ADUs are allowed in City Of IthacaTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for City Of Ithaca, NY
Is your property eligible for an ADU?
# of Properties
4,567
Owner-occupied
71%
Zoning districts
43
Avg Home Value
$591,685
Median Lot Size
0.14 acres
Avg Income
$70,091
Residential Types:
5,360 housing units
Single Family
49%
2-3 Family
18%
Apts (4+ units)
33%
Zoning Districts:
5,463 parcels · 43 districts
R-2B
34%(1,836)
R-2A
12%(666)
R-1B
10%(571)
R-1A
10%(548)
Other
34%(1,842)
ADU Rules
What can you build in City Of Ithaca, NY?
City Of Ithaca, NY follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size is 40% of the principal dwelling’s floor area.
Detached ADU Size Limits
- –Maximum size of 800 sq ft; no maximum if converting an existing accessory structure
Max Units
- –Max 1 ADU per parcel
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.
Tompkins County