ADUs are allowed in WilmingtonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Wilmington, VT
Is your property eligible for an ADU?
# of Properties
2,914
Owner-occupied
16%
Zoning districts
7
Avg Home Value
$356,293
Median Lot Size
1.04 acres
Avg Income
$76,932
Residential Types:
2,914 housing units
Single Family
60%
2-3 Family
12%
Other
28%
Zoning Districts:
3,241 parcels · 7 districts
RES
68%(2,197)
R-RES
17%(541)
C/R
6%(196)
VIL
6%(195)
Other
3%(112)
ADU Rules
What can you build in Wilmington, VT?
Wilmington, VT follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Detached ADU Size Limits
- –Maximum of the greater of 30% of the one-family dwelling’s habitable floor area or 900 sq ft for new detached ADUs.
Max Units
- –1 ADU per single-family lot
Owner Occupancy
- –Owner must occupy either the primary residence or the ADU
Parking
- –0 spaces/ADU; additional parking cannot be required; general parking minimums do not apply to ADUs
ADU State Law
What can you build in Vermont?
- –Vermont Housing Improvement Program – ADU (VHIP-ADU) Grants up to $50,000 toward creating an ADU in an existing or new structure. Administered by the Department of Housing & Community Development. More info
- –24 V.S.A. § 4412(1)(E)–(F) – Guarantees one by-right ADU.
- –24 V.S.A. § 4303(38)(A)–(B) – Definition of "accessory dwelling unit" (size limit & wastewater clause).
- –24 V.S.A. § 4414(4)(E) – Caps local parking requirements (added by Act 47, 2023).
- –By-right entitlement – Every municipality must permit one ADU on an owner-occupied single-family lot located in a district where residential dwellings are allowed.
- –Structure types – Internal, attached, or detached units are allowed. Conversion of an existing detached non-residential building (e.g., garage) cannot be held to stricter standards than a house conversion.
- –Size cap – The larger of 30 % of the home's habitable floor area or 900 sq ft. (Local bylaws may be less restrictive.)
- –Dimensional & review standards – The ADU (and its host house) is subject only to the same setbacks, height, lot-coverage, and ordinary permit reviews that apply to a single-family home in that district. No extra conditional-use review may be imposed just because it's an ADU.
- –Parking – A municipality may not require more than one space per dwelling in areas served by municipal sewer and water.
- –Wastewater capacity – The lot must have adequate septic or sewer capacity.
- –Minimum number – Statute guarantees at least one ADU; towns may allow additional units or larger sizes if they wish.
- –Hazard overlays – The statewide mandate does not override bylaws adopted for flood-hazard or fluvial-erosion areas (24 V.S.A. § 4424). A town may deny or condition an ADU in those overlays.
- –Short-term rentals – Municipalities may regulate short term rental use of ADUs.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
Is your property eligible for an ADU?
ADU rules in other Vermont municipalities
Rules change at the town line. Check the municipality your property is actually in.
Windham County