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
- Req
Residential Solar Permit Application Packet
Nampa's dedicated solar permit application packet; available at cityofnampa.us/DocumentCenter/View/15796
- Req
Solar Site Plan
Roof plan or ground layout showing panel placement and access pathways
- Req
Electrical Single-Line Diagram
System wiring from panels to inverter to main panel
- Req
Structural Analysis / Roof Load Calculation
Confirming existing roof structure can support panel weight; roof snow load in Nampa is 25 PSF minimum
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Solar permit — building permit (valuation-based) | Per Exhibit A valuation table based on project value | Nampa Exhibit A Schedule of Permit Fees (Dec 2021) |
| Plan Review Fee | 65% of the building permit fee | Assessed at intake |
| Electrical sub-permit for solar wiring (additions/remodels) | $36.00 base + $15.00 per circuit extension + $15.00 miscellaneous equipment | Nampa Exhibit A — Electrical Extras |
| Reinspection (after first reinspection for same item) | $55.00 flat fee | — |
Review timeline
10–10 business days
Nampa’s published plan-review target
Inspection process
- 1
Rough Electrical
Conduit runs, wire sizing, disconnect placement before energizing
- 2
Final — Building / Structural
Panel mounting, racking attachment, roof penetration sealing verified
- 3
Final — Electrical
Electrical connections, inverter installation, and interconnection verified
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
- How do I get a solar permit in Nampa?
- 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.
- Nampa Building Safety & Code Department — official building department
- Residential Solar Permit Application Packet
- Building Permit Process | City of Nampa
- Nampa Exhibit A — Schedule of Permit Fees (Dec 21, 2021)
- Plan Review Processing Time Frames (Aug 14, 2024)
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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