

ADUs are allowed in Box ElderTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Box Elder, SD
Is your property eligible for an ADU?
# of Parcels
3,194
Zoning districts
15
Avg Parcel Value
$379,554
Median Parcel Size
0.26 acres
Zoning Districts:
3,187 parcels · 15 districts
R2
48%(1,519)
R4
12%(392)
PD
10%(311)
R1
7%(210)
Other
24%(755)
ADU Rules
What can you build in Box Elder, SD?
Box Elder, 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
Interior / Attached ADU Size Limits
- –Maximum size is the smaller of 1,200 sq ft and the primary dwelling’s footprint area (must be smaller than the footprint).
Detached ADU Size Limits
- –Maximum size of 1,200 sq ft
- –Must be smaller than the primary dwelling’s footprint
Owner Occupancy
- –Owner or immediate family must reside in either dwelling
Parking
- –1 space/ADU; on-site parking required in addition to primary dwelling; no maximum stated; parking must be on the lot and hard-surfaced; front-yard lawn parking prohibited; gravel may be used beyond the required driveway if not in the front yard.
Rental Restrictions
- –Detached ADU: Short-term rentals prohibited; Internal/Attached ADU: Must be rented long-term (30+ days); short-term rentals prohibited for all ADUs.
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