Southbury City Zoning Code

SECTION 4

- Area, location and bulk standards.

4.1 Schedule B: "Schedule B - Standards" is hereby declared to be a part of these Regulations.

4.2 Lot Area, Shape and Frontage: Each lot shall have the minimum area as specified in Schedule B. Each lot shall be of such shape that a square with a minimum dimension specified in Schedule B will fit on the lot, and in Residential Districts, except on permitted interior lots, some portion of such square shall lie within the area required for setback from a street line. Each lot, except permitted interior lots, shall have the frontage on a street specified in Schedule B. No interior lot shall be established in any Residential R-20 District.

4.2.1 Exception—B-3A and M-5 Districts: In Business Districts #B-3A and Industrial M-5 Districts, the Planning Commission, in connection with approval of a subdivision under the Subdivision Regulations of the Town of Southbury, may grant a Special Exception to permit establishment of lots having an area of as little as two (2) acres, a square on the lot having a minimum dimension of 200 feet and a minimum lot frontage of 175 feet when such lots have sole access from an interior street in the subdivision or a street other than Main Street South or a state highway.

4.2.2 Exception - Open Space Reservation: The area, shape and frontage requirements of Par. 4.2 shall not apply to a parcel of land that is reserved for park, playground, conservation or other open space purposes and is either owned by the Town of Southbury, State of Connecticut or a non-profit corporation or is shown as open space on a subdivision map approved by the Planning Commission, provided that the following conditions are met:

The parcel shall either contain a strip of land which is everywhere not less than 20 feet in width connecting to a street or shall have a frontage of 20 feet or more on an easement of access or private right-of-way which is everywhere not less than 20 feet in width connecting to a street; and

No building or other structure shall be constructed, reconstructed, enlarged, extended, moved or structurally altered on the parcel.

4.3 Height: No building or other structure shall exceed the number or stories and/or the maximum height, whichever is less, as specified in Schedule B.

4.3.1 Exception - Particular Uses: A greater or lesser maximum height may be specified in these Regulations for buildings and other structures established for particular uses authorized by grant of a SPECIAL EXCEPTION or approval of a SITE DEVELOPMENT PLAN.

4.4 Setbacks: No building or other structure shall extend within less than the minimum distances of a) the street line of Main Street, any State Highway or any other street, b) any property line or c) any Residential District boundary line as specified in Schedule B, except as follows:

4.4.1 Signs: Permitted signs, as specified in Section 10, may extend within lesser distances of a property or street line.

4.4.2 Projections: Pilasters, belt courses, sills, cornices, marquees, canopies, eaves and similar architectural features may project three (3) feet into the area required for setback from a property or street line; handicapped access ramps meeting standards of the Connecticut Basic Building Code may project at a distance into the area required for setback from a property or street line necessary to construct the ramp.

4.4.3 Narrow Streets: The required setback from a street line of a street having a width of less than 50 feet shall be increased by one-half of the difference between 50 feet and the actual width of the street.

4.4.4 Farm Stands: Permitted stands for the display and sale of farm and truck garden and forestry produce may extend to within 15 feet of any street line.

4.4.5 B-2E, B-2F, B-3B, M-2A and M-5: In Business Districts #2E and #2F, Designed Business District #3B and Industrial M-2A and M-5 Districts, buildings and other structures may extend into the area required for setback from the street line of Main Street South or any state highway, provided that the following conditions are met:

The buildings and other structures located within such setback area shall not have an aggregate lot coverage upon such setback area that exceed the percentage of lot coverage specified for the district in Schedule B; and

The buildings and other structures shall not extend nearer to such street line than one-half the setback specified in Schedule B.

4.4.6 Common Walls: Adjacent lots in Business Districts B-2A, B-2C and B-2D may, by mutual agreement between owners of such lots and filed in the Office of the Southbury Town Clerk, eliminate the required building setback from the common property line and establish a party wall on such line, when there is compliance with the State Basic Building Code and there is demonstration of permanent vehicular access to the rear of the buildings for fire protection purposes.

4.4.7 Boat houses, docks, launching ramps and facilities and marinas; bulkheads: No setback from a property line is required for a boat house, dock or launching ramp or facility, or the facilities of a marina for docking or launching boats, when the property line is along or in navigable waters, or the owner of the lot otherwise has rights of access to navigable waters, and elimination of the setback will enable boating use of navigable waters. The required setback from adjacent lots, however, shall be provided, and a boat house that is also used as a dwelling is not eligible for such setback exception. No setback from a property line is required for a bulkhead or seawall constructed along or in navigable waters.

4.5Coverage and Bulk: The aggregate lot coverage of all buildings and other structures on any lot shall not exceed the percentage of the lot area as specified in Schedule B. The total floor area of all buildings and other structures on any lot, excluding basements, shall not exceed the percentage of the lot area as specified in Schedule B.

4.5.1 Exception: In Industrial M-5 Districts, the Planning Commission, in connection with approval of a SPECIAL EXCEPTION under Paragraph 4.2.1 and a subdivision under the Subdivision Regulations of the Town of Southbury, may grant a SPECIAL EXCEPTION to permit an increase in lot coverage to as much as 25% and/or an increase in floor area to as much as 50%, provided that the maximum permitted lot coverage and floor area is specified on the subdivision map and that the amount of increase in each is in inverse proportion to the amount by which the lot area is reduced under Paragraph 4.2.1.

4.6 Minimum Floor Area, Dwelling: Each one-story dwelling shall have a minimum floor area on the ground floor as specified in Schedule B. Each split-level dwelling shall have a minimum floor area on the upper two floors as specified in Schedule B. Each dwelling with two or more stories, other than split-level dwelling, shall have a minimum floor area on the ground floor and a total minimum floor area as specified in Schedule B. Each dwelling containing two (2) or more dwelling units shall also have a minimum floor area for each dwelling unit as specified in Schedule B.

4.7 Setbacks/Nonconformities. Any dwelling, including decks and porches attached thereto, located in an R-20 zone which is legally nonconforming with respect to the side yard requirement of said zone (line 8) may be enlarged and extended into the required side yard to the same extent as the existing dwelling. However, no such enlarged or extended dwelling shall be permitted when the resulting separation from a principal building on the adjacent lot would be less than 10 feet or the separation from the side property line would be less than 5 feet. This exception does not apply to accessory buildings or structures.

SCHEDULE B—STANDARDS

		R-20	R-30	R-30A	R-40	R-60	R-80	R-60C	B-1A	B-1B	B-2	B-2A	B-2B	B-2C	B-2D	B-2E	B-2F	B-3	B-3A	B-3B	B-3C	B-3D	B-3E	B-4	M-2	M-2A	M-5	PUD	IND
1.	Minimum lot area (in sq. ft. or acres.)	20,000	30,000	30,000	40,000	60,000	80,000	60,000	40,000	60,000	40,000	40,000	40,000	40,000	40,000	40,000	80,000	40,000	5 Ac.	2 Ac.	40,000	2 Ac.	40,000	40,000	2 Ac.	2 Ac.	4 Ac.	5 Ac.	10 Ac.
2.	Minimum lot area for interior lot (in sq. ft. or acres.)	—	45,000	45,000	60,000	90,000	120,000	90,000	40,000	60,000	40,000	40,000	40,000	40,000	40,000	40,000	80,000	40,000	5 Ac.	2 Ac.	40,000	2 Ac.	40,000	40,000	2 Ac.	2 Ac.	4 Ac.	5 Ac.	See section VI.
3.	Minimum dimension of square on the lot	100′	125′	125′	150′	200′	200′	200′	150′	200′	150′	150′	150′	150′	150′	150′	200′	150′	200′	200′	150′	200′	150′	150′	200′	200′	300′	300′	200′
4.	Minimum lot frontage, except interior lots	90′	110′	110′	135′	175′	175′	175′	135′	175′	50′	135′	135′	135′	135′	135′	175′	135′	200′	175′	135′	175′	135′	135′	50′	175′	300′	50′	200′
5.	Maximum number of stories for a building	3	3	3	3	3	3	3	2½	2½	3	3	3	3	3	3	2½	3	3	3	3	3	3	3	3	3	3	3	3
6.	Maximum height of a building or structure	40′	40′	40′	40′	40′	40′	40′	30′	30′	40′	30′	30′	30′	30′	30′	35′	40′	40′	40′	30′	40′	40′	40′	40′	40′	40′	40′	40′
7.	Minimum setback from street line of— 7.1 Main Street South or any State Highway	30′	40′	40′	50′	50′	50′	50′	50′	50′	20′	20′	20′	50′	20′	100′	100′	50′	100′	100′	50′	50′	50′	50′	50′	100′	100′	50′	200′
	7.2 Any other street	30′	40′	40′	50′	50′	50′	50′	50′	50′	20′	20′	20′	50′	20′	20′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	200′
8.	Minimum setback from property line	15′	20′	20′	25′	30′	30′	30′	20′	20′	10′	20′	10′	20′	10′	20′	25′	25′	25′	25′	25′	25′	25′	25′	25′	25′	25′	50′	150′
9.	Minimum setback from Residential District boundary line	—	00	00	00	00	00	00	40′	40′	40′	40′	40′	40′	40′	40′	100′	50′	60′	50′	50′	100′	50′	50′	50′	100′	100′	50′	150′
10.	Maximum lot coverage by buildings and structures as percent of lot area	20%	20%	20%	10%	10%	10%	10%	20%	20%	25%	15%	20%	15%	20%	20%	15%	10%	20%	10%	15%	20%	15%	10%	25%	15%	15%	25%	10%
11.	Maximum floor area as percent of lot area	40%	40%	40%	20%	20%	20%	20%	40%	20%	50%	30%	40%	30%	40%	40%	20%	20%	30%	20%	30%	40%	20%	20%	50%	20%	20%	50%	20%
12.	Minimum floor area on ground floor for one-story dwelling (in sq. ft.)	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	NA	900	900	900	900	900	900	NA
13.	Minimum floor area on upper two (2) floors for split-level dwelling (in sq. ft.)	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	NA	1,200	1,200	1,200	1,200	1,200	1,200	NA
14.	Minimum floor area for two (2) or more story dwelling (in sq. ft.) Ground Floor	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	NA	800	800	800	800	800	800	NA
	Total Floor Area	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1200		1,200	1,200	1,200	1,200	1,200	1,200
15.	Minimum floor area for each dwelling unit (in sq. ft.)	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	NA	500	500	500	500	500	500	NA
Note: See sec. 4 and sec. 18 (Industrial (IND) Zone) for additional standards and exceptions.
Note: Any dwelling, including decks and porches attached thereto, located in an R-20 zone which is legally nonconforming with respect to the side yard requirement of said zone (line 8) may be enlarged and extended into the required side yard to the same extent as the existing dwelling. However, no such enlarged or extended building or structure shall be permitted when the resulting separation from a principal building on the adjacent lot would be less than ten (10) feet or the separation from the side property line would be less than five (5) feet. This exception does not apply to accessory buildings or structures.

(Ord. of 8-3-23(1), § 4; Ord. of 6-11-25(1))

Southbury City Zoning Code

SECTION 4

- Area, location and bulk standards.

4.1 Schedule B: "Schedule B - Standards" is hereby declared to be a part of these Regulations.

No building or other structure shall be constructed, reconstructed, enlarged, extended, moved or structurally altered on the parcel.

4.3 Height: No building or other structure shall exceed the number or stories and/or the maximum height, whichever is less, as specified in Schedule B.

4.4.1 Signs: Permitted signs, as specified in Section 10, may extend within lesser distances of a property or street line.

4.4.4 Farm Stands: Permitted stands for the display and sale of farm and truck garden and forestry produce may extend to within 15 feet of any street line.

The buildings and other structures shall not extend nearer to such street line than one-half the setback specified in Schedule B.

SCHEDULE B—STANDARDS

		R-20	R-30	R-30A	R-40	R-60	R-80	R-60C	B-1A	B-1B	B-2	B-2A	B-2B	B-2C	B-2D	B-2E	B-2F	B-3	B-3A	B-3B	B-3C	B-3D	B-3E	B-4	M-2	M-2A	M-5	PUD	IND
1.	Minimum lot area (in sq. ft. or acres.)	20,000	30,000	30,000	40,000	60,000	80,000	60,000	40,000	60,000	40,000	40,000	40,000	40,000	40,000	40,000	80,000	40,000	5 Ac.	2 Ac.	40,000	2 Ac.	40,000	40,000	2 Ac.	2 Ac.	4 Ac.	5 Ac.	10 Ac.
2.	Minimum lot area for interior lot (in sq. ft. or acres.)	—	45,000	45,000	60,000	90,000	120,000	90,000	40,000	60,000	40,000	40,000	40,000	40,000	40,000	40,000	80,000	40,000	5 Ac.	2 Ac.	40,000	2 Ac.	40,000	40,000	2 Ac.	2 Ac.	4 Ac.	5 Ac.	See section VI.
3.	Minimum dimension of square on the lot	100′	125′	125′	150′	200′	200′	200′	150′	200′	150′	150′	150′	150′	150′	150′	200′	150′	200′	200′	150′	200′	150′	150′	200′	200′	300′	300′	200′
4.	Minimum lot frontage, except interior lots	90′	110′	110′	135′	175′	175′	175′	135′	175′	50′	135′	135′	135′	135′	135′	175′	135′	200′	175′	135′	175′	135′	135′	50′	175′	300′	50′	200′
5.	Maximum number of stories for a building	3	3	3	3	3	3	3	2½	2½	3	3	3	3	3	3	2½	3	3	3	3	3	3	3	3	3	3	3	3
6.	Maximum height of a building or structure	40′	40′	40′	40′	40′	40′	40′	30′	30′	40′	30′	30′	30′	30′	30′	35′	40′	40′	40′	30′	40′	40′	40′	40′	40′	40′	40′	40′
7.	Minimum setback from street line of— 7.1 Main Street South or any State Highway	30′	40′	40′	50′	50′	50′	50′	50′	50′	20′	20′	20′	50′	20′	100′	100′	50′	100′	100′	50′	50′	50′	50′	50′	100′	100′	50′	200′
	7.2 Any other street	30′	40′	40′	50′	50′	50′	50′	50′	50′	20′	20′	20′	50′	20′	20′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	200′
8.	Minimum setback from property line	15′	20′	20′	25′	30′	30′	30′	20′	20′	10′	20′	10′	20′	10′	20′	25′	25′	25′	25′	25′	25′	25′	25′	25′	25′	25′	50′	150′
9.	Minimum setback from Residential District boundary line	—	00	00	00	00	00	00	40′	40′	40′	40′	40′	40′	40′	40′	100′	50′	60′	50′	50′	100′	50′	50′	50′	100′	100′	50′	150′
10.	Maximum lot coverage by buildings and structures as percent of lot area	20%	20%	20%	10%	10%	10%	10%	20%	20%	25%	15%	20%	15%	20%	20%	15%	10%	20%	10%	15%	20%	15%	10%	25%	15%	15%	25%	10%
11.	Maximum floor area as percent of lot area	40%	40%	40%	20%	20%	20%	20%	40%	20%	50%	30%	40%	30%	40%	40%	20%	20%	30%	20%	30%	40%	20%	20%	50%	20%	20%	50%	20%
12.	Minimum floor area on ground floor for one-story dwelling (in sq. ft.)	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	NA	900	900	900	900	900	900	NA
13.	Minimum floor area on upper two (2) floors for split-level dwelling (in sq. ft.)	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	NA	1,200	1,200	1,200	1,200	1,200	1,200	NA
14.	Minimum floor area for two (2) or more story dwelling (in sq. ft.) Ground Floor	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	NA	800	800	800	800	800	800	NA
	Total Floor Area	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1200		1,200	1,200	1,200	1,200	1,200	1,200
15.	Minimum floor area for each dwelling unit (in sq. ft.)	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	NA	500	500	500	500	500	500	NA
Note: See sec. 4 and sec. 18 (Industrial (IND) Zone) for additional standards and exceptions.
Note: Any dwelling, including decks and porches attached thereto, located in an R-20 zone which is legally nonconforming with respect to the side yard requirement of said zone (line 8) may be enlarged and extended into the required side yard to the same extent as the existing dwelling. However, no such enlarged or extended building or structure shall be permitted when the resulting separation from a principal building on the adjacent lot would be less than ten (10) feet or the separation from the side property line would be less than five (5) feet. This exception does not apply to accessory buildings or structures.

(Ord. of 8-3-23(1), § 4; Ord. of 6-11-25(1))

Southbury City Zoning Code

SECTION 4

- Area, location and bulk standards.

4.1 Schedule B: "Schedule B - Standards" is hereby declared to be a part of these Regulations.

No building or other structure shall be constructed, reconstructed, enlarged, extended, moved or structurally altered on the parcel.

4.3 Height: No building or other structure shall exceed the number or stories and/or the maximum height, whichever is less, as specified in Schedule B.

4.4.1 Signs: Permitted signs, as specified in Section 10, may extend within lesser distances of a property or street line.

4.4.4 Farm Stands: Permitted stands for the display and sale of farm and truck garden and forestry produce may extend to within 15 feet of any street line.

The buildings and other structures shall not extend nearer to such street line than one-half the setback specified in Schedule B.

SCHEDULE B—STANDARDS

		R-20	R-30	R-30A	R-40	R-60	R-80	R-60C	B-1A	B-1B	B-2	B-2A	B-2B	B-2C	B-2D	B-2E	B-2F	B-3	B-3A	B-3B	B-3C	B-3D	B-3E	B-4	M-2	M-2A	M-5	PUD	IND
1.	Minimum lot area (in sq. ft. or acres.)	20,000	30,000	30,000	40,000	60,000	80,000	60,000	40,000	60,000	40,000	40,000	40,000	40,000	40,000	40,000	80,000	40,000	5 Ac.	2 Ac.	40,000	2 Ac.	40,000	40,000	2 Ac.	2 Ac.	4 Ac.	5 Ac.	10 Ac.
2.	Minimum lot area for interior lot (in sq. ft. or acres.)	—	45,000	45,000	60,000	90,000	120,000	90,000	40,000	60,000	40,000	40,000	40,000	40,000	40,000	40,000	80,000	40,000	5 Ac.	2 Ac.	40,000	2 Ac.	40,000	40,000	2 Ac.	2 Ac.	4 Ac.	5 Ac.	See section VI.
3.	Minimum dimension of square on the lot	100′	125′	125′	150′	200′	200′	200′	150′	200′	150′	150′	150′	150′	150′	150′	200′	150′	200′	200′	150′	200′	150′	150′	200′	200′	300′	300′	200′
4.	Minimum lot frontage, except interior lots	90′	110′	110′	135′	175′	175′	175′	135′	175′	50′	135′	135′	135′	135′	135′	175′	135′	200′	175′	135′	175′	135′	135′	50′	175′	300′	50′	200′
5.	Maximum number of stories for a building	3	3	3	3	3	3	3	2½	2½	3	3	3	3	3	3	2½	3	3	3	3	3	3	3	3	3	3	3	3
6.	Maximum height of a building or structure	40′	40′	40′	40′	40′	40′	40′	30′	30′	40′	30′	30′	30′	30′	30′	35′	40′	40′	40′	30′	40′	40′	40′	40′	40′	40′	40′	40′
7.	Minimum setback from street line of— 7.1 Main Street South or any State Highway	30′	40′	40′	50′	50′	50′	50′	50′	50′	20′	20′	20′	50′	20′	100′	100′	50′	100′	100′	50′	50′	50′	50′	50′	100′	100′	50′	200′
	7.2 Any other street	30′	40′	40′	50′	50′	50′	50′	50′	50′	20′	20′	20′	50′	20′	20′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	50′	200′
8.	Minimum setback from property line	15′	20′	20′	25′	30′	30′	30′	20′	20′	10′	20′	10′	20′	10′	20′	25′	25′	25′	25′	25′	25′	25′	25′	25′	25′	25′	50′	150′
9.	Minimum setback from Residential District boundary line	—	00	00	00	00	00	00	40′	40′	40′	40′	40′	40′	40′	40′	100′	50′	60′	50′	50′	100′	50′	50′	50′	100′	100′	50′	150′
10.	Maximum lot coverage by buildings and structures as percent of lot area	20%	20%	20%	10%	10%	10%	10%	20%	20%	25%	15%	20%	15%	20%	20%	15%	10%	20%	10%	15%	20%	15%	10%	25%	15%	15%	25%	10%
11.	Maximum floor area as percent of lot area	40%	40%	40%	20%	20%	20%	20%	40%	20%	50%	30%	40%	30%	40%	40%	20%	20%	30%	20%	30%	40%	20%	20%	50%	20%	20%	50%	20%
12.	Minimum floor area on ground floor for one-story dwelling (in sq. ft.)	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	900	NA	900	900	900	900	900	900	NA
13.	Minimum floor area on upper two (2) floors for split-level dwelling (in sq. ft.)	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	NA	1,200	1,200	1,200	1,200	1,200	1,200	NA
14.	Minimum floor area for two (2) or more story dwelling (in sq. ft.) Ground Floor	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	800	NA	800	800	800	800	800	800	NA
	Total Floor Area	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1,200	1200		1,200	1,200	1,200	1,200	1,200	1,200
15.	Minimum floor area for each dwelling unit (in sq. ft.)	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	500	NA	500	500	500	500	500	500	NA
Note: See sec. 4 and sec. 18 (Industrial (IND) Zone) for additional standards and exceptions.
Note: Any dwelling, including decks and porches attached thereto, located in an R-20 zone which is legally nonconforming with respect to the side yard requirement of said zone (line 8) may be enlarged and extended into the required side yard to the same extent as the existing dwelling. However, no such enlarged or extended building or structure shall be permitted when the resulting separation from a principal building on the adjacent lot would be less than ten (10) feet or the separation from the side property line would be less than five (5) feet. This exception does not apply to accessory buildings or structures.

(Ord. of 8-3-23(1), § 4; Ord. of 6-11-25(1))