Do I Need a Permit to Install an EV Charger in Idaho?
Quick Answer
Level 2 (240V) chargers yes. Level 1 (120V plug-in) no.
Idaho-specific rules
Adopted code: The National Electrical Code, 2023 Edition, effective July 1, 2024, is adopted statewide by the Idaho Electrical Board under IDAPA 24.39.10 (Idaho Code § 54-1001) — separately from, and not bundled with, the Idaho Building Code Act baseline. The 2023 NEC governs branch-circuit sizing, load management, and disconnect requirements for EV charging equipment statewide, and an Idaho-licensed electrical contractor generally performs the installation and pulls the electrical permit.
Sources: Idaho Building Code Act (Idaho Code § 39-4116), Idaho Electrical Board — IDAPA 24.39.10, Rules of the Electrical Board (adopts the 2023 NEC)
Level 1 vs Level 2
Level 1 chargers plug into a standard 120V outlet and do not require a permit. Level 2 chargers require a dedicated 240V circuit (usually 40-50 amps) and always require an electrical permit. Level 2 is what most EV owners install for practical daily charging speeds.
Panel Capacity
A Level 2 EV charger draws 40A and requires a 50A breaker. Many older homes have 100A or 150A panels that may not have capacity. If your panel is full, you'll need a sub-panel or panel upgrade ($1,500-$3,000 additional). An electrician can do a load calculation to determine if your current panel can handle it.
Installation Location
Most home EV chargers are installed in the garage, near the electrical panel. Longer runs from the panel to the charger increase wire cost. Outdoor installations require a weatherproof-rated charger (NEMA 4 or 4X enclosure).
Rebates and Incentives
Many utilities offer rebates for residential EV charger installations. Federal tax credits may also apply. Check current programs with your utility before installation — rebates often require pre-approval and may have specific equipment requirements.
Bottom Line
Level 2 chargers need an electrical permit ($40-$75). Fast approval, one inspection. Check for utility rebates first.
Permit fees by city in Idaho
Verified from each city’s published fee schedule. Where a city has no separate fee listed for this project, open the city page for the current requirements and amount.
| City | Permit fee | Source |
|---|---|---|
| Boise | $135 per dwelling unitVerified | Residential Electrical Permit → |
| Caldwell | $160.00 per dwelling unitVerified | Residential Electrical Permit → |
| Eagle | $130.00Verified | Electrical Permit → |
| Garden City | Permitted under the general building permit — see city page | Residential Building Permit (New Construction / Addition / Remodel) → |
| Kuna | $65Verified | Electrical Permit → |
| Meridian | $120 per dwelling unit (includes structure and attached garage wired at same time)Verified | Residential Electrical Permit → |
| Nampa | $180.00 per dwelling unitVerified | Residential Electrical Permit → |
| Star | $130.00Verified | Electrical Permit → |
| Unincorporated Ada County | Permitted under the general building permit — see city page | Residential Building Permit (New Construction / Addition) → |
| Unincorporated Canyon County | Permitted under the general building permit — see city page | Residential Building Permit (New Construction / Addition / Remodel) → |