ADUs are allowed in BlackfootTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Blackfoot, ID
Is your property eligible for an ADU?
# of Parcels
6,374
Zoning districts
17
Avg Parcel Value
$276,296
Median Parcel Size
0.21 acres
Zoning Districts:
6,656 parcels · 17 districts
LDR1
42%(2,769)
MDR1
19%(1,289)
HDR1
13%(885)
C2
11%(738)
Other
15%(975)
ADU Rules
What can you build in Blackfoot, ID?
Blackfoot, ID 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
- –For a single-household dwelling, the ADU must be smaller than the primary dwelling and no larger than 1,000 sq ft.
- –For a non-residential primary use, no fixed maximum; the ADU must be smaller than the primary use (using the primary building’s gross floor area when known).
Detached ADU Size Limits
- –Detached ADU must be smaller than the primary building; on single-family lots it is also capped at 1,000 sq ft. For non-residential primary uses, there is no fixed cap but the ADU must be smaller than the primary use.
Max Units
- –TAG: 1 ADU per lot
- –LDR2: 1 ADU per lot (1 SF dwelling + 1 ADU)
- –Duplex/multifamily: 0 ADUs per lot
Owner Occupancy
- –Owner must occupy either the primary dwelling or the ADU
Parking
- –1 space/ADU (citywide); 1 space/bedroom for ADUs with non-residential use (>1,000 sq ft); 2 spaces/add'l unit in LDR-2 (rear/side yard); waivers possible for reduced need with no neighborhood impact; garage conversions not allowed unless required parking is provided on-site; walkway from ADU to street required.
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.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
Is your property eligible for an ADU?
ADU rules in other Idaho municipalities
Rules change at the town line. Check the municipality your property is actually in.
Bingham County