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ADUs are allowed in Troy
Types:DetachedInternal

Accessory Dwelling Unit (ADU) Rules for Troy, NY

Is your property eligible for an ADU?

# of Properties
12,229
Owner-occupied
52%
Zoning districts
15
Avg Home Value
$252,350
Median Lot Size
0.13 acres
Avg Income
$67,094
Residential Types:
12,229 housing units
2-3 Family
82%
Apts (4+ units)
15%
Other
3%
Zoning Districts:
13,205 parcels · 15 districts
SF
33%(4,413)
TF
27%(3,605)
MF
12%(1,555)
MU-1
11%(1,444)
Other
17%(2,188)

ADU Rules

What can you build in Troy, NY?

Troy, NY follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.

Interior / Attached ADU Size Limits

  • –Maximum size of 800 sq ft of gross floor area

Detached ADU Size Limits

  • –Maximum size of 800 sq ft of gross floor area for a detached ADU; existing carriage houses at ordinance adoption are exempt.

Max Units

  • –1 ADU per single-family lot

Owner Occupancy

  • –Owner must occupy either the primary or ADU as residence, except MU-2/DMU.

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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Learn the key rules and size limits for ADUs

Is your property eligible for an ADU?

ADU rules in other New York municipalities

Rules change at the town line. Check the municipality your property is actually in.

Rensselaer County

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