Lic #1007864 · San Mateo County · MEP Engineering
Electrical — Commercial & Residential
Licensed electrical work from panel upgrades and EV charging to retail lighting maintenance programs.
Celebrity-mansion territory — full-scale estate remodels, structural transformations, and grounds construction executed with total discretion.
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 Hillsborough and across San Mateo 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.
Hillsborough requires design review through the Town's Building & Planning Department, and its hillside estates bring slope, drainage, and retaining-wall engineering into nearly every project. From Hillsborough Oaks to the Carolands area, we coordinate geotechnical reports, view-sensitive design, and the town's exacting inspection standards.
What's included in Hillsborough
Recent electrical work
The process in Hillsborough
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 Hillsborough — 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 · Hillsborough