BuildingPermitCost Idaho permit fees at a glance
This page covers 1 city and 2 counties in Idaho, each priced from its own official fee schedule. For the same $75,000 addition, totals run from $904.86 in Boise to $1,064.30 in Canyon County, with a Idaho median of $927.00, 13% above the median of $820.58 across all 267 places on this site.
The most common pricing method here is a fee table based on project value (3 of 3). For project value, 1 place uses the higher of your bid and a valuation table and 1 place uses a local valuation table.
3 of 3 charge a separate plan review fee.
2 of 3 schedules state an effective date, 2 of them from 2025 or later. Every page shows its effective date and the date we last checked it against the official source.
| Project | Idaho median | National median | Places |
|---|---|---|---|
| $25,000 remodel | $440.80 | $380.00 | 3 |
| $75,000 addition | $927.00 | $820.58 | 3 |
| $350,000 new home | $2,670.75 | $2,918.63 | 3 |
Calculate your own project · Compare Idaho places side by side · Fees people often miss
Cities
| Jurisdiction | $25k remodel | $75k addition | $350k new home | Verified |
|---|---|---|---|---|
| Boise | $435.71 | $904.86 | $2,646.71 | Nov 4, 2026 |
Counties
| Jurisdiction | $25k remodel | $75k addition | $350k new home | Verified |
|---|---|---|---|---|
| Ada County | $477.00 | $927.00 | $2,670.75 | Nov 5, 2026 |
| Canyon County | $440.80 | $1,064.30 | $4,877.80 | Nov 5, 2026 |
Idaho permit fee questions
How much is a building permit in Idaho?
It depends on the city or county, because each sets its own fees. Across the 3 places we cover in Idaho, the median for a $75,000 addition is $927.00 and for a $350,000 new home $2,670.75, including plan review and required surcharges.
Which Idaho places have the lowest and highest permit fees?
For a $75,000 addition, the lowest total we found is $904.86 in Boise, ID and the highest is $1,064.30 in Canyon County, ID. The tables on this page list every place we cover.
Totals use each jurisdiction's own formula for a 300 sq ft remodel, a 400 sq ft addition and a 2,400 sq ft wood-frame home. Trade permits and conditional fees are not included. Fees are estimates based on the official schedules; confirm with the permit office before applying.