ADU · Albany County
Can you build an ADU in Bethlehem, NY?
Town of Bethlehem has 17 districts. 11 districts allow ADUs with occupancy restrictions, 4 do not. 2 districts have incomplete data - verify with the building department at (518) 439-4955. Check your address to confirm the district that applies to your parcel:
What the Bethlehem 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 |
|---|---|---|---|---|
| GENERAL COMMERCIAL | 1 ac | 100 / 40 / 50 ft | 35 ft | No |
| COMMERCIAL HAMLET | 0.23 ac | 30 / 10 / 40 ft | 35 ft | Occupancy restricted |
| CORE RESIDENTIAL | 0.167 ac | 25 / 8 / 25 ft | 30 ft | Occupancy restricted |
| DELAWARE AVE HAMLET OVERLAY | — | — | — | — |
| HAMLET | 0.115 ac | 10 / 5 / 40 ft | 35 ft | Occupancy restricted |
| HEAVY INDUSTRIAL | 5 ac | 100 / 25 / 50 ft | 60 ft | No |
| MIXED ECONOMIC DEVELOPMENT | — | — | — | No |
| MULTI-FAMILY | 0.195 ac | 35 / 16 / 25 ft | 35 ft | No |
| PLANNED DEVELOPMENT DISTRICT | — | — | — | — |
| RURAL | — | 40 / 15 / 40 ft | 35 ft | Occupancy restricted |
| RESIDENTIAL A | 0.333 ac | 35 / 10 / 25 ft | 30 ft | Occupancy restricted |
| RESIDENTIAL B | 0.195 ac | 25 / 8 / 25 ft | 30 ft | Occupancy restricted |
| RESIDENTIAL C | 0.195 ac | 30 / 8 / 25 ft | 30 ft | Occupancy restricted |
| RURAL HAMLET | 0.172 ac | 30 / 10 / 40 ft | 35 ft | Occupancy restricted |
| RURAL LIGHT INDUSTRIAL | 1 ac | 50 / 25 / 50 ft | 45 ft | Occupancy restricted |
| RESIDENTIAL LARGE LOT | 2 ac | 50 / 25 / 50 ft | 35 ft | Occupancy restricted |
| RIVERFRONT RURAL | 5 ac | 40 / 15 / 40 ft | 35 ft | Occupancy restricted |
ADUs vs. short-term rentals in Bethlehem
Short-term-rental status not confirmed for Town of Bethlehem. BethlehemForward zoning update includes STR provisions but had not been formally adopted as of Jun 2026; Town Board adoption was projected for Spring 2026. Status pending final vote. 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 minimum0.115–5 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityNational Grid territory.
- Building dept(518) 439-4955
- Last reviewed2026-07-08
ADU FAQ — Bethlehem, NY
Are ADUs allowed in Bethlehem, NY?
Town of Bethlehem has 17 districts. 11 districts allow ADUs with occupancy restrictions, 4 do not. 2 districts have incomplete data - verify with the building department at (518) 439-4955. Check your address with the free ADU checker.
Do I need a special permit for an ADU in Bethlehem?
No district in Town of Bethlehem requires a special-use permit for an ADU - 11 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 Bethlehem?
Short-term-rental status not confirmed for Town of Bethlehem. 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 Bethlehem
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $195k–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 Bethlehem, priced by size.
More on Bethlehem: Full zoning for new construction · ADU build cost · House build cost · All Albany County towns
ADU information for Town of Bethlehem is compiled from the municipal code (last reviewed 2026-07-08) 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) 439-4955 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.