From panel upgrades and EV chargers to full commercial buildouts, we deliver expert craftsmanship backed by 30+ years of experience.
From quick fixes to full projects, every job is handled by licensed pros and backed by our workmanship guarantee.
Upgrade your electrical panel to handle modern power demands safely and efficiently.
Learn more →Get a no-obligation quote on your next electrical project, with an honest, upfront estimate at no cost.
Learn more →From recessed lighting and LED retrofits to light pole installations, we illuminate every space.
Learn more →Power up your electric vehicle at home or at your business with professional charger installation.
Learn more →Comprehensive electrical solutions for commercial buildouts, renovations, and new construction.
Learn more →Fast, reliable diagnosis and repair for any electrical issue, residential or commercial.
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Brennan Electrical didn't start in a boardroom. It started with a toolbelt, a work truck, and a commitment to doing things the right way.
More About UsWhen you work with Brennan Electrical, you work directly with the people who care about your project, not a call center.
Greg Brennan has spent over three decades mastering the trade. That experience shows in every wire we run and every panel we install.
We hold both a C10 Electrical Contractor license and a General Engineering (A) license, License #920654. Fully licensed, code-compliant work.
Our clients consistently praise our team's speed and quality. We don't just meet deadlines, we beat them, without cutting corners.
Brennan Electrical is based in Glendora, California, strategically located to serve a wide radius of Southern California. We proudly provide our expert electrical contracting services to Los Angeles, Orange, San Bernardino, and Riverside counties. If your project is located near the borders of these counties, give us a call; we often accommodate projects slightly outside our primary radius depending on the scope of work.
View Full Service AreaCall us or send the form. We'll talk through your project and provide an honest, upfront estimate at no cost.
We explain the scope and price clearly before any work begins. No surprises, no hidden fees, no runaround.
Our team shows up, delivers quality work on schedule, and leaves your property safe and running right.
