ADUs are allowed in BellevueTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Bellevue, ID
Is your property eligible for an ADU?
# of Parcels
1,396
Zoning districts
6
Median Parcel Size
0.21 acres
Zoning Districts:
1,395 parcels · 6 districts
GR
74%(1,036)
B
11%(159)
T
6%(79)
LI
5%(73)
Other
3%(48)
ADU Rules
What can you build in Bellevue, ID?
Bellevue, 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 gross floor area for attached/internal ADUs by lot size in GR, Transitional, and LB/R: 600 sf (6,000–7,999 sf lots), 700 sf (8,000–9,999), 850 sf (10,000–19,999), 1,000 sf (20,000–43,560), and 1,200 sf (>43,560); in LB/R it must also be smaller than the business floor area in the same building.
Detached ADU Size Limits
- –Maximum detached ADU size by lot area: 600 sq ft (6,000–7,999 sq ft), 700 (8,000–9,999), 850 (10,000–19,999), 1,000 (20,000–43,560), 1,200 (>43,560). Detached ADUs not allowed in LB/R.
Parking
- –1 space/ADU for 1-bed; 2 spaces for 2–3 bed; on-street spaces may count if they meet city standards; ADU-specific bedroom-based standard applied during design review.
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.
Blaine County