ADU rules for Unincorporated Northumberland
Accessory Dwelling Unit (ADU) Rules for Unincorporated Northumberland, VA
Is your property eligible for an ADU?
# of Properties
16,929
Owner-occupied
56%
Zoning districts
17
Avg Home Value
$160,122
Median Lot Size
1.20 acres
Avg Income
$85,039
Residential Types:
16,929 housing units
Single Family
5%
Other
95%
Zoning Districts:
22,155 parcels · 17 districts
R2
47%(10,504)
A1
34%(7,454)
R1
5%(1,088)
R3
4%(941)
Other
10%(2,168)
ADU Rules
What can you build in Unincorporated Northumberland, VA?
Unincorporated Northumberland, VA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
Parking
- –2 spaces/ADU; no ADU-specific standards; parking on the same lot as the main building; no transit-based reductions or waivers
ADU State Law
What can you build in Virginia?
- –Virginia does not have a statewide ADU mandate; ADU rules are set by individual municipalities.
- –Building/fire codes are set statewide, but whether an ADU is allowed is local zoning.
- –SB 304 would have mandated ADUs. It passed the Virginia Senate in 2024 but was continued/left in House committee (i.e., not enacted statewide)
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