

ADUs are allowed in HaydenTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Hayden, ID
Is your property eligible for an ADU?
# of Parcels
7,637
Zoning districts
9
Avg Parcel Value
$594,438
Median Parcel Size
0.24 acres
Zoning Districts:
7,637 parcels · 9 districts
R-1
76%(5,828)
C
8%(583)
LI
6%(435)
MR
4%(305)
Other
6%(486)
ADU Rules
What can you build in Hayden, ID?
Hayden, 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
- –Maximum size of 1,000 sq ft for internal/attached ADUs; larger units are treated as duplexes.
Detached ADU Size Limits
- –Maximum detached ADU size of 1,000 sq ft citywide
Parking
- –1 space per ADU; on-site parking required; on-street parking cannot satisfy minimums; tandem parking not allowed toward minimums except for single-family dwellings
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 Idaho municipalities
Rules change at the town line. Check the municipality your property is actually in.
Kootenai County