Silicon Valley · Santa Clara County · High-Wealth Tech Hub
General Contractor
Our home base — Silicon Valley's capital, where JMG delivers high-end residential remodels, custom ADUs, and commercial build-outs across every district.
JMG Construction Services — California Contractor's License #1007864 — delivers all sixteen of our in-house trades to San Jose and greater Santa Clara County. From estate remodels and custom ADUs to roofing, electrical, plumbing, and commercial HVAC, every San Jose project is personally scoped by owner Jerry Guinn and executed by our own crews — never brokered to unknown subcontractors.
Whether the brief is a celebrity-grade whole-estate renovation, a discreet retail maintenance program, or a high-value ADU addition, our clients across Santa Clara County get one contract, one schedule, and one accountable license.
San Jose projects run through the City's Permit Center and the SJplans online portal — and San Jose's pre-approved ADU plan program can shave weeks off a backyard-unit timeline. From Willow Glen and Cambrian ranch remodels to Almaden Valley estates and downtown tenant improvements, JMG manages submittals, plan-check corrections, and inspections end to end.
All services in San Jose
Recent work in the San Jose area
How projects run in San Jose
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.
San Jose construction — FAQ
Yes — JMG Construction Services holds California Contractor's License #1007864 and pulls permits in Santa Clara County regularly. Every project is permitted, inspected, and signed off before we call it done.
San Jose Projects