ADUs are allowed in Town Of OssiningTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Town Of Ossining, NY
Is your property eligible for an ADU?
# of Properties
2,095
Owner-occupied
86%
Zoning districts
21
Avg Home Value
$0
Median Lot Size
0.34 acres
Avg Income
$152,089
Residential Types:
2,095 housing units
2-3 Family
68%
Apts (4+ units)
7%
Other
25%
Zoning Districts:
2,203 parcels · 21 districts
MF
28%(611)
R-15
19%(429)
R-20
17%(378)
R-30
13%(296)
Other
22%(489)
ADU Rules
What can you build in Town Of Ossining, NY?
Town Of Ossining, NY follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Special Permit
- –Detached ADU: Special Permit
Interior / Attached ADU Size Limits
- –Maximum size of 800 sq ft
- –Maximum size of 33% of the principal dwelling's habitable floor area
Detached ADU Size Limits
- –Maximum size of 800 sq ft
- –Maximum size of 33% of the principal building’s habitable floor area
Max Units
- –1 accessory apartment per single-family lot; max 2 dwelling units per single-family lot
Owner Occupancy
- –Owner must occupy either the principal or ADU
Parking
- –Adequate off-street parking per §200-29 to prevent parking in public streets by ADU residents; no fixed minimum or maximum; garage space cannot be converted to an ADU unless required parking on the lot can be provided; reviewing authority may waive up to 50% of any required parking via a special permit.
Rental Restrictions
- –Minimum term: 3+ months; short-term rentals under 3 months prohibited; permit required to rent an accessory apartment.
- –Owner-occupied rule: one unit must be owner’s primary residence; owner’s dwelling cannot be rented; boarding/rooming prohibited in both units.
ADU State Law
What can you build in New York?
- –New York does not have a statewide ADU law; all ADU rules are set by individual municipalities.
- –ADUs may also be referenced as "accessory apartments" or "accessory living units," and definitions are not standardized statewide.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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ADU rules in other New York municipalities
Rules change at the town line. Check the municipality your property is actually in.
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