Idaho (ID) Building Permit & Cost Directory
Explore municipal permit requirements, Bureau of Labor Statistics (BLS) contractor wages, and real-time residential cost calculators across all 44 counties in Idaho for 2026.
Idaho Residential Building Code & Licensing Overview
Statewide compliance standards and contractor mandates
Residential home renovations in Idaho are regulated under the state building code adapted from the International Residential Code (IRC). Permits are mandated for all structural repairs, complete roof replacements exceeding 100-200 square feet, HVAC compressor and furnace retrofits, and electrical service upgrades.
General contractors and trade specialists must carry valid state licenses and verified worker's compensation coverage.
Homeowners may pull permits on their primary dwelling, assuming full civil liability for code compliance and passing inspections.
Find Your County in ID
Type your county or city name below to instantly isolate local building departments and cost calculators.
All Idaho Counties (44)
Click any county below to calculate local permit costs, view inspector notes, and check trade wages.
Ada County
Est. Permit: $134 • BLS $28.48/hr
Adams County
Est. Permit: $134 • BLS $28.48/hr
Bannock County
Est. Permit: $134 • BLS $28.48/hr
Bear Lake County
Est. Permit: $134 • BLS $28.48/hr
Benewah County
Est. Permit: $134 • BLS $28.48/hr
Bingham County
Est. Permit: $134 • BLS $28.48/hr
Blaine County
Est. Permit: $134 • BLS $28.48/hr
Boise County
Est. Permit: $134 • BLS $28.48/hr
Bonner County
Est. Permit: $134 • BLS $28.48/hr
Bonneville County
Est. Permit: $134 • BLS $28.48/hr
Boundary County
Est. Permit: $134 • BLS $28.48/hr
Butte County
Est. Permit: $134 • BLS $28.48/hr
Camas County
Est. Permit: $134 • BLS $28.48/hr
Canyon County
Est. Permit: $134 • BLS $28.48/hr
Caribou County
Est. Permit: $134 • BLS $28.48/hr
Cassia County
Est. Permit: $134 • BLS $28.48/hr
Clark County
Est. Permit: $134 • BLS $28.48/hr
Clearwater County
Est. Permit: $134 • BLS $28.48/hr
Custer County
Est. Permit: $134 • BLS $28.48/hr
Elmore County
Est. Permit: $134 • BLS $28.48/hr
Franklin County
Est. Permit: $134 • BLS $28.48/hr
Fremont County
Est. Permit: $134 • BLS $28.48/hr
Gem County
Est. Permit: $134 • BLS $28.48/hr
Gooding County
Est. Permit: $134 • BLS $28.48/hr
Idaho County
Est. Permit: $134 • BLS $28.48/hr
Jefferson County
Est. Permit: $134 • BLS $28.48/hr
Jerome County
Est. Permit: $134 • BLS $28.48/hr
Kootenai County
Est. Permit: $134 • BLS $28.48/hr
Latah County
Est. Permit: $134 • BLS $28.48/hr
Lemhi County
Est. Permit: $134 • BLS $28.48/hr
Lewis County
Est. Permit: $134 • BLS $28.48/hr
Lincoln County
Est. Permit: $134 • BLS $28.48/hr
Madison County
Est. Permit: $134 • BLS $28.48/hr
Minidoka County
Est. Permit: $134 • BLS $28.48/hr
Nez Perce County
Est. Permit: $134 • BLS $28.48/hr
Oneida County
Est. Permit: $134 • BLS $28.48/hr
Owyhee County
Est. Permit: $134 • BLS $28.48/hr
Payette County
Est. Permit: $134 • BLS $28.48/hr
Power County
Est. Permit: $134 • BLS $28.48/hr
Shoshone County
Est. Permit: $134 • BLS $28.48/hr
Teton County
Est. Permit: $134 • BLS $28.48/hr
Twin Falls County
Est. Permit: $134 • BLS $28.48/hr
Valley County
Est. Permit: $134 • BLS $28.48/hr
Washington County
Est. Permit: $134 • BLS $28.48/hr
Frequently Asked Questions: Idaho Building Permits
How much does a building permit typically cost in Idaho?
Across Idaho, the baseline residential permit filing fee averages $133.54. Total permit costs are calculated based on valuation formulas (typically $5 to $15 per $1,000 of project value) plus electrical, mechanical, and plan review inspection surcharges.
Do I need a building permit for roof replacement in Idaho?
Yes. In virtually all Idaho county jurisdictions, roof replacements involving more than 100 square feet (1 roofing square) or involving any structural decking, rafter, or truss repair require a formal building permit and at least one in-progress or final roof inspection.
What is the average trade wage for contractors in Idaho?
According to the latest Bureau of Labor Statistics (BLS) Occupational Employment and Wage Statistics (OEWS), the median hourly rate for licensed residential construction trades in Idaho is approximately $28.48/hr, varying based on metropolitan vs rural location.