The short answer
Washington enforces NEC 2023, the current edition there, statewide, in effect since April 1, 2024.
- Current edition
- NEC 2023 (current)
- Adoption
- Statewide
- In effect since
- April 1, 2024
- Primary source
- app.leg.wa.gov
Code adoption cycles change. Always confirm the edition and amendments in force with your Authority Having Jurisdiction (AHJ) before permitting work.
How does Washington adopt the NEC?
Washington adopts the NEC statewide through the Department of Labor & Industries with a meaningful set of state amendments, including additional seismic and wildfire-urban-interface equipment provisions. No broad AFCI/GFCI exemption is on record. The 2026 rule removes the temperature rating for certain NM and NMC '-B' cable sizes.
What are Washington's amendments to the NEC?
The app's record for Washington lists no individual amendments; the adoption summary above says how the state applies the code.
Who issues electrical permits in Washington?
L&I or a delegated local jurisdiction (e.g., Seattle) issues permits and inspects.
Who licenses electricians in Washington?
Statewide licensing of electrical contractors and certified electricians through L&I. Licensing board: Washington Department of Labor & Industries (L&I) - Electrical Program.
Washington Department of Labor & Industries (L&I) - Electrical Program
Is Washington moving to a newer NEC edition?
NEC 2026 is adopted with a delayed effective date of 2026-12-31 (rule adopted 2025-11-18); NEC 2023 applies until then.
Is Washington on NEC 2026?
No. NEC 2026 is the newest edition; the one current in Washington is NEC 2023, one edition older. NFPA publishes a new edition every three years and each state adopts on its own schedule.