ADU · Columbia County
Can you build an ADU in New Lebanon, NY?
Town of New Lebanon has 8 districts. 4 districts allow ADUs, 2 do not, 2 require a special-use permit. Check your address to confirm the district that applies to your parcel:
What the New Lebanon code says
An ADU is permitted by right in RA-5, RA-2, RA-1 and C-R, needs a special use permit in C and CC, and is barred in C-Rec and C-I. On a parcel under twice the district minimum lot size it needs site plan review, unless it is wholly within the main building's existing footprint.
Conditions the code attaches:
- Its living area may not exceed 50% of the principal dwelling's living area or 800 sq ft, whichever is less.
- A short-term rental that includes an ADU is not permitted for three years from the date its final certificate of occupancy was issued.
- There is no owner-occupancy, kinship or age requirement.
- On a lot of 4,000 sq ft or more it may cover no more than 15% of the lot area, unless it is built wholly within an existing legal accessory structure that already exceeds that.
- It does not count toward the lot's density, and it may go on a lot below the district minimum lot size if it creates or increases no other nonconformity.
- Only one ADU is allowed per lot; it may be within, attached to or detached from the dwelling, but one built off site must stay detached.
What the New Lebanon 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 |
|---|---|---|---|---|
| Rural Agricultural (5-acre) | 5 ac | 75 / 75 / 75 ft | 35 ft | As of right |
| Rural Agricultural (2-acre) | 2 ac | 75 / 50 / 50 ft | 35 ft | As of right |
| Rural Agricultural (1-acre) | 1 ac | 75 / 35 / 50 ft | 35 ft | As of right |
| Commercial | 0.69 ac | 75 / 20 / 25 ft | 40 ft | Special permit |
| Commercial Corridor | 0.69 ac | 50 / 15 / 25 ft | 50 ft | Special permit |
| Commercial Recreation | 0.69 ac | 20 / 25 / 25 ft | 40 ft | No |
| Commercial Industrial | 0.69 ac | 75 / 50 / 50 ft | 40 ft | No |
| Commercial Residential | 1 ac | 75 / 35 / 50 ft | 35 ft | As of right |
Rural Agricultural (5-acre) - The principal building's footprint is capped at 10,000 sq ft. The front setback is measured from the centre of the travelled portion of the road, not from the property line.
- Minimum road frontage is 60 ft.
- Overlay districts carry additional area and bulk requirements of their own.
Rural Agricultural (2-acre), Rural Agricultural (1-acre) - The principal building's footprint is capped at 4,000 sq ft. The front setback is measured from the centre of the travelled portion of the road, not from the property line.
- Minimum road frontage is 60 ft.
- Overlay districts carry additional area and bulk requirements of their own.
Commercial - A wholesale store, hotel or motel needs two acres rather than the 30,000 sq ft minimum. The side yard becomes 50 ft where the lot adjoins a residential district and 40 ft where it adjoins an existing building.
- The front setback is measured from the centre of the travelled portion of the road, not from the property line.
- Minimum road frontage is 100 ft.
- Overlay districts carry additional area and bulk requirements of their own.
Commercial Corridor - A wholesale store, hotel or motel needs two acres rather than the 30,000 sq ft minimum. The side yard becomes 50 ft where the lot adjoins a residential district and 40 ft where it adjoins an existing building.
- The front setback may be no more than 100 ft, and it is measured from the centre of the travelled portion of the road, not from the property line.
- Minimum road frontage is 100 ft.
- Overlay districts carry additional area and bulk requirements of their own.
Commercial Recreation - A wholesale store, hotel or motel needs two acres rather than the 30,000 sq ft minimum. The side yard becomes 50 ft where the lot adjoins a residential district and 40 ft where it adjoins an existing building.
- The front setback is measured from the centre of the travelled portion of the road, not from the property line.
- Minimum road frontage is 200 ft.
- Overlay districts carry additional area and bulk requirements of their own.
Commercial Industrial - The front setback is measured from the centre of the travelled portion of the road, not from the property line.
- Minimum road frontage is 200 ft.
- The 30,000 sq ft minimum has no exception for a wholesale store or hotel here.
- Overlay districts carry additional area and bulk requirements of their own.
Commercial Residential - A residential use follows the RA-1 district's area and bulk regulations, which are the figures shown, and a commercial use follows the C district's.
- A commercial use follows the C District: 0.6887 acres of lot, the same 75 ft front setback, a 20 ft side and 25 ft rear yard, 40 ft of height and 75% coverage.
- The front setback is measured from the centre of the travelled portion of the road, not from the property line.
- Minimum road frontage is 60 ft.
- Overlay districts carry additional area and bulk requirements of their own.
ADUs vs. short-term rentals in New Lebanon
Short-term rentals allowed with local rules for Town of New Lebanon. A short-term rental must have a local contact person within 20 miles, and an ADU cannot be used as a short-term rental for three years after its certificate of occupancy. 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 minimum1–5 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityNYSEG territory.
- Zoning codeecode360.com/5150607
- Building dept(518) 794-8884
ADU FAQ — New Lebanon, NY
Are ADUs allowed in New Lebanon, NY?
Town of New Lebanon has 8 districts. 4 districts allow ADUs, 2 do not, 2 require a special-use permit. Check your address with the free ADU checker, or confirm with the building department at (518) 794-8884.
Do I need a special permit for an ADU in New Lebanon?
It depends on the district: 2 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 New Lebanon?
Short-term rentals allowed with local rules for Town of New Lebanon. 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 New Lebanon
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 New Lebanon, priced by size.
How we know this
- Districts confirmed
- 8 of 8 — every mapped district.
- Last reviewed
- Not covered here
- Overlay districts, the zoning map, and any conditions attached to an individual parcel. Size limits and owner-occupancy terms sit in the code section above, not in this summary.
More on New Lebanon: Full zoning for new construction · ADU build cost · House build cost · ADU rules across Columbia County · All Columbia County towns
ADU information for Town of New Lebanon is compiled from the municipal code (last reviewed 2026-06-02) 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) 794-8884 before relying on any answer. Source: the Offsite / Aldo zoning dataset.