

ADUs are allowed in NampaTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Nampa, ID
Is your property eligible for an ADU?
# of Parcels
43,240
Zoning districts
30
Avg Parcel Value
$564,534
Median Parcel Size
0.19 acres
Zoning Districts:
43,240 parcels · 30 districts
RS6
56%(24,267)
RS7
13%(5,525)
RD
8%(3,388)
RS8.5
7%(2,863)
Other
17%(7,197)
ADU Rules
What can you build in Nampa, ID?
Nampa, ID 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: By Right
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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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.
Canyon County