3. Residence Zones

Note: Some tabbed section titles may be abbreviated for webpage formatting purposes. The complete title will appear in the text window.

 

Zoning Map can be viewed here (map will open in a new window)

3.0 Overview

 

Each of the uses listed in Section 3 of these Regulations is also subject to the requirements of Section 7 of these Regulations including but not limited to:

1. Parking;

2. Signage;

3. Earth removal and filling;

4. Access drives and corner visibility; and

5. Performance standards.

3.1 Purpose

 

1. The various residential districts within the City are intended to provide suitable areas for residential use and development appropriate to the environmental characteristics of the land and the character of the neighborhood.

2. The differentiation among the residential districts is intended to provide for variety in the size and density of residential neighborhoods and a diversity of housing opportunities after consideration of soil types, terrain, and infrastructure capacity.

3. The residential districts may allow for certain non-residential uses when it can be demonstrated that they are compatible with nearby residential uses and preserve neighborhood character and property values.

3.2  Permitted Principal Buildings, Structures and Uses

The following tables identify which uses are permitted in which residential zoning districts by which type of permit.

 

The locations of the zoning districts are depicted on the zoning map.  The abbreviations used for the zoning districts are as follows:

  • R-12       R-12 Residence Zone
  • R-8         R-8 Residence Zone
  • R-5.1     R-5.1 Residence Zone
  • R-5.2     R-5.2 Residence Zone
  • RM         Multi-Family Residence Zone

 

The “R” symbol in the table indicates that the use is allowed in that zone by the type of permit indicated in accordance with the standards outlined in these Regulations.

 

No “R” means the use is not permitted in that zone by that type of permit.  Check the other tables since a use may be permitted through a different type of permit.

 

3.2.A       No Permit Required

  R-12 R-8 R-5.1 R-5.2 RM
1.      Open space land or conservation areas. R R R R R
2.      Parks and playgrounds. R R R R R

 

3.2.B       Zoning / Building Permit Required (Staff)

  R-12 R-8 R-5.1 R-5.2 RM
1.      One-family detached dwelling. R R R R R
2.      One-family semi-detached dwelling. R R
3.      Two-family detached dwellings. R R

 

 

3.2.C        Site Plan Approval Required (Commission)

  R-12 R-8 R-5.1 R-5.2 RM
1.      Telecommunication Facilities, subject to the requirements of Section 6.12 of these Regulations. R R R R R

 

3.2.D       Special Permit Approval and Site Plan Approval Required (Commission)

  R-12 R-8 R-5.1 R-5.2 RM
1.      Multi-family dwellings and multi-family dwellings in groups subject to the requirements of Section 6.1 of these Regulations. R
2.      Rooming, boarding or lodging houses. R
3.      Congregate housing and/or assisted living facilities. R
4.      Convalescent, nursing or rest homes. R
5.      Hospitals. R
6.      Day care centers subject to the requirements of Section 6.4 of these Regulations. R R
7.      Public and private schools. R R R R R
8.      Public utility rights-of-way and structures. R R R R R
9.      Public building or facility. R R R R R
10.   Churches and places of religious worship. R R R R R
11.   Cemeteries. R R R R R
12.   Club, lodge or association. R
13.   Boat clubs, beach clubs and marinas subject to the requirements of Section 6.11 of these Regulations. R
14.   Vocational Training Facilities for persons with physical and developmental disabilities subject to the requirements of Section 6.9 of these Regulations. R R
15.   Community Residential Counseling Facilities, subject to the requirements of Section 6.8 of these Regulations R
16.   Halfway houses, subject to the requirements of Section 6.7 of these Regulations R

3.3  Permitted Accessory Buildings, Structures and Uses

 

3.3.A       Provisions

 

1.     No accessory building or structure shall be built on any lot on which there is not a principal building.

2.     Accessory buildings or structures in all residential districts shall be subject to the following:

a.  No accessory building or structures shall be permitted in any front yard or any required side yard setback.

b.  All accessory buildings and structures shall be located at least 6 feet from any principal building situated on the same lot.

c.  Accessory buildings, structures, or uses in any rear yard shall not be closer than 4 feet from any side or rear property line.

d.  The total of all accessory buildings and structures shall not occupy more than 40% of the required rear yard setback wherein they are located.

e.  No free-standing accessory building or structure shall exceed 15 feet in height, unless otherwise permitted by these Regulations.

 

3.3.B       No Permit Required

  R-12 R-8 R-5.1 R-5.2 RM
1.      Accessory uses that are customary, subordinate, and incidental to a principal use permitted by Section 3.2.A or Section 3.2.B. R R R R R
2.      The keeping of domesticated animals as pets but not an animal hospital. R R R R R
3.      The keeping of horses or similar livestock animals with one such animal permitted per three acres of land. R R R R
4.      Home office when conducted in accordance with Section 6.3. R R R R R
5.      Family day care home. R R R R R
6.      Retaining walls less than three feet (3’) in height. R R R R R
7.      Other fences or walls not over 7 feet in height (yard setbacks shall not apply but shall comply with corner visibility requirements). R R R R R
8.      Sale of alcoholic beverages when accessory to an approved club, lodge or association. R
9.      Special events when accessory to an authorized club, lodge or association provided that any state or local permits are obtained. R R R R

 

3.3.C        Zoning / Building Permit Required (Staff)

  R-12 R-8 R-5.1 R-5.2 RM
1.      Accessory structures that are customary, subordinate, and incidental to a principal use permitted by Section 3.2.A, Section 3.2.B, Section 3.2.C, or Section 3.2.D. R R R R R
2.      Private garages for up to three motor vehicles. R R R R
3.      Tool shed, garden house, playhouse, tennis court, or swimming pool. R R R R
4.      Tennis court fences R R R R R
5.      Minor home occupations when conducted in accordance with Section 6.3. R R R R R
6.      Retaining walls three feet (3’) or more in height. R R R R R

 

3.3.D       Site Plan Approval Required (Commission)

  R-12 R-8 R-5.1 R-5.2 RM
1.      Group daycare homes to subject to the requirements of Section 6.4. R R

3.3.E        Special Permit Approval and Site Plan Approval Required (Commission)

  R-12 R-8 R-5.1 R-5.2 RM
1.      Major home occupations or any home-based business not conducted in accordance with Section 6.3. R R R R R
2.      Bed and breakfast establishments, subject to the requirements of Section 6.5 of these Regulations. R R R R R
3.      Private garages for more four or more motor vehicles. R R R R R
4.      Fences or free-standing walls over 6 feet in height which do not meet yard setback or corner visibility requirements. R R R R R
5.      The keeping of horses or similar livestock animals on a parcel with less than three acres of land per animal. R R R R
6.      Buildings, structures and uses accessory to multi-family residential use including but not limited to a laundry center, community meeting room, resident mail room. R

3.4  Dimensional Standards

 

3.4.A       R-12 District

 

  R-12 District
  Permitted Uses Special Permit Uses
 
Minimum Lot Area 12,000 square feet 100,000 square feet
Maximum Number Of Lots

In A Subdivision

Developable Land / 12,000 SF Limited by minimum lot size
 
Minimum Lot Width 100 feet 150 feet
Minimum Lot Depth no requirement 200 feet
 
Minimum Front Yard Setback 30 feet 50 feet
Minimum Side Yard Setback 10 feet 50 feet, but not required for a side yard abutting navigable water
Minimum Rear Yard Setback 30 feet 50 feet, but not required for a rear yard abutting navigable water
 
Maximum Building Coverage (Note 2) 20% 20%
 
Maximum Bldg. Height 35 feet 35 feet

 

Notes – 1.       Section 8.3 of the Regulations may provide flexibility related to some of these dimensional standards.
2.       See Section 6.2 for requirements related to rear lots

 

 

 

3.4.B       R-8 District

 

  R-8 District
 
Minimum Lot Area 8,000 square feet
Maximum Number Of Lots

In A Subdivision

Developable Land / 8,000 SF
 
Minimum Lot Width 75 feet
 
Minimum Front Yard Setback 25 feet

Or

Average setback line observed by buildings on same side of street between two intersecting streets, whichever is lesser

Minimum Side Yard Setback 8 feet
Minimum Rear Yard Setback 25 feet

Or

25% of lot depth, whichever is lesser

 
Maximum Building Coverage (Note 2) 25%
 
Maximum Building Height 35 feet

 

Notes – 1.       Section 8.3 of the Regulations may provide flexibility related to some of these dimensional standards.
2.       See Section 6.2 for requirements related to rear lots

 

 

 

3.4.C        R-5.1 District

 

  R-5.1 District
 
Minimum Lot Area 5,000 square feet
Maximum Number Of Lots

In A Subdivision

Developable Land / 5,000 SF
 
Minimum Lot Width 50 feet
 
Minimum Front Yard Setback 25 feet

Or

Average setback line observed by buildings on same side of street between two intersecting streets, whichever is lesser

Minimum Side Yard Setback 4 feet
Minimum Rear Yard Setback 25 feet

Or

25% of lot depth, whichever is lesser

 

None required where rear yard

Abuts navigable waters

 
Maximum Building Coverage (Note 2) 25%
 
Maximum Building Height 35 feet

 

Notes – 1.       Section 8.3 of the Regulations may provide flexibility related to some of these dimensional standards.
2.       See Section 6.2 for requirements related to rear lots

 

 

3.4.D       R-5.2 District

 

  R-5.2 District
 
Minimum Lot Area 5,000 square feet per dwelling unit
Maximum Number Of Lots

In A Subdivision

Developable Land / 5,000 SF
 
Minimum Lot Width 50 feet
 
Minimum Front Yard Setback 25 feet

Or

Average setback line observed by buildings on same side of street between two intersecting streets, whichever is lesser

Minimum Side Yard Setback 4 feet
Minimum Rear Yard Setback 25 feet

Or

25% of lot depth, whichever is lesser

 
Maximum Building Coverage 25%
 
Maximum Building Height 35 feet

 

Notes – 1.       Section 8.3 of the Regulations may provide flexibility related to some of these dimensional standards.
2.       See Section 6.2 for requirements related to rear lots

 

 

 

 

3.4.E        R-M District

 

  RM District
 
Minimum Lot Area 40,000 square feet

Or

4,000 square feet per dwelling unit, whichever is greater

 

When calculating the minimum lot requirements of a project, no more than 30% of the lot area can be made up of regulated wetlands or steep (over 20%) slopes.

Maximum Number Of Lots

In A Subdivision

Determined by

minimum lot size

 
Minimum Lot Width 100 feet
 
Minimum Front Yard Setback 25 feet
Minimum Side Yard Setback 25 feet
Minimum Rear Yard Setback 25 feet
 
Maximum Building Coverage 25%
 
Maximum Building Height 35 feet

 

Notes – 1.       Section 8.3 of the Regulations may provide flexibility related to some of these dimensional standards.
Groton