ADU · Monroe County
Can you build an ADU in Spencerport, NY?
Village of Spencerport has 1 district. The only district allows ADUs with occupancy restrictions. Check your address to confirm the district that applies to your parcel:
What the Spencerport code says
Spencerport's code has an in-law apartment provision, § 340-9I, meant to let related parties of different generations live together, so long as the arrangement is not outweighed by an adverse impact on the community.
Conditions the code attaches:
- Whether the unit may be rented to someone who is not related is not confirmed.
- The weighing of community impact points to a discretionary review, but whether a special permit is required is not confirmed.
- Any floor-area cap, parking requirement, and whether the unit may be detached are not confirmed.
- Multi-unit residential dwellings of not more than two storeys, exclusive of habitable basement space, are permitted subject to § 340-16.
- Building Department: (585) 352-4790.
What the Spencerport code indicates by district
The table below shows how each district treats ADUs, alongside the lot and setback standards that govern a second unit. District boundaries and conditions vary, so treat this as a starting point and confirm the district that applies to your parcel.
| District | Min lot | Setbacks F / S / R | Max height | ADU |
|---|---|---|---|---|
| A District (Residential) | 0.28 ac | 50 / 6.4 / 7.5 ft | 35 ft | Occupancy restricted |
A District (Residential) - Side and rear setbacks grow with the lot: each side setback is 8% of the lot width measured along the street line, and each rear setback is 5% of the lot depth. The figures shown are for a lot at the 80 ft wide and 150 ft deep minimum.
- A two- or three-family dwelling needs Zoning Board approval and 6,500 sq ft per dwelling unit, with floor areas of 500 sq ft studio, 650 one-bedroom, 800 two-bedroom and 1,000 three-bedroom.
- A multiple-unit dwelling takes 50 ft front, 25 ft side, 40 ft rear, 3,500 sq ft per unit, two storeys, one three-bedroom unit per 8 units, and 60 ft between buildings front to front.
- The 25% building cap includes accessory structures. The separate 25% total cap counts impervious surfaces and improvements, driveway included, about 3,000 sq ft on the 12,000 sq ft minimum lot.
- Where buildings on both sides within 100 ft stand closer to the street than 50 ft, the closer setback may be applied; on a corner lot the front setback is measured along the narrower frontage.
- A through lot owes the front setback to each frontage unless the Code Enforcement Officer approves otherwise, and each lot is allowed one driveway.
- Under § 340-13 the minimum building area is 800 sq ft on the first floor of a one-and-one-half-storey house and 625 sq ft on each floor of a two-storey.
ADUs vs. short-term rentals in Spencerport
No local short-term-rental law on record - which is not the same as permission for Village of Spencerport. The Village of Spencerport has no local short-term rental law, and that is not the same as permission. Confirm with the Building Department before counting on the use. These are separate questions from whether you can build an ADU — a unit you're allowed to add isn't automatically one you're allowed to rent nightly, so check both.
Good to know
- Residential lot minimum0.28 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityVillage of Spencerport (municipal electric) territory.
- Zoning codeecode360.com/36639738
- Building dept(585) 352-4790
ADU FAQ — Spencerport, NY
Are ADUs allowed in Spencerport, NY?
Village of Spencerport has 1 district. The only district allows ADUs with occupancy restrictions. Check your address with the free ADU checker, or confirm with the building department at (585) 352-4790.
Do I need a special permit for an ADU in Spencerport?
No district in Village of Spencerport requires a special-use permit for an ADU - 1 district allows ADUs with occupancy restrictions. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Spencerport?
No local short-term-rental law on record - which is not the same as permission for Village of Spencerport. ADU occupancy and short-term-rental rules are separate: an ADU you can build isn't automatically one you can rent nightly. Confirm both before you count on STR income.
What an ADU costs to build in Spencerport
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $200k–260k at a standard finish, and the per-square-foot rate comes in above a full house because the kitchen, bath, panel and heating plant cost the same either way. See the full cost to build an ADU in Spencerport, priced by size.
How we know this
- Sections analyzed
- Ch. 340 § 340-9I In-law apartments (purpose clause only); § 340-16 Special use regulations
- Districts confirmed
- 1 of 1 — every mapped district.
- Last reviewed
- Not covered here
- Overlay districts, the zoning map, and any conditions attached to an individual parcel. Size limits and owner-occupancy terms sit in the code section above, not in this summary.
More on Spencerport: Full zoning for new construction · ADU build cost · House build cost · ADU rules across Monroe County · All Monroe County towns
ADU information for Village of Spencerport is compiled from the municipal code (last reviewed 2026-08-13) and provided for decision-support only — not legal or architectural advice. ADU eligibility, size, owner-occupancy and permit conditions vary by district and often carry exceptions; verify with the building department at (585) 352-4790 before relying on any answer. Source: the Offsite / Aldo zoning dataset.