ADUs are allowed in HanahanTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Hanahan, SC
Is your property eligible for an ADU?
# of Properties
5
Zoning districts
15
Zoning Districts:
6,814 parcels · 15 districts
RS
59%(4,005)
PD
16%(1,100)
RSL
6%(404)
TR
4%(299)
Other
15%(1,006)
ADU Rules
What can you build in Hanahan, SC?
Hanahan, SC 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
Interior / Attached ADU Size Limits
- –Maximum 600 sq ft of heated floor area for an ADU accessory to a single-family detached home
- –For ADUs accessory to non-residential uses, maximum heated floor area is the lesser of 2,500 sq ft or the building’s total floor area
Detached ADU Size Limits
- –Maximum size of 600 sq ft heated floor area for an ADU accessory to a single-family home
- –Maximum size of 50% of the house’s gross floor area for an accessory structure on a single-family lot
Parking
- –1 space/ADU; 0 on-site required; stalls may be provided on-site, on-street within 600 ft, or off-site within 400 ft; shared parking reductions apply.
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 South Carolina municipalities
Rules change at the town line. Check the municipality your property is actually in.
Berkeley County