ADUs are allowed in Rapid CityTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Rapid City, SD
Is your property eligible for an ADU?
# of Parcels
28,509
Zoning districts
28
Avg Parcel Value
$544,336
Median Parcel Size
0.22 acres
Zoning Districts:
28,487 parcels · 28 districts
LDR-1
49%(14,067)
MDR
27%(7,687)
LDR-2
6%(1,839)
GC
6%(1,700)
Other
11%(3,194)
ADU Rules
What can you build in Rapid City, SD?
Rapid City, SD 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
- –On lots under 6,500 sq ft, detached ADUs are not allowed (maximum building area 0 sq ft).
Max Units
- –1 ADU per lot (single-family, owner-occupied)
- –Park Forest District: 1 ADU per lot; only as part of the single-family dwelling (detached ADU not allowed)
Owner Occupancy
- –Owner must reside full-time in the main dwelling or ADU
Parking
- –3 off-street spaces total (2 for the main dwelling, 1 for the ADU); no reductions or exemptions stated; must comply with city ordinances and the Infrastructure Design Criteria Manual
Rental Restrictions
- –Short-term rentals prohibited; ADU shall only be rented for a term of more than 28 days.
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 Dakota municipalities
Rules change at the town line. Check the municipality your property is actually in.
Pennington County