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 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) — Spencerport's single residential district, so every house in the village is answered from this one row. 12,000 sf (0.28 acres) with a minimum lot width of 80 ft and a MINIMUM LOT DEPTH OF 150 FT, and a maximum residential building height of 35 ft. THE SIDE AND REAR SETBACKS ARE BOTH PERCENTAGE FORMULAS, WHICH IS UNIQUE IN THIS COUNTY — every other percentage setback in the Monroe dataset keys only the side yard. § 340-12B(1) sets the front building line setback at a flat 50 ft to the street line, then provides that EACH SIDE SETBACK SHALL EQUAL 8% OF THE WIDTH OF THE LOT MEASURED ALONG THE STREET LINE and EACH REAR SETBACK SHALL EQUAL 5% OF THE DEPTH OF THE LOT. Evaluated at the district's own minimum dimensions that gives 6.4 FT per side (8% of 80 ft) and 7.5 FT at the rear (5% of 150 ft), which are the recorded figures. THESE GROW ON A LARGER LOT, unlike Riga's formula which keys to the required rather than the actual dimension: a 120 ft wide lot owes 9.6 ft per side, and a 200 ft deep lot owes 10 ft at the rear. Recompute both from the actual parcel rather than using the recorded values on anything above the minimum. MAXIMUM LOT COVERAGE IS NULL BY DELIBERATE CHOICE, NOT BECAUSE NONE IS STATED. § 340-11B caps each residential lot at 25% of its area covered by IMPERVIOUS SURFACES AND/OR IMPROVEMENTS, expressly including but not limited to the residential building — so driveways, parking and patios consume it alongside the house. Following the Penfield and Hamlin precedent in this county, a pavement-inclusive cap is not comparable to a building-coverage percentage and is documented here rather than recorded in the field. THE 25% IMPERVIOUS CAP IS NONETHELESS THE BINDING SITE CONSTRAINT and should be modelled directly: on the 12,000 sf minimum it allows about 3,000 sf of total impervious area for house, garage, drive and walks combined. § 340-11A adds a rule with no equivalent elsewhere in the dataset — NO MORE THAN ONE DRIVEWAY per residential lot. CORNER AND THROUGH LOTS ARE HANDLED EXPLICITLY: on a corner lot the required front setback is measured along the street on which the lot has the NARROWER frontage, and where frontages are equal the GREATER of the two required front setbacks applies; a through lot fronting two parallel streets owes the front setback to EACH frontage unless the Code Enforcement Officer approves otherwise. The chapter's lot and yard requirements were amended 12-3-2025 by L.L. No. 5-2025, so these are current figures. | 0.2755 ac | 50 / 6.4 / 7.5 ft | 35 ft | Occupancy restricted |
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. NO SHORT-TERM RENTAL PROVISION EXISTS IN SPENCERPORT. Article II A Districts: Residential (58,846 characters, covering the whole residential district including its permitted uses, special use regulations and planned residential development section) returns nothing for 'short-term rental', 'tourist home' or 'bed-and-breakfast' in either hyphenation, and all 52 chapters of the Village Code were enumerated from the eCode360 table of contents and swept for a rental, lodging, licensing, registration or occupancy chapter — none exists. That whole-code step is mandatory in this county: Mendon hides a full STR operating-permit regime in Ch. 208, Gates in Ch. 148, and the Village of Pittsford requires both a zoning permission under its Article 29 and a separate Ch. 154 rental property permit. Spencerport's negative is therefore tested rather than assumed. THE VILLAGE HAS NO COMMERCIAL LODGING USE IN ITS RESIDENTIAL DISTRICT AT ALL — no bed-and-breakfast, no tourist home — which puts it with Riga, Wheatland and Scottsville at the restrictive end of the county and apart from Churchville, Honeoye Falls, Brockport and the Village of Pittsford, all of which permit a bed-and-breakfast somewhere. ABSENCE IS NOT PERMISSION: § 340-9 states the A District's permitted uses as a closed list (amended 9-1-2021 by L.L. No. 3-2021), so an unlisted whole-house short-term rental is not authorised by silence. strStatus is recorded 'unknown' rather than 'prohibited' only because that reading has not been confirmed with the Village. NOTE THAT SPENCERPORT'S ZONING CHAPTER IS ACTIVELY MAINTAINED — the lot and yard requirements were amended as recently as 12-3-2025 by L.L. No. 5-2025 — so this is a current code rather than a stale one, and a future STR amendment is plausible. New York State's 2025 statewide short-term rental registry (Ch. 99 of the Laws of 2025) obliges every host to register regardless of local law. Confirm with the Building Department at (585) 352-4790. 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 minimum0.2755 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityVillage of Spencerport (municipal electric) territory.
- Building dept(585) 352-4790
- Last reviewed2026-08-13
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.
More on Spencerport: Full zoning for new construction · ADU build cost · House build cost · 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: Offsite / Aldo zoning dataset, municipalData.js.