AAA DISTRICT
The accessory building or structure shall not exceed 300 square feet of gross floor area.
The accessory building or structure shall not exceed one (1) story and a height of sixteen (16) feet; except for barns identified in §11-2.4.7 above.
Ground mounted solar panels shall not exceed 16 feet in height and shall be fully screened from any adjacent property line and street line at all times.
Ground mounted satellite dishes or disc type antenna shall not exceed 16 feet in height and shall be fully screened from any adjacent property line and street line at all times. Roof top satellite dishes and roof top disc type antenna are prohibited except for disc type antennas less than two feet in diameter.
Light poles for lighted athletic fields on town owned public school property may be permitted up to a height of 80 feet provided that all requirements of §32-19 are in compliance.(798, 08/13/2021; 825, 05/22/2023; 850, 03/17/2025)
| Lot Size |
Maximum Building Area of an Accessory Dwelling Unit |
Lots up to and including 1½ acres (0-65,340 sq. ft.) |
850 sq. ft., provided, however, that for the purposes of calculating Building and Total Coverage: the first 350 sq. ft. of any such accessory building or structure shall not be counted. The maximum footprint inclusive of 350 sq. ft. bonus is 850 sq. ft. |
Lots over 1½ acres (65,340 sq. ft. or greater) |
1,000 sq. ft. |
b. The Accessory Dwelling Unit may only have a single interior kitchen.
c. The maximum height for an Accessory Dwelling Unit shall be measured to the highest point of the roof, excluding dormers as permitted in §11-2.4.8A (i) and a cupola as permitted in §11-2.4.8A (h). The Accessory Dwelling Unit may not exceed the following height limitations:
| Roof Type |
Maximum Roof Height for an Accessory Dwelling Unit |
Main Roof with a slope of 6:12 or greater |
Twenty-six (26) feet |
Main Roof with a slope of less than 6:12 |
Sixteen (16) feet |
*For the purposes of this section only, the definition of Dormer is a roofed structure, often containing a window that projects vertically beyond the plane of a pitched roof. Dormers are commonly used to increase the usable space and to create window openings in a roof plane.
Existing accessory buildings and structures, inclusive of barns, exceeding the standards listed in the tables above may be converted into an Accessory Dwelling Unit subject to Special Permit approval from the Planning and Zoning Commission.
d. Subject to Section 11-2.4.8A.(a) and (b) above, the accessory building or structure shall meet all setback, coverage, grading, drainage, and other requirements applicable to the property.
e. If the property is not on Town sewers, the property owner or their designee must obtain the Westport-Weston Health District approval for the septic system. State approval of the proposed septic systems may also be required pursuant to state statute.
f. If the property is on Town sewers, proof of the sewer hookup must be submitted to the P&Z Office by the property owner or their designee.
g. There are at least three (3) off-street parking spaces on the lot and proof of adequate parking must be submitted to the Planning and Zoning Office by the property owner or his designee.
h. Cupolas shall be permitted on accessory buildings provided that: (i) the cupola shall not be higher than 5 feet above the ridge line or highest point of the roof; and (ii) the cupola shall not exceed 5% of the footprint of the roof area of the building on which it is located, or 25 square feet, whichever is less. The cupola cannot be used for human habitation.
i. Dormers shall be exempt from maximum height on ADU's provided they are setback from the face of the building at least 1 foot and from the side of the building at least 2 feet. The dormer shall not exceed 60% of the footprint of the floor below and shall have a roof pitch of at least 3:12. The dormer is not permitted to exceed the height of the existing building ridge line and must not be technically or visually coplanar.
j. The provisions listed above may be modified for applications approved pursuant to §32-18. (Historic Residential Structures).
k. Only one accessory dwelling unit shall be permitted per lot.
l. Any accessory dwelling unit located in the Special Flood Hazard Area must be compliant with the floodplain regulations in §31-11. No additional building height is permitted for an existing or new structure located within the Special Flood Hazard Area when proposed to be floodplain compliant.(798, 08/13/2021; 825, 05/22/2023)
The Planning and Zoning Director, after consultation with the Westport Housing Authority, shall annually publish a notice of the following:
Requirements and Standards:
A Declaration of Restriction in the form prescribed by the Planning and Zoning Office and approved by the Town Attorney and which includes language stating that the Declaration of Restriction cannot be released without the consent of the P&Z Director of the Town of Westport, or their designee, and only under certain circumstance.
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AAA DISTRICT
The accessory building or structure shall not exceed 300 square feet of gross floor area.
The accessory building or structure shall not exceed one (1) story and a height of sixteen (16) feet; except for barns identified in §11-2.4.7 above.
Ground mounted solar panels shall not exceed 16 feet in height and shall be fully screened from any adjacent property line and street line at all times.
Ground mounted satellite dishes or disc type antenna shall not exceed 16 feet in height and shall be fully screened from any adjacent property line and street line at all times. Roof top satellite dishes and roof top disc type antenna are prohibited except for disc type antennas less than two feet in diameter.
Light poles for lighted athletic fields on town owned public school property may be permitted up to a height of 80 feet provided that all requirements of §32-19 are in compliance.(798, 08/13/2021; 825, 05/22/2023; 850, 03/17/2025)
| Lot Size |
Maximum Building Area of an Accessory Dwelling Unit |
Lots up to and including 1½ acres (0-65,340 sq. ft.) |
850 sq. ft., provided, however, that for the purposes of calculating Building and Total Coverage: the first 350 sq. ft. of any such accessory building or structure shall not be counted. The maximum footprint inclusive of 350 sq. ft. bonus is 850 sq. ft. |
Lots over 1½ acres (65,340 sq. ft. or greater) |
1,000 sq. ft. |
b. The Accessory Dwelling Unit may only have a single interior kitchen.
c. The maximum height for an Accessory Dwelling Unit shall be measured to the highest point of the roof, excluding dormers as permitted in §11-2.4.8A (i) and a cupola as permitted in §11-2.4.8A (h). The Accessory Dwelling Unit may not exceed the following height limitations:
| Roof Type |
Maximum Roof Height for an Accessory Dwelling Unit |
Main Roof with a slope of 6:12 or greater |
Twenty-six (26) feet |
Main Roof with a slope of less than 6:12 |
Sixteen (16) feet |
*For the purposes of this section only, the definition of Dormer is a roofed structure, often containing a window that projects vertically beyond the plane of a pitched roof. Dormers are commonly used to increase the usable space and to create window openings in a roof plane.
Existing accessory buildings and structures, inclusive of barns, exceeding the standards listed in the tables above may be converted into an Accessory Dwelling Unit subject to Special Permit approval from the Planning and Zoning Commission.
d. Subject to Section 11-2.4.8A.(a) and (b) above, the accessory building or structure shall meet all setback, coverage, grading, drainage, and other requirements applicable to the property.
e. If the property is not on Town sewers, the property owner or their designee must obtain the Westport-Weston Health District approval for the septic system. State approval of the proposed septic systems may also be required pursuant to state statute.
f. If the property is on Town sewers, proof of the sewer hookup must be submitted to the P&Z Office by the property owner or their designee.
g. There are at least three (3) off-street parking spaces on the lot and proof of adequate parking must be submitted to the Planning and Zoning Office by the property owner or his designee.
h. Cupolas shall be permitted on accessory buildings provided that: (i) the cupola shall not be higher than 5 feet above the ridge line or highest point of the roof; and (ii) the cupola shall not exceed 5% of the footprint of the roof area of the building on which it is located, or 25 square feet, whichever is less. The cupola cannot be used for human habitation.
i. Dormers shall be exempt from maximum height on ADU's provided they are setback from the face of the building at least 1 foot and from the side of the building at least 2 feet. The dormer shall not exceed 60% of the footprint of the floor below and shall have a roof pitch of at least 3:12. The dormer is not permitted to exceed the height of the existing building ridge line and must not be technically or visually coplanar.
j. The provisions listed above may be modified for applications approved pursuant to §32-18. (Historic Residential Structures).
k. Only one accessory dwelling unit shall be permitted per lot.
l. Any accessory dwelling unit located in the Special Flood Hazard Area must be compliant with the floodplain regulations in §31-11. No additional building height is permitted for an existing or new structure located within the Special Flood Hazard Area when proposed to be floodplain compliant.(798, 08/13/2021; 825, 05/22/2023)
The Planning and Zoning Director, after consultation with the Westport Housing Authority, shall annually publish a notice of the following:
Requirements and Standards:
A Declaration of Restriction in the form prescribed by the Planning and Zoning Office and approved by the Town Attorney and which includes language stating that the Declaration of Restriction cannot be released without the consent of the P&Z Director of the Town of Westport, or their designee, and only under certain circumstance.
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