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Residential New Home Building Permit (New Single Family Dwelling/Duplex) — Lewiston, Idaho · Requirements sheet
Verified 2026-07-04 · Source: https://www.cityoflewiston.org/227/Building-Services
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Residential New Home Building Permit (New Single Family Dwelling/Duplex) in Lewiston, Idaho
Required for construction of new one- and two-family dwellings in the City of Lewiston, reviewed against the 2018 IRC and 2018 IECC as locally adopted and administered by the City of Lewiston Building Services division of Community Development. Applications are submitted via the online permit portal (GovWell) or through Building Services staff.
Verified 2026-07-04 · Source
When you need this permit
- Building permit required whenever a building or structure regulated by the code is altered, constructed, converted, demolished, enlarged, erected, improved, moved, removed, or repaired — City of Lewiston Permits Needed page
- Plans reviewed against the 2018 IRC and 2018 IECC as adopted by the City of Lewiston
- Building valuation calculated per IBC Section 109.3 as adopted and amended by the City of Lewiston, per the FY2026 Fee Schedule
- Separate electrical, plumbing, and mechanical permits required for all trade work
Required documents
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Fee schedule
Residential Building Permit Fee — valuation up to $500City of Lewiston FY2026 Fee Schedule (Resolution 2025-39, effective 10/1/2025), Schedule F.
$28.14
Residential Building Permit Fee — valuation $501 to $2,000City of Lewiston FY2026 Fee Schedule.
$28.14 for the first $500 plus $3.95 for each additional $100 or fraction thereof
Residential Building Permit Fee — valuation $2,001 to $25,000City of Lewiston FY2026 Fee Schedule.
$87.61 for the first $2,000 plus $17.19 for each additional $1,000 or fraction thereof
Residential Building Permit Fee — valuation $25,001 to $50,000City of Lewiston FY2026 Fee Schedule.
$483.01 for the first $25,000 plus $12.50 for each additional $1,000 or fraction thereof
Residential Building Permit Fee — valuation $50,001 to $100,000City of Lewiston FY2026 Fee Schedule.
$795.69 for the first $50,000 plus $8.66 for each additional $1,000 or fraction thereof
Residential Building Permit Fee — valuation $100,001 to $500,000City of Lewiston FY2026 Fee Schedule.
$1,228.78 for the first $100,000 plus $6.92 for each additional $1,000 or fraction thereof
Residential Building Permit Fee — valuation $500,001 to $1,000,000City of Lewiston FY2026 Fee Schedule.
$4,000.72 for the first $500,000 plus $5.81 for each additional $1,000 or fraction thereof
Residential Building Permit Fee — valuation $1,000,001 and upCity of Lewiston FY2026 Fee Schedule.
$6,910.39 for the first $1,000,000 plus $4.66 for each additional $1,000 or fraction thereof
Building Permit Plan Review FeeCity of Lewiston FY2026 Fee Schedule, Schedule F.
65% of the Building Permit Fee
Electrical Permit — New Single Family Dwelling (up to 1,500 sq ft)City of Lewiston FY2026 Fee Schedule, Schedule F — separate permit from the building permit.
$216.56, plus $72.20 for each additional 1,000 sq ft or portion thereof
Mechanical Permit — New Single Family Dwelling (up to 1,500 sq ft)City of Lewiston FY2026 Fee Schedule, Schedule F — separate permit from the building permit.
$216.56, plus $72.20 for each additional 1,000 sq ft or portion thereof
Plumbing Permit — New Single Family Dwelling (up to 1,500 sq ft)City of Lewiston FY2026 Fee Schedule, Schedule F — separate permit from the building permit.
$216.56, plus $72.20 for each additional 1,000 sq ft or portion thereof
New Duplex — Electrical, Mechanical, and Plumbing Permit (each trade)City of Lewiston FY2026 Fee Schedule, Schedule F.
$433.11
Review timeline
Plan reviewLewiston’s published plan-review target
8–14 business days
Inspection process
- 1
Foundation/Footing
Required prior to concrete pour, consistent with the adopted 2018 IRC.
- 2
Rough-In (Electrical, Mechanical, Plumbing)
Trade rough-in inspections for the separately permitted electrical, mechanical, and plumbing scopes.
- 3
Framing
Structural framing inspection after rough-ins are signed off.
- 4
Final
Final building and trade inspections prior to occupancy.
See the full Lewiston inspection guide — scheduling & re-inspection fees →
Tips
- New Single Family/Duplex plan review has a maximum turnaround of 14 calendar days (8 days for minor revisions) per the City of Lewiston Permit Review Schedule page — a shorter published maximum than Commercial's 21-day maximum.
- Electrical, mechanical, and plumbing permits for a new single-family dwelling are each a separate flat fee ($216.56 covering up to 1,500 sq ft) in addition to the valuation-based Building Permit Fee — confirm all four permits (building + 3 trades) are filed.
- For larger projects, applicants may request a preliminary Development Review Committee (DRC) meeting, where representatives from multiple City departments review the project together on a weekly basis.
Frequently asked questions
Lewiston requires a residential new home building permit (new single family dwelling/duplex) for: Building permit required whenever a building or structure regulated by the code is altered, constructed, converted, demolished, enlarged, erected, improved, moved, removed, or repaired — City of Lewiston Permits Needed page; Plans reviewed against the 2018 IRC and 2018 IECC as adopted by the City of Lewiston; Building valuation calculated per IBC Section 109.3 as adopted and amended by the City of Lewiston, per the FY2026 Fee Schedule; Separate electrical, plumbing, and mechanical permits required for all trade work. If your project isn't listed, confirm with City of Lewiston Building Services (Community Development Department) at (208) 746-1318, option 1 for Permit Representatives before starting work.
In Lewiston, the published Residential Building Permit Fee — valuation up to $500 is: $28.14. Additional published fees: Residential Building Permit Fee — valuation $501 to $2,000 — $28.14 for the first $500 plus $3.95 for each additional $100 or fraction thereof; Residential Building Permit Fee — valuation $2,001 to $25,000 — $87.61 for the first $2,000 plus $17.19 for each additional $1,000 or fraction thereof; Residential Building Permit Fee — valuation $25,001 to $50,000 — $483.01 for the first $25,000 plus $12.50 for each additional $1,000 or fraction thereof; Residential Building Permit Fee — valuation $50,001 to $100,000 — $795.69 for the first $50,000 plus $8.66 for each additional $1,000 or fraction thereof; Residential Building Permit Fee — valuation $100,001 to $500,000 — $1,228.78 for the first $100,000 plus $6.92 for each additional $1,000 or fraction thereof; Residential Building Permit Fee — valuation $500,001 to $1,000,000 — $4,000.72 for the first $500,000 plus $5.81 for each additional $1,000 or fraction thereof; Residential Building Permit Fee — valuation $1,000,001 and up — $6,910.39 for the first $1,000,000 plus $4.66 for each additional $1,000 or fraction thereof; Building Permit Plan Review Fee — 65% of the Building Permit Fee; Electrical Permit — New Single Family Dwelling (up to 1,500 sq ft) — $216.56, plus $72.20 for each additional 1,000 sq ft or portion thereof; Mechanical Permit — New Single Family Dwelling (up to 1,500 sq ft) — $216.56, plus $72.20 for each additional 1,000 sq ft or portion thereof; Plumbing Permit — New Single Family Dwelling (up to 1,500 sq ft) — $216.56, plus $72.20 for each additional 1,000 sq ft or portion thereof; New Duplex — Electrical, Mechanical, and Plumbing Permit (each trade) — $433.11. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.
Per the City of Lewiston Permit Review Schedule, New Single Family/Duplex plan review has a maximum turnaround of 14 calendar days (8 calendar days for minor revisions).
You'll need: Building Permit Application; Plan Review Documents Checklist. See the required-documents checklist on this page for details on each.
Lewiston requires 4 inspection(s) for a residential new home building permit (new single family dwelling/duplex), in order: Foundation/Footing, Rough-In (Electrical, Mechanical, Plumbing), Framing, Final. Schedule each through City of Lewiston Building Services (Community Development Department) ((208) 746-1318, option 1 for Permit Representatives).
Apply through City of Lewiston Building Services (Community Development Department) at 215 D Street, Lewiston, ID 83501 (P.O. Box 617, Lewiston, ID 83501). Phone: (208) 746-1318, option 1 for Permit Representatives, email: cd@cityoflewiston.org. Office hours: Monday-Friday, 8:00 AM to 5:00 PM. Building Official: Jeff Wolfe, (509) 254-3275, jwolfe@cityoflewiston.org. Permit Representatives: Lorrie Tanguay, (208) 746-1318 ext. 7203; Adrian Miller, (208) 746-1318 ext. 7263.. Official information: https://www.cityoflewiston.org/227/Building-Services.
Lewiston, Idaho has adopted: 2018 International Building Code (IBC), plus 2021 IBC Mass Timber provisions, adopted January 2025 for commercial construction — City of Lewiston Current Codes page (Lewiston City Code Sec. 10-1, Code Adoption).; 2018 International Residential Code (IRC), adopted January 2021, for one- and two-family dwellings and townhouses — City of Lewiston Current Codes page.; 2018 International Energy Conservation Code (IECC), adopted January 2021 — City of Lewiston Current Codes page.; 2018 International Mechanical Code (IMC), adopted January 2021 — City of Lewiston Current Codes page.; Idaho State Plumbing Code, based on the 2015 Uniform Plumbing Code (UPC), adopted January 2021 — City of Lewiston Current Codes page.; 2018 International Fire Code (IFC), adopted January 2021 — City of Lewiston Current Codes page.; 2023 National Electrical Code (NEC), adopted January 2025 — City of Lewiston Current Codes page.; 2018 International Existing Building Code (IEBC), adopted January 2021 — City of Lewiston Current Codes page.; The Current Codes page states local amendments to the adopted codes exist and directs readers to Lewiston City Code Sec. 10-1 (Code Adoption) for the specific amendment text; the amendments themselves are not individually enumerated on the Current Codes web page.. Local amendments apply — see the Lewiston overview page for the full list.
It depends on whether the property is inside Lewiston city limits or in the unincorporated county. The City of Lewiston has its own Building Services division (Community Development Department, 215 D Street) that issues and inspects building, electrical, plumbing, and mechanical permits for property within city limits. Nez Perce County's separate Planning and Building Department (Courthouse, 3rd Floor, 1230 Main Street) issues permits for unincorporated areas of the county.
Sources & verification
Verified against official sources. Last reviewed 2026-07-04.
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Lewiston building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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