Lic #1007864 · Contra Costa County · MEP Engineering
Electrical — Commercial & Residential
Licensed electrical work from panel upgrades and EV charging to retail lighting maintenance programs.
The East Bay's retail capital — Broadway Plaza-caliber tenant improvements, striping, and luxury home upgrades in the surrounding hills.
JMG designs and installs electrical systems for high-demand modern living — 200A+ panel upgrades, whole-estate lighting, EV charging, and dedicated circuits for luxury kitchens and home theaters across Silicon Valley.
In Walnut Creek and across Contra Costa County, JMG delivers electrical under California Contractor's License #1007864 — permitted, inspected, and personally overseen by owner Jerry Guinn. For retail and commercial clients, we deliver code corrections, lighting retrofits, and rapid-response maintenance that keeps storefronts lit and operational from San Francisco to San Diego.
Walnut Creek pairs a high-traffic downtown retail core with hillside neighborhoods in Saranap and Northgate. Retail refreshes downtown demand night work and zero downtime; hillside homes demand fire-safe materials and defensible-space detailing. JMG crews handle both on one schedule.
What's included in Walnut Creek
Recent electrical work
The process in Walnut Creek
Private Consultation
Walk the property with owner Jerry Guinn. Honest scope, realistic timeline, and a written line-item estimate — free.
Design & 3D Rendering
See the finished project in photorealistic 3D before a single wall comes down. Finishes get locked before demo day.
Permits, Handled
Plans, submittals, corrections, and city or county coordination under CA License #1007864. You sign — we run the process.
Build & Final Inspection
Sixteen in-house trades on one schedule, one accountable owner. Inspection passed, walkthrough done, keys in hand.
Electrical in Walnut Creek — FAQ
Always. Panel upgrades, EV chargers, new circuits, and rewires are permitted and inspected under our license — you receive the signed-off permit card at completion.
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Electrical · Walnut Creek