Renton, WA Building Safety: Electrical Permits (2026)

RMC 4-5-060, the Construction Administrative Code, governs how Renton issues permits for work regulated by the 2020 Washington Cities Electrical Code, adopted as the Renton Electrical Code under RMC 4-5-040. 1, codified at RMC 4-5-060(E)(1), requires any owner or authorized agent to apply to the Building Official and obtain a permit before altering, installing, or replacing any electrical, gas, mechanical, or plumbing system regulated by the Construction Codes. 28 RCW, a permit is required for the installation, alteration, repair, replacement, modification or maintenance of all electrical systems, wire and equipment, regardless of voltage.

The rule reaches beyond line voltage; it also covers low-voltage circuits defined by the National Electrical Code (Class 1 power-limited circuits up to 30 volts, and Class 2 and Class 3 circuits), and telecommunications installations once a project exceeds ten outlets, involves backbone cabling, or penetrates a fire-rated wall. 1, which requires keeping detailed alteration records the Building Official can inspect. 2 exempts installation, alteration or repair of generation, transmission, distribution or metering equipment owned by a public service agency, and work located primarily in the public right-of-way.