Interstate Electrical Contractors

Interstate Electrical Contractors is a licensed C-10 electrical contractor based in Glendora, California. Established in 1981, we provide residential and commercial electrical services, including electrical repairs, troubleshooting, panel upgrades and replacements, EV charger installation, lighting, ceiling fans, outlets, GFCI installation, rewiring, surge protection, and code corrections. We focus on safe, code-compliant electrical work, clear communication, and dependable service for homes, businesses, remodels, and electrical upgrades throughout Glendora and nearby communities.

The business is Frank Chiavarini’s. He picked up the trade in high school, spending afternoons and weekends with an electrical contractor who lived nearby, and has been licensed and working for more than thirty years. Interstate Electrical Contractors has operated out of Glendora since 1981.

The licence is C-10 number 415324, and the site links straight through to the CSLB’s own lookup tool rather than simply asserting it. That is a small thing, but it means a homeowner can verify the licence in about twenty seconds before booking anything. An older licence document reproduced on the same page is dated 10 December 1981.

Day-to-day work is residential and light commercial: troubleshooting and repair, panel upgrades and replacements, EV charger installation, indoor and outdoor lighting, ceiling fans, outlets, switches and GFCIs, surge protection, and dedicated appliance circuits. Estimates are free, and the company lists 24/7 emergency availability.

The process is described in three steps, consultation, installation, then follow-up support, and the homepage counts more than 250 completed projects and 200 clients.

Mail goes to P.O. Box 271, Glendora, CA 91741, and the office line is (626) 914-4000.