Silicon Valley · Santa Clara County · Commercial & High-End Residential
General Contractor
High-end residential remodels and commercial projects in the heart of Apple country — precision work for precision-minded clients.
JMG Construction Services — California Contractor's License #1007864 — delivers all sixteen of our in-house trades to Cupertino and greater Santa Clara County. From estate remodels and custom ADUs to roofing, electrical, plumbing, and commercial HVAC, every Cupertino 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.
Cupertino remodels are driven by families and its school district — kitchen expansions, garage conversions, and ADUs for multigenerational living top the list. The city's online permit portal keeps submittals moving, and our in-house trades keep occupied-family-home projects clean, quiet, and on schedule.
All services in Cupertino
Recent work in the Cupertino area
How projects run in Cupertino
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.
Cupertino 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.
Cupertino Projects