Permitted uses
1. Permitted uses in a conservation development include:
a. Residential dwelling units as provided in this article and article IV, section 2, and permitted accessory uses customarily incidental and subordinate thereto; and
b. Open space, particularly forestland, which is set aside for conservation use or for preservation of valuable sensitive features or structures.
2. The forms of subdivision and land development projects available include:
a. All single-family dwellings;
b. All two-family dwellings;
c. All three-family dwellings;
d. All multi-family dwellings (four or more units);
e. Any combination of single-, two-, three- or multi-family dwellings.
3. Lot requirements.
a. Lot area: The minimum lot area in a conservation development subdivision or land development project is set forth in the table below. The minimum lot area shall not be reduced by use or dimensional variance of article XVII of the zoning ordinance.
b. Yard setbacks: The minimum front, side and rear yard setbacks for a lot in a conservation development subdivision or development project are set forth in the table below and may be varied only by meeting the standards for a dimensional variance as set forth in article XVII of the zoning ordinance.
c. Lot frontage, internal streets: The minimum lot frontage in a conservation development subdivision or land development project is set forth in the table below. If requested or agreed to by the applicant, the planning board is authorized to reduce the lot frontage of newly created lots, on internal streets, to a minimum of 20 feet, if doing so achieves the purposes of this ordinance and those set forth in the land development and subdivision regulations.
d. Lot frontage, existing streets: Any primary structure constructed on a lot with frontage on an existing public street or approved private street that meets the Standards for unaccepted streets (zoning ordinance article VI, section 8) shall conform to the required lot frontage dimensional standards of the underlying zoning district. Lot frontage may be reduced by meeting the standards for a dimensional variance as set forth in article XVII of the zoning ordinance.
e. Impervious lot coverage: The minimum impervious lot coverage in a conservation development subdivision or land development project is set forth in the table below. The minimum impervious lot coverage shall not be reduced by use or dimensional variance of article XVII of the zoning ordinance.
f. Where multi-family conservation developments are permitted, the additional requirements set forth in section 6 are applicable.
g. Where a combination of single-, two-, three- or multi-family dwellings are proposed, the additional requirements set forth in section 7 are applicable.
h. For developments of three lots or less proceeding under this article, the permitting authority may permit the use of common driveways and frontage on unpaved, privately maintained roads constructed to modified town design standards (see Code of Ordinances, appendix B, section 23-42) if at least one lot meets the lot frontage dimensional standard of the underlying zoning district.
Single-family dwelling Two- and three-family dwelling Multi-family structure or apartment house (4 or more units), with public water and sewer Lot Area R-30 Zone without public water or sewer 15,000 sq. feet minimum 20,000 sq. feet minimum Not applicable R-30 Zone
with public water or sewer10,000 sq. feet 20,000 sq. feet minimum 20,000 plus 7,500 for each unit above 2 units, plus 3,750 for each additional bedroom over 2 bedrooms per unit maximum R-40 Zone
without public water20,000 sq. feet Not applicable Not applicable R-40 Zone with public water 15,000 sq. feet Not applicable Not applicable R-60 Zone
without public water or sewer30,000 sq. feet 30,000 sq. feet Not applicable R-60 Zone with public water or sewer 25,000 sq. feet 30,000 sq. feet 30,0000 sf. plus 7,500 sf for each unit above 2 units, plus 3,750 sf for each additional bedroom over 2 bedrooms per unit R-120 Zone 30,000 sq feet Not applicable Not applicable Lot Frontage—Internal Streets R-30 75 feet 75 feet 75 feet R-40 75 feet Not applicable Not applicable R-60 87.5 feet 87.5 feet 87.5 feet R-120 100 feet Not applicable Not applicable Lot Frontage - Existing Street—All Zones See requirements for the underlying zoning district. See requirements for the underlying zoning district. See requirements for the underlying zoning district. Lot Width—All Zoning Districts Not applicable Not applicable Not applicable Front Yard Setback Internal Streets 30 feet 30 feet 10 feet Existing Streets See requirements for the underlying zoning district. See requirements for the underlying zoning district. 20 from any other structure or the no cut buffer Rear Yard Setback 30 feet 30 feet 20 feet from any other structure or the no cut buffer Side Yard Setback 20 feet 20 feet 20 feet from any other structure or the no cut buffer Total Impervious Coverage Limit 20% maximum 20% maximum 25% maximum Structure Height—All Zoning Districts Maximum as per Zoning Ordinance Article V
4. Water and wastewater.
a. Where public water and sewer are not available, individual private wells and OWTS are to be located on the house lots they serve. Shared or public wells are not permitted.
b. Cisterns, or other alternative approved by the Tiverton Fire Department, for fire protection are required for any subdivision where public water is not available.
(Ord. No. 2024-0008, 6-24-24)