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Residential Building Permit (New Construction) in Nampa, Idaho

Required for all new one- and two-family dwellings in Nampa. Covers new single-family homes, duplexes, and associated systems. Apply online through the CSS portal or in person at 500 12th Ave S.

Verified 2026-06-29 · Source

When you need this permit

  • Verify proposed use with Planning & Zoning before applying
  • Submit application through CSS online portal or in person
  • Plans must comply with 2018 IRC and 2018 IECC
  • Planning & Zoning Initial Review of Compliance required before submittal
  • Approved plans must remain on site during all inspections
  • Permit communication sent via email from noreply@cityofnampa.us — do not mark as spam

Required documents

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Fee schedule

Building Permit — valuation $1 to $500Nampa Exhibit A Schedule of Permit Fees (Dec 21, 2021)
$22.20 flat
Building Permit — valuation $501 to $2,000
$22.20 for first $500, plus $2.88 per each additional $100
Building Permit — valuation $2,001 to $25,000
$65.40 for first $2,000, plus $13.23 per each additional $1,000
Building Permit — valuation $25,001 to $50,000
$369.69 for first $25,000, plus $9.55 per each additional $1,000
Building Permit — valuation $50,001 to $100,000
$608.44 for first $50,000, plus $6.61 per each additional $1,000
Building Permit — valuation $100,001 to $500,000
$938.94 for first $100,000, plus $5.29 per each additional $1,000
Plan Review FeeAssessed at intake; Nampa Exhibit A item 6
65% of the building permit fee
New Residential (R-3/R-4) Plumbing/Mechanical/Electrical sub-permit — under 2,000 sq ft habitable areaNampa Exhibit A — New Group R sub-contractor permit fee
$180.00 per dwelling unit
New Residential (R-3/R-4) Plumbing/Mechanical/Electrical sub-permit — 2,000+ sq ft habitable area
$325.00 per dwelling unit
Reinspection (after first reinspection for same item)
$55.00 flat fee

Review timeline

Plan reviewNampa’s published plan-review target
15–15 business days

How long did your Residential Building Permit (New Construction) permit actually take in Nampa?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Footing / Foundation

    Before concrete pour — forms, rebar, anchor bolts; AM inspection available; city divided into four zones for underfloor/concrete inspections

  2. 2

    Framing

    After framing, sheathing, and rough-in trades complete — before insulation or wall cover

  3. 3

    Insulation / Energy

    Insulation installed per 2018 IECC before drywall

  4. 4

    Final

    All work complete per approved plans; Certificate of Occupancy issued upon passing

See the full Nampa inspection guide — scheduling & re-inspection fees →

Tips

  • Nampa's plan review target for new residential construction is 15 working days per the published Plan Review Processing Time Frames (Aug 2024).
  • Verify zoning and Planning & Zoning approval BEFORE submitting your building permit application — zoning non-compliance can delay or void your application.
  • Submit through the CSS online portal at nampaid-energovpub.tylerhost.net; create a free account to track status and upload corrections.
  • All inspections must be requested through CSS before 12:00 AM the prior day for next-business-day scheduling.
  • Frost depth is 24 inches minimum for full foundations; accessory structures under 600 sq ft need only 12 inches depth on a 12-inch wide footing.
  • Approved plans must be on site at all inspections. Failure to have plans ready may result in a $55 reinspection fee.

Frequently asked questions

Yes. The City of Nampa requires verification with the Planning & Zoning Department to confirm the proposed use is compatible with zoning and that no other entitlements are required before submitting a building permit application.

In Nampa, the published Building Permit — valuation $1 to $500 is: $22.20 flat. Additional published fees: Building Permit — valuation $501 to $2,000 — $22.20 for first $500, plus $2.88 per each additional $100; Building Permit — valuation $2,001 to $25,000 — $65.40 for first $2,000, plus $13.23 per each additional $1,000; Building Permit — valuation $25,001 to $50,000 — $369.69 for first $25,000, plus $9.55 per each additional $1,000; Building Permit — valuation $50,001 to $100,000 — $608.44 for first $50,000, plus $6.61 per each additional $1,000; Building Permit — valuation $100,001 to $500,000 — $938.94 for first $100,000, plus $5.29 per each additional $1,000; Plan Review Fee — 65% of the building permit fee; New Residential (R-3/R-4) Plumbing/Mechanical/Electrical sub-permit — under 2,000 sq ft habitable area — $180.00 per dwelling unit; New Residential (R-3/R-4) Plumbing/Mechanical/Electrical sub-permit — 2,000+ sq ft habitable area — $325.00 per dwelling unit; Reinspection (after first reinspection for same item) — $55.00 flat fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Per Nampa's published Plan Review Processing Time Frames (Aug 14, 2024), new residential construction averages 15 working days for the first plan review. Actual total permit processing time is longer and varies with workload and correction cycles.

You'll need: New Residential Building Permit Application & Checklist (Feb 2026); Construction Drawings; Energy Code Compliance Documentation. Depending on your project, Nampa may also ask for: IECC System Commissioning Form. See the required-documents checklist on this page for details on each.

Nampa requires 4 inspection(s) for a residential building permit (new construction), in order: Footing / Foundation, Framing, Insulation / Energy, Final. Schedule each through Nampa Building Safety & Code Department ((208) 468-5435).

Apply through Nampa Building Safety & Code Department at 500 12th Ave South, Nampa, ID 83651. Phone: (208) 468-5435, email: buildinginspections@cityofnampa.us. Office hours: Mon–Fri 8:00 AM – 5:00 PM. Official information: https://www.cityofnampa.us/163/Building-Safety-Code.

Nampa, Idaho has adopted: 2018 International Residential Code (IRC); 2018 International Building Code (IBC); 2018 International Existing Building Code (IEBC); 2018 International Fire Code (IFC); 2018 International Energy Conservation Code (IECC) — Residential and Commercial; 2018 International Mechanical Code (IMC); 2018 International Fuel Gas Code (IFGC); 2017 Idaho State Plumbing Code; 2023 National Electrical Code (NEC); 2009 ICC/ANSI/A117.1 (Accessibility); 2015 NFPA A30 Code for Motor Fuel Dispensing Facilities and Repair Garages; 2015 NFPA 99 Health Care Facilities Code. Local amendments apply — see the Nampa overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-06-29.

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 Nampa building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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