ADUs are allowed in HaileyTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Hailey, ID
Is your property eligible for an ADU?
# of Parcels
4,581
Zoning districts
14
Median Parcel Size
0.21 acres
Zoning Districts:
4,576 parcels · 14 districts
GR
40%(1,834)
LR1
33%(1,502)
B
8%(385)
LR2
5%(247)
Other
13%(608)
ADU Rules
What can you build in Hailey, ID?
Hailey, 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
- –An internal in-home apartment may be no more than 66% of the principal building’s gross floor area.
- –An internal in-home apartment is capped by lot size: 900 sq ft for lots up to 7,000 sq ft; 950 sq ft for 7,001–8,000 sq ft; 1,000 sq ft for 8,001 sq ft or larger.
Detached ADU Size Limits
- –Maximum detached ADU size is 66% of the principal building’s gross square footage.
- –Maximum detached ADU size by lot area: up to 7,000 sq ft lot—900 sq ft; 7,001–8,000—950 sq ft; 8,001+—1,000 sq ft.
Owner Occupancy
- –If one unit is short-term, the other must be owner-occupied.
Parking
- –1 space per ADU; if the primary dwelling is under 1,000 sq ft, total on-site parking must be at least 2 (existing SF parking may count toward this); ADU parking must be on-site; ROW parking for single-family units does not apply; mitigation for light trespass may be required.
Rental Restrictions
- –Only one unit on a lot may be used for short-term occupancy; the other unit must be owner-occupied or rented long-term (31+ days).
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