ADU · Sullivan County
Can you build an ADU in Lumberland, NY?
Town of Lumberland has 7 districts. All districts allow ADUs with occupancy restrictions. Check your address to confirm the district that applies to your parcel:
What the Lumberland 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 |
|---|---|---|---|---|
| River Hamlet District | 3 ac | 50 / 35 / 50 ft | 35 ft | Occupancy restricted |
| Rural Residential District | 5 ac | 50 / 35 / 50 ft | 35 ft | Occupancy restricted |
| Hillside District | 5 ac | 50 / 50 / 50 ft | 35 ft | Occupancy restricted |
| Glen Spey District | 3 ac | 50 / 35 / 50 ft | 35 ft | Occupancy restricted |
| Mohican Lake District | 2 ac | 50 / 35 / 50 ft | 35 ft | Occupancy restricted |
| Mongaup River Valley District | 5 ac | 50 / 35 / 50 ft | 35 ft | Occupancy restricted |
| Black Forest District | 5 ac | 50 / 35 / 50 ft | 35 ft | Occupancy restricted |
ADUs vs. short-term rentals in Lumberland
No local short-term-rental law on record - which is not the same as permission for Town of Lumberland. No local STR ordinance found as of Jun 2026. As of late 2024 the Town of Lumberland was still gathering information on STRs and had not passed any regulations. 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 minimum3–5 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityNYSEG territory.
- Building dept(845) 856-8600
- Last reviewed2026-08-16
ADU FAQ — Lumberland, NY
Are ADUs allowed in Lumberland, NY?
Town of Lumberland has 7 districts. All districts allow ADUs with occupancy restrictions. Check your address with the free ADU checker, or confirm with the building department at (845) 856-8600.
Do I need a special permit for an ADU in Lumberland?
No district in Town of Lumberland requires a special-use permit for an ADU - 7 districts allow 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 Lumberland?
No local short-term-rental law on record - which is not the same as permission for Town of Lumberland. 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 Lumberland
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $190k–250k 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 Lumberland, priced by size.
More on Lumberland: Full zoning for new construction · ADU build cost · House build cost · All Sullivan County towns
ADU information for Town of Lumberland 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 (845) 856-8600 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.