ADU · Greene County
Can you build an ADU in Athens, NY?
Village of Athens has 8 districts. 5 districts prohibit ADUs, 3 require a special-use permit. Check your address to confirm the district that applies to your parcel:
What the Athens 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 |
|---|---|---|---|---|
| Open Space Conservation District | — | — | 25 ft | No |
| Residential Low-Density District | 3 ac | 20 / 20 / 20 ft | 30 ft | Special permit |
| Recreational Residential District | 3 ac | 20 / 10 / 20 ft | 30 ft | Special permit |
| Residential Medium-Density District | 0.32 ac | 20 / 10 / 20 ft | 30 ft | Special permit |
| Commercial Residential District | — | — | 35 ft | No |
| Commercial District | 0.46 ac | - / 15 / 15 ft | 35 ft | No |
| Mixed Use Waterfront District | 0.46 ac | 25 / 25 / 25 ft | 35 ft | No |
| Waterfront District | 0.32 ac | 10 / 25 / 25 ft | 25 ft | No |
ADUs vs. short-term rentals in Athens
Short-term rentals allowed with local rules for Village of Athens. Village of Athens adopted Local Law No. 3-2020 (April 8, 2020), requiring annual STR permits renewable by January 31 each year; permits are non-transferable and expire upon change of ownership; STRs allowed in all zoning districts subject to registration. 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 minimum0.32–3 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCentral Hudson territory.
- Building dept(518) 945-0601
- Last reviewed2026-08-16
ADU FAQ — Athens, NY
Are ADUs allowed in Athens, NY?
Village of Athens has 8 districts. 5 districts prohibit ADUs, 3 require a special-use permit. Check your address with the free ADU checker, or confirm with the building department at (518) 945-0601.
Do I need a special permit for an ADU in Athens?
It depends on the district: 3 of 8 require a special-use permit, the rest do not. Check the district that applies to your parcel before you design.
Can I use an ADU as a short-term rental in Athens?
Short-term rentals allowed with local rules for Village of Athens. 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 Athens
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $195k–255k 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 Athens, priced by size.
More on Athens: Full zoning for new construction · ADU build cost · House build cost · All Greene County towns
ADU information for Village of Athens is compiled from the municipal code (last reviewed 2026-08-16) 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 (518) 945-0601 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.