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Solar Photovoltaic (PV) Permit in Nampa, Idaho

Required for installation of rooftop or ground-mounted solar photovoltaic systems on residential properties in Nampa. A dedicated Solar Permit Application packet is available from the city.

Verified 2026-06-29 · Source

When you need this permit

  • Rooftop solar panel installation
  • Ground-mounted solar array installation
  • Submit the Nampa Solar Permit Application packet
  • Electrical work must comply with 2023 NEC
  • Structural roof load calculations required

Required documents

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Fee schedule

Solar permit — building permit (valuation-based)Nampa Exhibit A Schedule of Permit Fees (Dec 2021)
Per Exhibit A valuation table based on project value
Plan Review FeeAssessed at intake
65% of the building permit fee
Electrical sub-permit for solar wiring (additions/remodels)Nampa Exhibit A — Electrical Extras
$36.00 base + $15.00 per circuit extension + $15.00 miscellaneous equipment
Reinspection (after first reinspection for same item)
$55.00 flat fee

Review timeline

Plan reviewNampa’s published plan-review target
10–10 business days

How long did your Solar Photovoltaic (PV) Permit 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

    Rough Electrical

    Conduit runs, wire sizing, disconnect placement before energizing

  2. 2

    Final — Building / Structural

    Panel mounting, racking attachment, roof penetration sealing verified

  3. 3

    Final — Electrical

    Electrical connections, inverter installation, and interconnection verified

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

Tips

  • Nampa's plan review target for residential solar is 10 working days per the published Plan Review Processing Time Frames (Aug 2024).
  • Use the dedicated Nampa Solar Permit Application packet — it consolidates building and electrical requirements.
  • Nampa's roof snow load minimum is 25 PSF — structural calculations must account for both panel weight and snow load.
  • Idaho Power (the primary utility serving Nampa) interconnection approval is required before the system can be energized.

Frequently asked questions

Nampa requires a solar photovoltaic (pv) permit for: Rooftop solar panel installation; Ground-mounted solar array installation; Submit the Nampa Solar Permit Application packet; Electrical work must comply with 2023 NEC; Structural roof load calculations required. If your project isn't listed, confirm with Nampa Building Safety & Code Department at (208) 468-5435 before starting work.

In Nampa, the published Solar permit — building permit (valuation-based) is: Per Exhibit A valuation table based on project value. Additional published fees: Plan Review Fee — 65% of the building permit fee; Electrical sub-permit for solar wiring (additions/remodels) — $36.00 base + $15.00 per circuit extension + $15.00 miscellaneous equipment; 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.

Nampa's published plan-review target for a solar photovoltaic (pv) permit is 10–10 business days.

You'll need: Residential Solar Permit Application Packet; Solar Site Plan; Electrical Single-Line Diagram; Structural Analysis / Roof Load Calculation. See the required-documents checklist on this page for details on each.

Nampa requires 3 inspection(s) for a solar photovoltaic (pv) permit, in order: Rough Electrical, Final — Building / Structural, Final — Electrical. 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.

Use Nampa's dedicated Solar Permit Application packet (available at cityofnampa.us/DocumentCenter/View/15796). Submit through the CSS online portal with a site plan, single-line electrical diagram, and structural calculations. Plan review target is 10 working days.

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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Solar Photovoltaic (PV) Permit in other cities

American Falls, IdahoAmmon, IdahoBlackfoot, IdahoBoise, IdahoBuhl, IdahoBurley, IdahoCaldwell, IdahoCascade, Idaho

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