ADU · Dutchess County
Can you build an ADU in Wappinger, NY?
Town of Wappinger has 20 districts. 8 districts allow ADUs with occupancy restrictions, 4 do not. 8 districts have incomplete data - verify with the building department at (845) 297-4158. Check your address to confirm the district that applies to your parcel:
What the Wappinger 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 |
|---|---|---|---|---|
| 1-Family Residence 5-Acre | 5 ac | 100 / 50 / 100 ft | 35 ft | Occupancy restricted |
| 1-Family Residence 3-Acre | 3 ac | 75 / 50 / 50 ft | 35 ft | Occupancy restricted |
| 1-Family Residence 80,000 Square Feet | 1.8365 ac | 50 / 40 / 50 ft | 35 ft | Occupancy restricted |
| 1-Family Residence 40,000/80,000 Square Feet | 1.8365 ac | 50 / 40 / 50 ft | 35 ft | — |
| 1-Family Residence 40,000 Square Feet | 0.9183 ac | 50 / 25 / 50 ft | 35 ft | Occupancy restricted |
| 1-Family Residence 20,000/40,000 Square Feet | 0.9183 ac | 50 / 25 / 50 ft | 35 ft | — |
| 1-Family Residence 20,000 Square Feet | 0.4591 ac | 35 / 20 / 40 ft | 35 ft | Occupancy restricted |
| 1-Family Residence 15,000 Square Feet | 0.3444 ac | 35 / 15 / 30 ft | 35 ft | Occupancy restricted |
| 1-Family Residence 10,000 Square Feet | 0.2296 ac | 25 / 12 / 25 ft | 35 ft | Occupancy restricted |
| Multifamily Residence 3 | 15 ac | 50 / 50 / 50 ft | 35 ft | — |
| Multifamily Residence 5 | 10 ac | 50 / 25 / 50 ft | 35 ft | — |
| Highway Design | 2 ac | 50 / 10 / 30 ft | 35 ft | — |
| Neighborhood Business | — | 25 / 20 / 30 ft | 35 ft | No |
| General Business | 0.3444 ac | 25 / 20 / 30 ft | 35 ft | No |
| Shopping Center | 5 ac | 100 / 50 / 50 ft | 35 ft | No |
| Highway Business | 2 ac | 50 / 10 / 30 ft | 35 ft | No |
| Conservation Commercial | 1 ac | 50 / 10 / 30 ft | 35 ft | — |
| Conservation Office Park | 5 ac | 100 / 50 / 50 ft | 35 ft | — |
| Hamlet Mixed Use | — | 15 / 12 / 25 ft | 35 ft | Occupancy restricted |
| Airport Industry | 2 ac | 100 / 50 / 50 ft | 35 ft | — |
1-Family Residence 5-Acre — The front yard is 100 ft from either a county or state highway or any other street. Minimum lot width 275 ft, minimum lot DEPTH 365 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 20 ft from a side lot line and 20 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
1-Family Residence 3-Acre — The front yard is 75 ft from either a county or state highway or any other street. Minimum lot width 225 ft, minimum lot DEPTH 300 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 20 ft from a side lot line and 20 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
1-Family Residence 80,000 Square Feet — The front yard is published twice: 50 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 200 ft, minimum lot DEPTH 200 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 10 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
1-Family Residence 40,000/80,000 Square Feet — This district exists to allow a higher density where public or common water and sewer are used, and the base row is the UNSERVICED case at 80,000 sq ft. With public water and sewer the lot drops to 40,000 sq ft, with one or the other to 60,000, and the lot width, depth and yards step down with it under Note 1. The front yard is published twice: 50 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 200 ft, minimum lot DEPTH 200 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 10 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
1-Family Residence 40,000 Square Feet — The front yard is published twice: 50 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 125 ft, minimum lot DEPTH 125 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 10 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
1-Family Residence 20,000/40,000 Square Feet — This district exists to allow a higher density where public or common water and sewer are used, and the base row is the UNSERVICED case at 40,000 sq ft. With public water and sewer the lot drops to 20,000 sq ft, with one or the other to 30,000, and the lot width, depth and yards step down with it under Note 1. The front yard is published twice: 50 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 125 ft, minimum lot DEPTH 125 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 10 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
1-Family Residence 20,000 Square Feet — The front yard is published twice: 35 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 100 ft, minimum lot DEPTH 125 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 10 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
1-Family Residence 15,000 Square Feet — The front yard is published twice: 35 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 85 ft, minimum lot DEPTH 100 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 6 ft from a side lot line and 10 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
1-Family Residence 10,000 Square Feet — The front yard is published twice: 25 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 60 ft, minimum lot DEPTH 80 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 6 ft from a side lot line and 10 ft from the rear. Height is capped at 2 1/2 stories as well as 35 ft.
Multifamily Residence 3 — RMF-3 allows a maximum of 3 dwelling units per net lot area. The base row is the unserviced case at 15 acres; with public water AND sewer the minimum drops to 5 acres. With only one of the two it stays at 15. The front yard is published twice: 50 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 100 ft, minimum lot DEPTH 150 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 10 ft from the rear. Height is capped at 3 stories as well as 35 ft.
Multifamily Residence 5 — RMF-5 allows a maximum of 5 dwelling units per net lot area. The base row is the unserviced case at 10 acres; with public water AND sewer the minimum drops to 5 acres. With only one of the two it stays at 10. The front yard is published twice: 50 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 100 ft, minimum lot DEPTH 150 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 10 ft from the rear. Height is capped at 3 stories as well as 35 ft.
Highway Design, Highway Business — The front yard is published twice: 50 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 150 ft, minimum lot DEPTH 200 ft and minimum street frontage 150 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 30 ft from the rear. Three separate area limits apply, not one: building coverage 25%, maximum IMPERVIOUS SURFACE 75%, and a minimum of 25% landscaped open space. Only the building coverage is in the coverage field. Height is capped at 2 1/2 stories as well as 35 ft. Where the lot abuts land in a residential district, the more restrictive side and rear yard of the two districts governs.
Neighborhood Business — The front yard is published twice: 25 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 100 ft, minimum lot DEPTH 100 ft and minimum street frontage 100 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 20 ft from a side lot line and 30 ft from the rear. Three separate area limits apply, not one: building coverage 20%, maximum IMPERVIOUS SURFACE 75%, and a minimum of 25% landscaped open space. Only the building coverage is in the coverage field. Height is capped at 2 1/2 stories as well as 35 ft. Where the lot abuts land in a residential district, the more restrictive side and rear yard of the two districts governs.
General Business — The front yard is published twice: 25 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 100 ft, minimum lot DEPTH 150 ft and minimum street frontage 100 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 20 ft from a side lot line and 30 ft from the rear. Three separate area limits apply, not one: building coverage 25%, maximum IMPERVIOUS SURFACE 75%, and a minimum of 25% landscaped open space. Only the building coverage is in the coverage field. Height is capped at 2 1/2 stories as well as 35 ft. Where the lot abuts land in a residential district, the more restrictive side and rear yard of the two districts governs.
Shopping Center — The front yard is published twice: 100 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 500 ft, minimum lot DEPTH 500 ft and minimum street frontage 300 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 50 ft from a side lot line and 50 ft from the rear. Three separate area limits apply, not one: building coverage 20%, maximum IMPERVIOUS SURFACE 75%, and a minimum of 25% landscaped open space. Only the building coverage is in the coverage field. Height is capped at 2 1/2 stories as well as 35 ft. Where the lot abuts land in a residential district, the more restrictive side and rear yard of the two districts governs.
Conservation Commercial — Parking has its own setbacks in CC: 20 ft from the front lot line and 10 ft from a side or rear lot line. The front yard is published twice: 50 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 100 ft, minimum lot DEPTH 100 ft and minimum street frontage 100 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 10 ft from a side lot line and 30 ft from the rear. Three separate area limits apply, not one: building coverage 20%, maximum IMPERVIOUS SURFACE 40%, and a minimum of 60% landscaped open space. Only the building coverage is in the coverage field. Height is capped at 2 1/2 stories as well as 35 ft. Where the lot abuts land in a residential district, the more restrictive side and rear yard of the two districts governs.
Conservation Office Park — The front yard is published twice: 100 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 500 ft, minimum lot DEPTH 500 ft and minimum street frontage 300 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 50 ft from a side lot line and 50 ft from the rear. Three separate area limits apply, not one: building coverage 15%, maximum IMPERVIOUS SURFACE 40%, and a minimum of 60% landscaped open space. Only the building coverage is in the coverage field. Height is capped at 2 1/2 stories as well as 35 ft. Where the lot abuts land in a residential district, the more restrictive side and rear yard of the two districts governs.
Hamlet Mixed Use — The schedule states no flat lot minimum for HM. What it sets instead is 25,000 sq ft of lot area per one-family dwelling unit, reduced to 10,000 sq ft where the lot is served by a central sewer consistent with the town water and sewer management plan. The front yard is published twice: 15 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 50 ft, minimum lot DEPTH 80 ft and minimum street frontage 50 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 5 ft from a side lot line and 5 ft from the rear. Three separate area limits apply, not one: building coverage 25%, maximum IMPERVIOUS SURFACE 50%, and a minimum of 50% landscaped open space. Only the building coverage is in the coverage field. Height is capped at 2 1/2 stories as well as 35 ft. Where the lot abuts land in a residential district, the more restrictive side and rear yard of the two districts governs.
Airport Industry — The front yard is published twice: 100 ft from the front lot line of an ordinary street, which is the figure recorded, and 75 ft from a COUNTY OR STATE HIGHWAY. An existing dwelling, and any addition to or expansion of one, uses the ordinary-street figure even on a county or state highway. Minimum lot width 200 ft, minimum lot DEPTH 200 ft and minimum street frontage 150 ft are three separate requirements and all must be met. An accessory building under 15 ft high and under 144 sq ft may stand 50 ft from a side lot line and 50 ft from the rear. Three separate area limits apply, not one: building coverage 20%, maximum IMPERVIOUS SURFACE 75%, and a minimum of 25% landscaped open space. Only the building coverage is in the coverage field. Height is capped at 2 1/2 stories as well as 35 ft. Where the lot abuts land in a residential district, the more restrictive side and rear yard of the two districts governs.
ADUs vs. short-term rentals in Wappinger
Short-term rentals allowed with local rules for Town of Wappinger. STR regulated in residential districts (R-40, R-40/80, R-80, R-3A, R-5A). Building permit required. Minimum quality of life, environmental, and safety requirements apply. Contact Town of Wappinger Building Dept at (845) 297-4158 for current permit requirements. 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 minimum0.2296–15 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCentral Hudson territory.
- Zoning codeecode360.com/11073974
- Building dept(845) 297-4158
- Last reviewed2026-08-16
ADU FAQ — Wappinger, NY
Are ADUs allowed in Wappinger, NY?
Town of Wappinger has 20 districts. 8 districts allow ADUs with occupancy restrictions, 4 do not. 8 districts have incomplete data - verify with the building department at (845) 297-4158. Check your address with the free ADU checker.
Do I need a special permit for an ADU in Wappinger?
No district in Town of Wappinger requires a special-use permit for an ADU - 8 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 Wappinger?
Short-term rentals allowed with local rules for Town of Wappinger. 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 Wappinger
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $210k–275k 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 Wappinger, priced by size.
More on Wappinger: Full zoning for new construction · ADU build cost · House build cost · All Dutchess County towns
ADU information for Town of Wappinger 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) 297-4158 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.