Can you build an ADU in Tuckahoe, NY?

Residence A-10 - The figures shown apply to a lot created after July 1, 1999. A lot that existed on or before that date keeps the older standards: 10,000 square feet of lot area, 80 ft of lot width, a 25 ft front yard, a 15 ft side yard and a 30 ft rear yard.

• On every lot the length of the street line must be at least 80% of the lot width (§ 4-1.3).
• On a corner lot both side yards must be at least 25 ft, though the Planning Board may adopt less restrictive side yard rules based on the build-to line along the street (§ 4-1.4.2).
• A place of worship or a school may reach 42 ft and three stories, but must stand 50 ft from any street line and 50 ft, or twice its height if that is greater, from any property line (§ 4-1.1.3).
• An accessory building may come no closer than 5 1/2 ft to a side or rear line and must stand at least 10 ft from the principal building.
• Cornices and cantilevered roofs may project 2 ft into a required yard, and paved terraces, steps and walks may come no closer than 15 ft to a street line or 4 ft to a property line (§ 4-1.4.4).
• Where a lot falls in two districts the more restrictive district governs, unless the Zoning Board of Appeals grants a special permit to average the area and bulk restrictions (§ 5-1.5).

Residence A-5 - The figures shown apply to a lot created after July 1, 1999. A lot that existed on or before that date keeps the older standards: 5,000 square feet of lot area, 50 ft of lot width, a 25 ft front yard, a 9 ft side yard and a 25 ft rear yard.

• The district's own sections set coverage at 40% and the floor area ratio at 0.5, and those govern over the 35% and 0.45 the bulk schedule prints (§ 4-2.5, § 4-2.6).
• On every lot the length of the street line must be at least 80% of the lot width (§ 4-2.3).
• On a corner lot both side yards must be at least 25 ft, though the Planning Board may adopt less restrictive side yard rules based on the build-to line along the street (§ 4-2.4.2).
• A place of worship or a school may reach 42 ft and three stories, but must stand 50 ft from any street line and 50 ft, or twice its height if that is greater, from any property line (§ 4-1.1.3).
• An accessory building may come no closer than 5 1/2 ft to a side or rear line and must stand at least 10 ft from the principal building.
• Where a lot falls in two districts the more restrictive district governs, unless the Zoning Board of Appeals grants a special permit to average the area and bulk restrictions (§ 5-1.5).

Apartment 3 - A side yard must meet the more restrictive of 12 ft or half the height of the wall facing the side lot line, so a taller building needs more.

• A townhouse, individual or clustered, instead needs a flat 15 ft side yard.
• Senior citizen housing takes a 15 ft rear yard and 40% principal building coverage (§ 4-4.4.3).
• Senior citizen housing must be designed for people 55 years of age or older (§ 4-4.6).
• An existing nonresidential building reused as apartments or as senior citizen housing may keep a height of up to 100 ft and six stories, as long as its height and bulk are not increased (§ 4-4.2.1).
• A place of worship or a school may reach 42 ft and three stories, but must stand 50 ft from any street line and 50 ft, or twice its height if that is greater, from any property line (§ 4-1.1.3).
• Accessory buildings may cover a further 10% of the lot, and the Zoning Board of Appeals may allow another 10% for garages where parking under the principal building is impractical.

Residence B - The figures shown apply to a lot created after July 1, 1999 and are the same for a one-family and a two-family house. A lot that existed on or before that date keeps the older standards, which split by use.

• Under the older standards a one-family house needs 5,000 square feet and 50 ft of width and a two-family house 7,500 square feet and 80 ft, both with a 25 ft front, 9 ft side and 25 ft rear yard.
• A landscaped buffer 5 ft wide is required inside the side and rear yards where they abut a property line, and it may hold no impervious surface for parking or driveways (§ 4-3.4.6).
• On every lot the length of the street line must be at least 80% of the lot width (§ 4-3.3).
• The district's own section sets coverage at 40%, and that governs over the 35% the bulk schedule prints (§ 4-3.5).
• A place of worship or a school may reach 42 ft and three stories, but must stand 50 ft from any street line and 50 ft, or twice its height if that is greater, from any property line (§ 4-1.1.3).
• An accessory building may come no closer than 5 1/2 ft to a side or rear line, must stand at least 10 ft from the principal building, and may hold no living quarters (§ 4-3.1.3).

Business - No front, side or rear yard is required, but a side or rear yard that is provided must be at least 6 ft.

• Height is capped at 3 stories plus a basement, and at 42 ft above curb level.

Business/Residential - No front, side or rear yard is required, but any side or rear yard that is provided must be at least 6 ft, and a yard of at least 10 ft is required along any lot line that borders a residential district.

• Residential units come only at or above the second story, by special permit, with their own entrance from the street, and may not share a story with a business use.
• Where the uses wholly within the district are at least half residential by gross floor area, the floor area ratio rises to 1.2 (§ 4-5.3.4).
• No vehicle may be parked or stored in that 10 ft yard unless a buffer of trees or plants approved by the Planning Board is provided (§ 4-5.3.2).
• A building constructed or occupied only for business use follows the Business District's use and yard requirements instead (§ 4-5.2).
• The 42 ft height is measured above the average grade of the street line at the front of the property (§ 4-5.3.3).
• A screen of shrubbery at least 5 ft wide and 3 ft high at planting, half of it evergreen, is required in a rear or side yard that adjoins property zoned for residence purposes (§ 5-1.4).

General Commercial - Side and rear yards rise to 50 ft wherever the site is within 50 ft of a residential district boundary.

• The front yard is measured from the curbline, sidewalk included, and grows by an additional 10 ft for any building over 40 ft tall.
• Neither the side nor the rear yard rule applies to a site fully separated from other districts by a street, river or rail line.

Industry - Buildings must sit an average of at least 20 ft, and never closer than 10 ft, from every site boundary, and at least 100 ft from a residential district boundary (§ 4-7.5(d)).

• The Planning Board may reduce the 100 ft to 50 ft on an environmental or character finding.
• Neither figure applies to a site fully separated from other districts by a street, river or main rail line.

Unzoned - This is not one of the village's zoning districts. It covers parcels outside the mapped districts.