ADUs are allowed in MilfordTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Milford, DE
Is your property eligible for an ADU?
# of Properties
1,544
Owner-occupied
37%
Zoning districts
16
Avg Home Value
$194,776
Median Lot Size
0.17 acres
Avg Income
$95,070
Residential Types:
1,544 housing units
Single Family
56%
Apts (4+ units)
2%
Other
42%
Zoning Districts:
7,566 parcels · 16 districts
R-2
38%(2,903)
R-1
26%(1,996)
R-3
24%(1,810)
C-3
4%(274)
Other
8%(583)
ADU Rules
What can you build in Milford, DE?
Milford, DE follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Conditional Use Permit
- –Detached ADU: Conditional Use Permit
Interior / Attached ADU Size Limits
- –Maximum size of 35% of the single-family detached dwelling’s floor area for an internal/attached accessory apartment.
Detached ADU Size Limits
- –Maximum ADU size is the greater of 40% of the single-family dwelling’s floor area or 1,200 sq ft
Max Units
- –1 ADU per single-family lot (either 1 internal or 1 detached/converted, not both).
- –Duplex or multifamily principal structures: none specified.
Owner Occupancy
- –One dwelling unit on the property must be owner-occupied.
Parking
- –2 spaces/ADU (1.5 rounded up); fractions ≥1/2 count as 1; in C-2, no on-site off-street parking is required (municipal parking supplies).
Rental Restrictions
- –One dwelling unit must be owner-occupied; renting both the primary and the ADU is prohibited.
- –Short-term rentals: allowed only for an approved ADU; primary unit must remain owner-occupied and only one listing per property.
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.
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ADU rules in other Delaware municipalities
Rules change at the town line. Check the municipality your property is actually in.
Kent County