ADUs are allowed in SmyrnaTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Smyrna, DE
Is your property eligible for an ADU?
# of Properties
6,228
Owner-occupied
55%
Zoning districts
20
Avg Home Value
$224,813
Median Lot Size
0.15 acres
Avg Income
$79,847
Residential Types:
6,228 housing units
Single Family
67%
Apts (4+ units)
1%
Other
32%
Zoning Districts:
6,555 parcels · 20 districts
R-2A
34%(2,211)
R-2
19%(1,257)
R-3
17%(1,082)
R-1
11%(713)
Other
20%(1,292)
ADU Rules
What can you build in Smyrna, DE?
Smyrna, 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
Size Limits
- –Maximum size of 800 sq ft
Max Units
- –1 ADU per single-family detached lot; 0 ADUs on lots with other principal residential types.
Owner Occupancy
- –Owner must reside full time in either the primary dwelling or ADU
Parking
- –1 off-street space per ADU (in addition to 2 for the primary single-family dwelling); Planning and Zoning Commission waivers may apply; CC district has no ADU parking minimum.
Rental Restrictions
- –Annual rental license and inspection required; ADUs must comply with Article XI – Rental Properties of Chapter 18.
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.
New Castle County