ADU · Orange County
Can you build an ADU in Walden, NY?
Village of Walden has 16 districts. 12 districts allow ADUs with occupancy restrictions, 4 do not. Check your address to confirm the district that applies to your parcel:
What the Walden 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 |
|---|---|---|---|---|
| Residential 1&2 Family | 0.344 ac | 40 / 20 / 40 ft | 35 ft | Occupancy restricted |
| Residential 1 Family | 0.275 ac | 35 / 15 / 35 ft | 35 ft | Occupancy restricted |
| Residential 1 Family | 0.184 ac | 30 / 10 / 30 ft | 35 ft | Occupancy restricted |
| Residential 1 Family | 0.115 ac | 25 / 10 / 25 ft | 35 ft | Occupancy restricted |
| Residential 1&2 & Multifamily | 0.115 ac | 25 / 10 / 25 ft | 35 ft | Occupancy restricted |
| Multifamily Residential | 0.115 ac | 25 / 10 / 25 ft | 35 ft | Occupancy restricted |
| Multifamily Residential | 0.172 ac | 20 / 15 / 15 ft | 35 ft | Occupancy restricted |
| Mobile Home Court | 0.275 ac | 35 / 15 / 35 ft | 35 ft | Occupancy restricted |
| Townhouse | 2 ac | — | 35 ft | No |
| Neighborhood Business | 0.23 ac | 50 / 20 / 30 ft | 35 ft | No |
| Village Business | — | 0 / 12 / 20 ft | 35 ft | No |
| Central Business | — | 0 / 12 / 20 ft | 35 ft | No |
| Service Commercial | 0.23 ac | 50 / 10 / 30 ft | 35 ft | Occupancy restricted |
| Office Light Industry | 0.918 ac | 50 / 30 / 50 ft | 35 ft | Occupancy restricted |
| Village Industry | 0.115 ac | 0 / 12 / 20 ft | 35 ft | Occupancy restricted |
| Mixed Use | — | 0 / 0 / 5 ft | 35 ft | Occupancy restricted |
ADUs vs. short-term rentals in Walden
Short-term rentals allowed with local rules for Village of Walden. Local Law No. 5 of 2022 added Art. XIII 'Short Term Rentals' to Ch.305 Zoning; requires an in-county resident agent and 24-hour advance notice per rental. 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 minimum0.115–0.344 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCentral Hudson territory.
- Building dept(845) 778-2177
- Last reviewed2026-07-12
ADU FAQ — Walden, NY
Are ADUs allowed in Walden, NY?
Village of Walden has 16 districts. 12 districts allow ADUs with occupancy restrictions, 4 do not. Check your address with the free ADU checker, or confirm with the building department at (845) 778-2177.
Do I need a special permit for an ADU in Walden?
No district in Village of Walden requires a special-use permit for an ADU - 12 districts allow ADUs with occupancy restrictions, 4 do not. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Walden?
Short-term rentals allowed with local rules for Village of Walden. 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 Walden
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $205k–270k 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 Walden, priced by size.
More on Walden: Full zoning for new construction · ADU build cost · House build cost · All Orange County towns
ADU information for Village of Walden is compiled from the municipal code (last reviewed 2026-07-12) 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 (845) 778-2177 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.