setback from all other perimeter property lines or street lines if the entire building or structure is eight feet or under in height (the average height of the roof, from the ground, can be 12 feet or under) and does not exceed 200 square feet in area is a minimum of five feet from all other perimeter lot lines or 20 feet from a street line.
(2) Intersection sight triangle setback. At the intersection of streets, the corner lot shall not have any visual barrier placed in the triangle formed by a line connecting the two points 25 feet back from the intersection of the two street r-o-w lines and the lines of the r-o-w to the corner of the property. A visual barrier is an object or any group of objects which block the direct observation of approaching traffic between two feet and eight feet high. Fences of any type over two feet in height are prohibited.
(3) Exemptions from setback requirements.
(a) Buildings or structures which are legally in existence prior to October 26, 1993, shall be considered to be in compliance with §
375-10.4D and are allowed to expand along the setback line or lines of the existing building/structure to a point which intersects another existing setback line of the same building/structure or to a point that intersects the setback line defined in §
375-10.4D. Expansions are prohibited into the intersection sight triangle setback or within five feet of any perimeter property line. Exempt expansions shall not exceed the height of the part of the existing structure/building being expanded except where the expansion is outside the current setback and the height is otherwise allowed by zoning.
(b) In addition, buildings or structures may be placed a minimum of 10 feet from all other perimeter lot lines or 20 feet from a street line if the lot upon which the building or structure is to be located was in existence prior to October 26, 1993. The benefit of this exemption is available to lots which already had buildings or structures located thereon prior to October 26, 1993.
(c) Swimming pools are allowed to be placed within 10 feet of a perimeter property line or 30 feet from a street line.
(d) The setback of parking facilities is regulated by §
375-10.4G and Article
24 of the Zoning Bylaw. Fences, stonewalls, retaining walls and boundary delineation structures under six feet in height are exempt from these setback requirements, but are subject to the intersection sight triangle setback.
E. Height. The maximum height of all buildings or freestanding structures shall be 35 feet. Non-habitable structures placed on top of buildings shall not exceed 50 feet in height. Height shall be measured from the average of the finished grade at the foundation around the building or structure, to the highest part of the building or structure or to the average level of the highest gable or slope of a hip roof. Where non-habitable structures exceed 35 feet in height, the non-habitable structure shall be setback from all property lines at least twice the height of the non-habitable structure.
F. Percentage of lot coverage. In GENERAL RESIDENCE Districts, all uses on a lot which include, but are not limited to: buildings, structures, driveways, parking areas, gravel areas, walks, patios, storage areas, impermeable surfaces, etc. shall not cover more than 50% of the lot. Natural areas such as landscaping, gardens, lawns, etc. are not regulated within the 50% requirement.
G. Parking and driveways.
(1) The number of Off-Street Parking spaces shall be provided in accordance with the following table:
Use | Number of Parking Spaces Required |
|---|
Single Family Dwelling | 2 per dwelling |
Garages, Sheds, Storage Bldgs. | 0 |
Renting of Rooms | 1 per renter |
Home Occupation | 1/200 s.f. plus 1 per emp. |
Home Educational Uses | 3/200 s.f. plus 1 per emp. |
General Educational Uses (non profit) | 1/400 s.f. of educational space |
Place of Worship | 1 per 4 occupants |
Agricultural Uses* | 0 |
Stables* | 0 |
Gardens | 0 |
Aquaculture* | 0 |
Shellfishing | 0 |
Conservation Areas, Natural Recreation Areas | 1 per 400 s.f. of bldg. |
Municipal Uses | 1 per max. number of empl. per shift |
Fire District Uses | 1 per max. number of empl. per shift |
Real Estate Signs | 0 |
Exempt Uses | Number of spaces per uses above or Article 24 as applicable |
Special Permit Uses | Number of spaces as required by Special Permit |
* | All parking for these uses shall be off-street, except that for special events on-street parking may be permitted by the Select Board. |
(2) In GENERAL RESIDENCE Districts, parking facilities which include parking spaces, access aisles, driveways or areas used for motor vehicle storage or movement shall be set back at least five feet from perimeter property lines except where common driveways must cross lot lines or where driveways connect to the street.
(3) The parking lot surface for Agricultural businesses may be unpaved I.E., gravel, grass, crushed shells, mulch, etc.
(4) Each parking space shall be at least eight feet wide and 19 feet long and consist of an improved and graded surface, such as but not limited to, gravel, cobblestone, brick, asphalt, reprocessed asphalt or concrete. Parking facilities showing 10 or more spaces shall be regulated by the applicable standards and procedures of Article
24 in these zoning by-laws. Nine or less parking spaces are regulated by the standards set forth here in Article
10.
(5) Driveways shall not be located closer than 55 feet to an intersection of streets. The 55 feet shall be measured from the closest part of the driveway to the intersection of the two roadways at the corner or from the tangent of the roadway corner radius. For lots with frontage of 100 feet or less, driveways shall be limited to two curb cuts. For lots with frontage greater than 100 feet, one curb cut shall be allowed for each 50 feet of frontage.
(6) Common driveways are allowed serving as access to two or more single-family houses or two or more residential units but no more than four single family houses or four residential units. Common driveways shall be at least 16 feet wide and be located in a driveway easement at least 20 feet wide.
(7) The sixteen-foot wide common driveway shall be surfaced with a stable material; such as, but not limited to asphalt, reprocessed asphalt, concrete, brick, cobblestone, or compacted gravel at least 12 inches thick. All driveways shall not have a paved or improved surface wider than 20 feet within 20 feet of a street line. If a common driveway is used for access these standards shall apply, even if the lots served could gain access separately.
(8) Common driveways cannot serve five or more single family houses or five residential units except where they are approved as part of the Special Permit for a cluster or PRD development. As part of the Special Permit for a cluster or PRD development, these common driveway standards can be modified as deemed appropriate by the Special Permit granting authority.
(9) Access to the building site does not need to originate from the street where the legal lot frontage is provided. All driveways serve only as access to the building site and cannot be considered as streets for legal frontage as required under the Zoning Bylaw.
H. Lighting. All artificial lighting shall not contribute to light pollution or create a nuisance as a result of glare onto streets or abutting property. Lighting units shall not be located higher than 14 feet. Illumination of parking areas shall have the light source shielded from above and the light source shall not be visible from streets or abutting properties.
I. Other development standards.
(1) If 10 or more parking spaces are proposed, refer to Article
24 of the Zoning Bylaw for additional parking facility standards and procedures.
(2) If the land is located in one of these zoning overlay districts, additional development standards may be imposed:
Overlay District | Article of Zoning Bylaw |
|---|
Inland Wetland and Watershed Protection District | |
Coastal Wetlands District | |
Flood Prone Land District | 27 |
Aquifer Protection District | 28 |
J. Estate lots.
(1) The purpose of Estate Lot zoning is to encourage lots which significantly exceed the minimum lot area required by zoning as an alternative to creating minimum lot sizes under subdivision. This alternative is meant to preserve rural character by reducing density and congestion.
(2) Estate lots are lots allowed to have a minimum of 50 feet of frontage rather than the minimum frontage specified for the GENERAL RESIDENCE District, if the following conditions are met:
(a) The total area of the lot for a single family dwelling is at least 45,000 square feet and for a two family dwelling at least 60,000 square feet.
(b) For a single family dwelling, a contiguous area of the lot, at least 30,000 square feet in area, shall be non-wetland. For a two family dwelling, a contiguous area of the lot, at least 40,000 square feet in area, shall be non-wetland. Wetlands shall be as defined by MGL Chapter 131, Section 40, and the regulations promulgated incidental thereto as determined by the Conservation Commission.
(c) The lot shall not be further subdivided, and a deed restriction preventing further subdivision (enforceable by the Town of Dartmouth or any citizen of the Town) is recorded with the plan. The following notes shall also be placed on the plan: "Lots shown on this plan shall not be further subdivided" and "No building permit shall be issued for lots on this plan until a copy of the recorded deed restriction is delivered to the Building Commissioner of the Town of Dartmouth."
(d) When multiple estate lots are created from the same parcel of land, the estate lots shall be served by common driveways. The same parcel of land shall mean a lot in existence for at least five years.
(e) All buildings or structures on the estate lot are located at least 100 feet from any street and this restricted area is shown on the plan. All other setback requirements of the Zoning Bylaw apply.