ADU · Columbia County
Can you build an ADU in Stockport, NY?
Town of Stockport has 4 districts. 3 districts allow ADUs with occupancy restrictions, 1 does not. Check your address to confirm the district that applies to your parcel:
What the Stockport 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 ac | 20 / 10 / 30 ft | 35 ft | Occupancy restricted |
| Residential | 1 ac | 25 / 20 / 50 ft | 35 ft | Occupancy restricted |
| Rural Residential | 3 ac | 40 / 25 / 50 ft | 35 ft | Occupancy restricted |
| Commercial/Light Industrial | 0.5 ac | 100 / 50 / 100 ft | 35 ft | No |
Hamlet — THE BASE ROW IS "With central water only". The Hamlet district is printed twice, and with common sewer as well the figures drop by two thirds. THE SCHEDULE PUBLISHES TWO DIFFERENT DENSITY FIGURES AND THEY ARE NOT THE SAME QUESTION: a "Density (number of dwellings per acre)" column that governs how many units a parcel yields, and a "Minimum Lot Area Per Dwelling Unit (acres)" column that is the floor under each lot. In every district the density figure is the larger of the two. Minimum open space 40%. A nonresidential use is limited to one principal building per acre in this row and per half acre with sewer. Six OVERLAY districts also appear in this schedule and none is a base district: Conservation (C), Automobile Salvage (AS), Columbia Springs (CS), Agriculture (A), Senior Citizens (SC) and Flood Fringe (FF-O). Their area and bulk requirements are either the base district's, set project-specific under §§ 120-20.7 and 120-20.8, or referred to §§ 120-20.5, 120-20.6B, 120-20.9 and 120-20.10.
Residential — THE BASE ROW IS "With central water". THE SCHEDULE PUBLISHES TWO DIFFERENT DENSITY FIGURES AND THEY ARE NOT THE SAME QUESTION: a "Density (number of dwellings per acre)" column that governs how many units a parcel yields, and a "Minimum Lot Area Per Dwelling Unit (acres)" column that is the floor under each lot. In every district the density figure is the larger of the two. In R the two rows differ ONLY in density, not in minimum lot area. Minimum open space 60%. A nonresidential use is limited to one principal building per 1.5 acres. Six OVERLAY districts also appear in this schedule and none is a base district: Conservation (C), Automobile Salvage (AS), Columbia Springs (CS), Agriculture (A), Senior Citizens (SC) and Flood Fringe (FF-O). Their area and bulk requirements are either the base district's, set project-specific under §§ 120-20.7 and 120-20.8, or referred to §§ 120-20.5, 120-20.6B, 120-20.9 and 120-20.10.
Rural Residential — THE SCHEDULE PUBLISHES TWO DIFFERENT DENSITY FIGURES AND THEY ARE NOT THE SAME QUESTION: a "Density (number of dwellings per acre)" column that governs how many units a parcel yields, and a "Minimum Lot Area Per Dwelling Unit (acres)" column that is the floor under each lot. In every district the density figure is the larger of the two. RR IS THE DISTRICT WHERE THAT DISTINCTION BITES: the schedule sets a density of one dwelling per THREE acres and a minimum lot area per dwelling unit of ONE acre. The three-acre figure is what this record's lot size holds, and it is left there deliberately — it is the conservative reading, and lowering it to the one-acre column on an ambiguity would be a permissive change made on inference. Both columns are stated here so a reader can see which question they are asking. Minimum open space 70%. A nonresidential use is limited to one principal building per three acres. Six OVERLAY districts also appear in this schedule and none is a base district: Conservation (C), Automobile Salvage (AS), Columbia Springs (CS), Agriculture (A), Senior Citizens (SC) and Flood Fringe (FF-O). Their area and bulk requirements are either the base district's, set project-specific under §§ 120-20.7 and 120-20.8, or referred to §§ 120-20.5, 120-20.6B, 120-20.9 and 120-20.10.
Commercial/Light Industrial — The schedule prints a dash for both the density and the minimum lot area per dwelling unit in CLI — it publishes NO residential standard. The half acre recorded is the "Minimum Lot Area per Principal Building for Nonresidential Uses" figure, which is why the basis is nonresidential. Minimum open space 40%. No commercial retail structure may exceed a 10,000 sq ft building footprint (schedule note 1). Six OVERLAY districts also appear in this schedule and none is a base district: Conservation (C), Automobile Salvage (AS), Columbia Springs (CS), Agriculture (A), Senior Citizens (SC) and Flood Fringe (FF-O). Their area and bulk requirements are either the base district's, set project-specific under §§ 120-20.7 and 120-20.8, or referred to §§ 120-20.5, 120-20.6B, 120-20.9 and 120-20.10.
ADUs vs. short-term rentals in Stockport
No local short-term-rental law on record - which is not the same as permission for Town of Stockport. No dedicated short-term rental law. Whole-dwelling rentals fall under the residential dwelling use (permitted). Bed-and-breakfast establishments require a special use permit per the Ch. 120 Schedule of Use Regulations. Verify with Building Dept at (518) 828-9389. 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 minimum1–3 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCentral Hudson territory.
- Zoning codeecode360.com/12912293
- Building dept(518) 828-9389
- Last reviewed2026-07-15
ADU FAQ — Stockport, NY
Are ADUs allowed in Stockport, NY?
Town of Stockport has 4 districts. 3 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) 828-9389.
Do I need a special permit for an ADU in Stockport?
No district in Town of Stockport requires a special-use permit for an ADU - 3 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 Stockport?
No local short-term-rental law on record - which is not the same as permission for Town of Stockport. 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 Stockport
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 Stockport, priced by size.
More on Stockport: Full zoning for new construction · ADU build cost · House build cost · All Columbia County towns
ADU information for Town of Stockport is compiled from the municipal code (last reviewed 2026-07-15) 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) 828-9389 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.