Do I Need a Permit to Replace My Roof in Idaho?
Roof replacement permit requirements. When you need a permit, the two-layer rule, and what inspectors check.
Yes — all roof replacements and re-roofing projects require a permit.
Idaho-specific rules
Adopted code: 2018 IBC / 2020 Idaho Residential Code (2018 IRC + Idaho amendments) — the statewide baseline under the Idaho Building Code Act, effective January 1, 2021.
Always Need a Permit
Most jurisdictions require a roofing permit for all roof replacements, whether you're doing a full tear-off or an overlay. The permit ensures proper installation of underlayment, flashing, ice and water shield, and ventilation. Roofing permits are the fastest to obtain — often same-day approval.
The Two-Layer Rule
The IRC/IBC allow a maximum of two roofing layers in most adopting jurisdictions. If your home already has two layers of shingles, a full tear-off is required before installing new roofing. This is a common surprise for homeowners — the inspector will check during the deck inspection.
What Inspectors Check
Two inspections: deck/substrate (after tear-off, verify sheathing condition and replace damaged decking) and final (ice and water shield in valleys and eaves, proper flashing at penetrations and walls, drip edge, adequate ventilation, and correct nailing pattern).
Insurance Claims
If you're replacing your roof due to hail or wind damage, the insurance claim process is separate from the permit. Your roofer will typically handle the permit while you work with your adjuster. Make sure the replacement materials match or exceed what's specified in the insurance scope.
Yes, always. Roofing permits are fast ($50-$100, often same-day) with two inspections. No reason to skip it.
Permit fees by city in Idaho
Verified from each city’s published fee schedule. Where a city has no separate fee listed for this project, open the city page for the current requirements and amount.
| City | Permit fee | Source |
|---|---|---|
| American Falls | $23.50Verifiedvia Consolidated Building-Development Permit (New Construction, Additions, Alterations, Repairs, Moving, Demolition, Signs, Grading) | Consolidated Building-Development Permit (New Construction, Additions, Alterations, Repairs, Moving, Demolition, Signs, Grading) → |
| Ammon | 1% of the contract price, not to exceed $100.00Verified | Re-Roofing Permit → |
| Blackfoot | $100Verifiedvia Residential Building Permit (New Construction / Addition / Remodel) | Residential Building Permit (New Construction / Addition / Remodel) → |
| Boise | Valuation-based per Table 1-A; residential plan review 20% of permit feeVerified | Residential Roofing Permit → |
| Buhl | $23.50Verifiedvia Building Permit (Residential New Construction, Additions, Remodels, Repairs) | Building Permit (Residential New Construction, Additions, Remodels, Repairs) → |
| Burley | Not published as a fixed valuation-tier table; calculated by City Building Department staff based on declared project valuationVerifiedvia Building Permit (New / Addition / Alteration / Repair / Roof / Move / Remove) | Building Permit (New / Addition / Alteration / Repair / Roof / Move / Remove) → |
| Caldwell | $34.00 flatVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Cascade | 40% of the building permit fee (65% of the building permit fee if an outside plan reviewer is used)Verifiedvia Residential Building Permit | Residential Building Permit → |
| Chubbuck | $27.00 base feeVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| City of St. Maries | $24.00Verifiedvia Building Permit | Building Permit → |
| Coeur d'Alene | $69.25 minimum (valuation up to $500-$1,700 tier), scaling per the City of Coeur d'Alene Building Permit Fee ScheduleVerified | Re-Roof Permit → |
| Donnelly | $24.00Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Driggs | $305Verifiedvia Residential Building Permit | Residential Building Permit → |
| Eagle | Cost up to $20,000: multiply by 3% plus $60; cost $20,001–$100,000: subtract $20,000, multiply by 2%, plus $660; cost over $100,001: subtract $100,000, multiply by 1%, plus $2,260Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Emmett | See city page for the current Residential Building Permit fee | Residential Building Permit → |
| Fruitland | $23.50Verifiedvia Building Permit (New Construction, Additions, Remodels) | Building Permit (New Construction, Additions, Remodels) → |
| Garden City | $150.00Verifiedvia Residential Building Permit (New Construction / Addition / Remodel) | Residential Building Permit (New Construction / Addition / Remodel) → |
| Grangeville | $15.00Verifiedvia Residential Building Permit (New Construction, Additions, Alterations, Repairs) | Residential Building Permit (New Construction, Additions, Alterations, Repairs) → |
| Greenleaf | $50.00 flat, due upon submission of all building permit applicationsVerifiedvia Residential Building Permit (New Construction / Addition / Alteration) | Residential Building Permit (New Construction / Addition / Alteration) → |
| Hailey | $27.78Verifiedvia Building Permit (New Construction, Additions, Remodels — Commercial & Residential) | Building Permit (New Construction, Additions, Remodels — Commercial & Residential) → |
| Harrison | Per Table 1-A of the 1997 Uniform Building Code, applied to project valuation determined from ICBO Building Valuation Data (or the most recent available data if that publication has been discontinued)Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Hayden | $50.00 for the first $1,300 plus $3.05 for each additional $100 or fraction thereofVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Heyburn | See city page for the current Residential Home Permit (New Construction — Single Family, Duplex, Zero Lot Line, Townhouse) fee | Residential Home Permit (New Construction — Single Family, Duplex, Zero Lot Line, Townhouse) → |
| Idaho City | $23.50Verifiedvia Residential Building Permit (New Construction, Additions & Alterations) | Residential Building Permit (New Construction, Additions & Alterations) → |
| Idaho Falls | 1% of valuation, minimum fee $30.18, maximum fee $110.00Verified | Re-Roofing Permit → |
| Jerome | $23.50Verifiedvia Residential Building Permit | Residential Building Permit → |
| Kellogg | See city page for the current Residential Building Permit (New Construction / Addition / Alteration) fee | Residential Building Permit (New Construction / Addition / Alteration) → |
| Ketchum | $24.75 for the first $500, plus $3.20 for each additional $100 or fraction thereofVerifiedvia Residential Building Permit (New Construction / Additions) | Residential Building Permit (New Construction / Additions) → |
| Kimberly | $150.00Verifiedvia Building Permit (New Construction, Additions, Remodels, Repairs, Demolition, Re-Roof) | Building Permit (New Construction, Additions, Remodels, Repairs, Demolition, Re-Roof) → |
| Kootenai County | $26.67 per sq ft valuation, run through the Exhibit A fee formulaVerified | Re-Roofing Permit → |
| Kuna | $70Verifiedvia Residential Building Permit | Residential Building Permit → |
| Lewiston | $28.14Verifiedvia Residential New Home Building Permit (New Single Family Dwelling/Duplex) | Residential New Home Building Permit (New Single Family Dwelling/Duplex) → |
| Malad City | See city page for the current Residential Building Permit (New Construction / Addition / Accessory) fee | Residential Building Permit (New Construction / Addition / Accessory) → |
| McCall | Calculated using 50% of project valuation against the standard Building Permit fee table (Resolution 24-11): $23.50 (up to $500) through $5,608.75 + $3.65/$1,000 (over $1,000,000)Verified | Roof Permit → |
| Melba | See city page for the current Residential Building Permit (New Dwelling / Addition / Remodel) fee | Residential Building Permit (New Dwelling / Addition / Remodel) → |
| Meridian | $150 (non-refundable; applied to building permit fee)Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Middleton | $250.00Verifiedvia New Residential Building Permit | New Residential Building Permit → |
| Minidoka County (Building Authority for Unincorporated County and the Cities of Acequia, Minidoka, Paul, and Rupert) | See city page for the current Residential Building Permit (New Construction, Addition, Remodel) fee | Residential Building Permit (New Construction, Addition, Remodel) → |
| Moscow | $27.50Verifiedvia Residential Building Permit (New Single-Family Dwelling / Addition) | Residential Building Permit (New Single-Family Dwelling / Addition) → |
| Mountain Home | See city page for the current Residential Building Permit (New Construction) fee | Residential Building Permit (New Construction) → |
| Nampa | Per Exhibit A valuation table; residential re-roofs typically fall in $22.20–$65.40 range for most projectsVerified | Residential Roofing Permit (Re-roof) → |
| Notus | See city page for the current Residential Building Permit (New Construction, Additions, Remodels) fee | Residential Building Permit (New Construction, Additions, Remodels) → |
| Osburn | $140.00 per sq. ft. (valuation input)Verifiedvia Residential Building Permit (New Construction / Addition / Alteration) | Residential Building Permit (New Construction / Addition / Alteration) → |
| Payette | $24Verifiedvia Residential Building Permit | Residential Building Permit → |
| Plummer | $23.50Verifiedvia Residential Building Permit | Residential Building Permit → |
| Pocatello | $65Verified | Re-Roof / Roof Overlay Permit → |
| Post Falls | $150.00 Flat FeeVerified | Re-Roofing Permit → |
| Preston | Set by city inspector, based on valuationVerifiedvia Building Permit (New Construction / Additions / Accessory Buildings) | Building Permit (New Construction / Additions / Accessory Buildings) → |
| Priest River | Per Table 1-A of the 1997 Uniform Building Code (valuation-based)Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Rathdrum | Permit Fee = Gross Sq. Ft. Area x Sq. Ft. Construction Cost x 0.008099; R-3 Residential (one- and two-family) construction cost is $170.80/sq ft per the ICC August 2025 Square Foot Construction Cost Table as adopted by the CityVerifiedvia Residential Single Family Building Permit (New Construction) | Residential Single Family Building Permit (New Construction) → |
| Rexburg | $2,000.00Verifiedvia Residential Building Permit (Single Family Home / Townhome) | Residential Building Permit (Single Family Home / Townhome) → |
| Rigby | $26.46Verifiedvia Residential Building Permit (Single-Family Dwelling, Townhouse, New Construction & Additions) | Residential Building Permit (Single-Family Dwelling, Townhouse, New Construction & Additions) → |
| Rupert | Calculated from Project Value using the Building Department's fee schedule; no dollar-per-valuation-bracket table was found published onlineVerifiedvia Residential Building Permit | Residential Building Permit → |
| Salmon | $24Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Sandpoint | $61.10Verifiedvia Residential Building Permit (New Single-Family Construction) | Residential Building Permit (New Single-Family Construction) → |
| Shelley | $21.00Verifiedvia Building Permit (New Construction, Additions, Remodels) | Building Permit (New Construction, Additions, Remodels) → |
| Soda Springs | $25.00Verifiedvia Residential Building Permit (New Construction / Addition / Remodel) | Residential Building Permit (New Construction / Addition / Remodel) → |
| Spirit Lake | See city page for the current Residential Building Permit (New Construction) fee | Residential Building Permit (New Construction) → |
| Star | $100.00Verifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Twin Falls | $22.00Verified | Re-Roofing Permit → |
| Unincorporated Ada County | Valuation-based per Ada County 2025 Fee Schedule (Resolution 3149, effective November 2025); see Building-Fees.pdf at adacounty.id.gov/developmentservices/permitting-division/fees/Verifiedvia Residential Building Permit (New Construction / Addition) | Residential Building Permit (New Construction / Addition) → |
| Unincorporated Bannock County | $23.00Verifiedvia Residential Building Permit (New Construction / Addition) | Residential Building Permit (New Construction / Addition) → |
| Unincorporated Bingham County | $1–$500: $16.50 | $501–$2,000: $16.50 + $2.20/each add'l $100 | $2,001–$25,000: $49.50 + $9.90/each add'l $1,000 | $25,001–$50,000: $277.30 + $7.15/each add'l $1,000 | $50,001–$100,000: $455.95 + $4.95/each add'l $1,000 | $100,001–$500,000: $762.85 + $3.85/each add'l $1,000 | $500,001–$1,000,000: $2,243.45 + $3.30/each add'l $1,000 | $1,000,001–$5,000,000: $3,915.45 + $2.20/each add'l $1,000Verifiedvia Residential Building Permit (New Construction / Addition / Remodel) | Residential Building Permit (New Construction / Addition / Remodel) → |
| Unincorporated Bonneville County | See city page for the current Residential Building Permit (New Construction / Addition) fee | Residential Building Permit (New Construction / Addition) → |
| Unincorporated Canyon County | $280.00Verifiedvia Residential Building Permit (New Construction / Addition / Remodel) | Residential Building Permit (New Construction / Addition / Remodel) → |
| Unincorporated Cassia County | Calculated based on square footage using the IBC 2003 Valuation Table 1Verifiedvia Residential Building Permit (New Construction / Addition) | Residential Building Permit (New Construction / Addition) → |
| Unincorporated Elmore County | $100.00Verifiedvia Residential Building Permit (New Construction / Addition) | Residential Building Permit (New Construction / Addition) → |
| Unincorporated Franklin County | 1% of the assessed value of the proposed buildingVerifiedvia Residential Building Permit (New Construction / Remodel Changing Outside Dimensions) | Residential Building Permit (New Construction / Remodel Changing Outside Dimensions) → |
| Unincorporated Gem County | $1–$500: no fee listed at base tier; $501–$2,000: $23.50 for the first $500 plus $3.05 for each additional $100 or fraction thereof; $2,001–$25,000: $69.25 for the first $2,000 plus $14.00 per additional $1,000 or fraction; $25,001–$50,000: $391.25 for the first $25,000 plus $10.10 per additional $1,000; $50,001–$100,000: $643.75 for the first $50,000 plus $7.00 per additional $1,000; $100,001–$500,000: $993.75 for the first $100,000 plus $5.60 per additional $1,000; $500,001–$1,000,000: $3,233.75 for the first $500,000 plus $4.75 per additional $1,000; $1,000,001+: $5,608.75 for the first $1,000,000 plus $3.65 per additional $1,000Verifiedvia Residential Building Permit (New Construction / Addition / Alteration) | Residential Building Permit (New Construction / Addition / Alteration) → |
| Unincorporated Jefferson County | $26.46Verifiedvia Residential Building Permit (Single-Family Dwelling / New Construction, Additions, ADUs) | Residential Building Permit (Single-Family Dwelling / New Construction, Additions, ADUs) → |
| Unincorporated Latah County | $50.00 flatVerifiedvia Residential/General Building Permit | Residential/General Building Permit → |
| Unincorporated Madison County | $500 for dwellings/non-accessory structures; $100 for accessory structuresVerifiedvia Residential Building Permit (New Construction / Addition / Accessory Structure) | Residential Building Permit (New Construction / Addition / Accessory Structure) → |
| Unincorporated Nez Perce County | $112.65 per sq ft (minimum)Verifiedvia Single Family Residence Building Permit | Single Family Residence Building Permit → |
| Unincorporated Power County | $24 for valuation $1–$500; $24 + $3 per additional $100 (or fraction) up to $2,000; $69 + $11 per additional $1,000 up to $40,000; $487 + $9 per additional $1,000 up to $100,000; $1,027 + $7 per additional $1,000 up to $500,000; $3,827 + $5 per additional $1,000 up to $1,000,000; $6,327 + $3 per additional $1,000 up to $5,000,000; $18,327 + $1 per additional $1,000 above $5,000,000Verifiedvia Residential Building Permit (New Construction / Addition) | Residential Building Permit (New Construction / Addition) → |
| Unincorporated Twin Falls County | $82.65 per sq ft (Single Family Home); Finished Basement $42.78/sq ft; Unfinished Basement $32.29/sq ft; Carport/Lean-to $32.12/sq ft; Ag Shop/Res Shop $41.71/sq ft; Deck/Covered Porch/Patio $18.66/sq ftVerifiedvia Residential Building Permit (New Construction / Addition) | Residential Building Permit (New Construction / Addition) → |
| Unincorporated Valley County | See city page for the current Residential Building Permit (New Construction / Addition / Alteration) fee | Residential Building Permit (New Construction / Addition / Alteration) → |
| Victor | $22.50Verifiedvia Standard Building Permit (Residential New Construction) | Standard Building Permit (Residential New Construction) → |
| Wallace | See city page for the current Residential Building Permit (New Construction / Addition / Alteration) fee | Residential Building Permit (New Construction / Addition / Alteration) → |
| Wilder | $24.00Verifiedvia Residential Building Permit (New Construction / Addition / Remodel / Accessory Structure) | Residential Building Permit (New Construction / Addition / Remodel / Accessory Structure) → |
| Worley | $23.50 for valuation $1-$500; $23.50 for the first $500 plus $3.05 per additional $100 (or fraction) to $2,000; $69.25 for the first $2,000 plus $14 per additional $1,000 to $25,000; scaling further per Table 1-A for higher valuationsVerifiedvia Residential Building Permit | Residential Building Permit → |