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
- Req
New Residential Building Permit Application & Checklist (Feb 2026)
Official Nampa building permit application and submittal checklist for new residential construction; available at cityofnampa.us/DocumentCenter/View/20380
- Req
Construction Drawings
Complete plan set including site plan, floor plans, elevations, sections, and structural details
- Req
Energy Code Compliance Documentation
Rescheck or equivalent demonstrating compliance with 2018 IECC
- Opt
IECC System Commissioning Form
Required for HVAC commissioning per 2018 IECC; available on city website
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit — valuation $1 to $500 | $22.20 flat | Nampa Exhibit A Schedule of Permit Fees (Dec 21, 2021) |
| 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 | Assessed at intake; Nampa Exhibit A item 6 |
| New Residential (R-3/R-4) Plumbing/Mechanical/Electrical sub-permit — under 2,000 sq ft habitable area | $180.00 per dwelling unit | Nampa Exhibit A — New Group R sub-contractor permit fee |
| 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
15–15 business days
Nampa’s published plan-review target
Inspection process
- 1
Footing / Foundation
Before concrete pour — forms, rebar, anchor bolts; AM inspection available; city divided into four zones for underfloor/concrete inspections
- 2
Framing
After framing, sheathing, and rough-in trades complete — before insulation or wall cover
- 3
Insulation / Energy
Insulation installed per 2018 IECC before drywall
- 4
Final
All work complete per approved plans; Certificate of Occupancy issued upon passing
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
- How long does a new residential building permit take in Nampa?
- 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.
- Do I need to check with Planning & Zoning before applying for a building permit in Nampa?
- 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.
Sources & verification
Verified against official sources. Last reviewed 2026-06-29.
- Nampa Building Safety & Code Department — official building department
- Building Permit Process | City of Nampa
- New Residential Building Permit Application & Checklist (Feb 2026)
- Nampa Exhibit A — Schedule of Permit Fees (Dec 21, 2021)
- Plan Review Processing Time Frames (Aug 14, 2024)
- Residential FAQ | City of Nampa
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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