ADU · Columbia County
Can you build an ADU in Stuyvesant, NY?
Town of Stuyvesant has 6 districts. 5 districts allow ADUs with occupancy restrictions, 1 does not. Check your address to confirm the district that applies to your parcel:
What the Stuyvesant code says
An accessory dwelling unit is permitted in the Hamlet 1, Hamlet 2, Agricultural and Hamlet Extension districts only if the owner lives in the house or the unit, so one of the two can be rented. The permission does not survive a sale to someone who will not live on the parcel.
Conditions the code attaches:
- The unit can be an internal conversion, an addition to the house or a newly built accessory structure, with one unit per parcel.
- It must have at least 400 sq ft of livable space, no more than 75% of the primary dwelling's square footage and never more than 1,500 sq ft, with at most two bedrooms.
- It does not require a minimum lot size, provided all setback requirements for a single-family residence are met.
- It needs potable water and sewage approved by the Columbia County Board of Health; a shared system must be shown by the applicant's engineer to meet NYSDOH Part 75-A once upgraded for the added unit.
- Parking is two off-street spaces for the principal dwelling plus one for the accessory unit.
- A building permit and certificate of occupancy are required, and site plan review may also apply; confirm the approval path with the Code Enforcement Officer at (518) 758-6248.
What the Stuyvesant 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 |
|---|---|---|---|---|
| Hamlet 1 | 0.41 ac | 40 / 25 / 50 ft | 35 ft | Occupancy restricted |
| Hamlet 2 | 0.41 ac | 40 / 25 / 50 ft | 35 ft | Occupancy restricted |
| Agricultural | 5 ac | 40 / 25 / 50 ft | 35 ft | Occupancy restricted |
| Hamlet Extension | 1 ac | 40 / 25 / 50 ft | 35 ft | Occupancy restricted |
| Shoreline (follows Hamlet Extension standards) | 1 ac | 40 / 25 / 50 ft | 35 ft | Occupancy restricted |
| Commercial/Light Industrial | — | — | 35 ft | No |
Hamlet 1, Hamlet 2 - The 0.41 acres shown is the code's worked example, not a fixed minimum. The minimum lot size is set by applying Columbia County Health Department standards for an on-lot well and septic system to the parcel, then adding the required setbacks.
- Lot frontage must be at least 60 ft, a separate requirement from the lot width, which is measured at the required front-yard setback.
- An accessory building takes the same 40 ft front yard, but 10 ft side and rear yards for a residential accessory use and 25 ft for an agricultural one.
Agricultural - A density average applies separately from the minimum lot size: a parcel's total developable area divided by the 5 acres required per use in this district.
- A clustered subdivision halves the required lot width from 300 ft to 150 ft, approved by the Planning Board under Section 16 rather than available by right.
- Section 8 attaches a density bonus: one additional lot for every 10 acres of buildable area, provided a single contiguous parcel of at least 50% of the total lot area is kept as open space.
- A Prime Agricultural Land Set Aside bonus adds another lot per 10 acres of non-prime soil voluntarily excluded from development, and the two bonuses may be combined.
- An accessory building takes the same 40 ft front yard but 10 ft side and rear for a residential accessory use and 25 ft for an agricultural one, against 25 ft and 50 ft for a principal building.
- Minimum lot frontage is 60 ft, a separate requirement from the lot width, which is measured at the required front-yard setback.
Hamlet Extension - A density average applies separately from the minimum lot size: a parcel's total developable area divided by the 1 acre required per use in this district.
- Lot frontage must be at least 60 ft, a separate requirement from the lot width, which is measured at the required front-yard setback.
- An accessory building takes the same 40 ft front yard, but 10 ft side and rear yards for a residential accessory use and 25 ft for an agricultural one.
- Conventional and clustered subdivisions take the same 150 ft lot width.
Shoreline (follows Hamlet Extension standards) - SL follows the Hamlet Extension standards, including a density average separate from the minimum lot size: a parcel's total developable area divided by the acres required per use.
- Lot frontage must be at least 60 ft, a separate requirement from the lot width, which is measured at the required front-yard setback.
- An accessory building takes the same 40 ft front yard, but 10 ft side and rear yards for a residential accessory use and 25 ft for an agricultural one.
Commercial/Light Industrial - Minimum lot size, setbacks and lot width are not fixed in this district; they are determined case by case through the site plan review process.
- Lot frontage must be at least 60 ft.
ADUs vs. short-term rentals in Stuyvesant
Short-term rentals allowed with local rules for Town of Stuyvesant. Stuyvesant allows short-term rentals, including unhosted, investor-owned ones, with a one-year Town permit under Local Law No. 2 of 2024. Each permit attaches to a single tax parcel and is issued only to the property owner. 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. Municipal source
Good to know
- Residential lot minimum0.41–5 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCentral Hudson territory.
- Zoning codestuyvesantny.gov/wp-content/uploads/2022/04/Zoning-Law-Adopted-9-6-2018-modified-4-14-22.pdf
- Building dept(518) 758-6248
ADU FAQ — Stuyvesant, NY
Are ADUs allowed in Stuyvesant, NY?
Town of Stuyvesant has 6 districts. 5 districts allow ADUs with occupancy restrictions, 1 does not. Check your address with the free ADU checker, or confirm with the building department at (518) 758-6248.
Do I need a special permit for an ADU in Stuyvesant?
No district in Town of Stuyvesant requires a special-use permit for an ADU - 5 districts allow ADUs with occupancy restrictions, 1 does not. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Stuyvesant?
Short-term rentals allowed with local rules for Town of Stuyvesant. 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 Stuyvesant
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 Stuyvesant, priced by size.
How we know this
- Districts confirmed
- 6 of 6 — 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 Stuyvesant: 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 Stuyvesant 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) 758-6248 before relying on any answer. Source: the Offsite / Aldo zoning dataset.