ADU · Monroe County
Can you build an ADU in Chili, NY?
Town of Chili has 9 districts. All districts prohibit ADUs. Check your address to confirm the district that applies to your parcel:
What the Chili 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 |
|---|---|---|---|---|
| Single-Family Residential (R-1-6) | 0.1377 ac | 40 / 8 / 25 ft | 35 ft | No |
| Residential Single-Family (R-1-12) | 0.2755 ac | 60 / 10 / 30 ft | 35 ft | No |
| Residential Single-Family (R-1-15) | 0.3444 ac | 60 / 10 / 40 ft | 35 ft | No |
| Residential Single-Family (R-1-20) | 0.4591 ac | 60 / 10 / 60 ft | 35 ft | No |
| Residential Multiple-Family (RM) — 36,000 sf minimum SITE; yield set by 8 du/gross acre, 12 units per building, 6 in a row | 0.8264 ac | 60 / 40 / 30 ft | 35 ft | No |
| Rural Agricultural (RA-1) | 1 ac | 100 / 30 / 50 ft | 35 ft | No |
| Rural Agricultural (RA-10) | 10 ac | 100 / 50 / 50 ft | 35 ft | No |
| Agricultural Conservation (AC) — single-family figures; farms take a separate 10-acre column | 2 ac | 75 / 50 / 50 ft | 35 ft | No |
| Planned Residential Development (PRD) — 50-acre qualifying tract; per-lot 10,000-20,000 sf and all setbacks set by Planning Board site plan approval | 50 ac | — | — | No |
ADUs vs. short-term rentals in Chili
No local short-term-rental law on record - which is not the same as permission for Town of Chili. The Town of Chili has NO short-term-rental provision. Zoning Ch. 500 contains no short-term rental, transient occupancy, tourist home or bed-and-breakfast use, and the Town Code's full chapter list carries no rental chapter and no rental-registration chapter — Ch. 205 Buildings and Property Maintenance is a maintenance and unsafe-structures chapter, not a rental-licensing one. The code is unusually fresh (eCode360 shows it current through 06-10-2026 with New Laws (0)), so this is the state of the law as of this ingest rather than a stale snapshot. Absence is NOT permission: every Chili residential district is written as a closed permitted-use list plus a closed special-permit list, so a transient-occupancy use that appears on neither list is not automatically allowed. Recorded unknown rather than permitted for that reason. New York State's 2025 STR registry (Ch. 99 of the Laws of 2025) separately requires every host statewide to register. Confirm with the Building Department at (585) 889-6143. 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 minimum0.1377–50 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityRG&E territory.
- Building dept(585) 889-6143
- Last reviewed2026-08-11
ADU FAQ — Chili, NY
Are ADUs allowed in Chili, NY?
Town of Chili has 9 districts. All districts prohibit ADUs. Check your address with the free ADU checker, or confirm with the building department at (585) 889-6143.
Do I need a special permit for an ADU in Chili?
No. No district in Town of Chili permits an ADU, so there is no permit to apply for. Codes change, so verify with the building department at (585) 889-6143 before ruling it out.
Can I use an ADU as a short-term rental in Chili?
No local short-term-rental law on record - which is not the same as permission for Town of Chili. 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 Chili
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 Chili, priced by size.
More on Chili: Full zoning for new construction · ADU build cost · House build cost · All Monroe County towns
ADU information for Town of Chili is compiled from the municipal code (last reviewed 2026-08-11) 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) 889-6143 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.