Lic #1007864 · Contra Costa County · Structural
Commercial & Residential Structural Framing
Load-bearing walls, additions, and seismic-smart structural framing engineered for California.
Blackhawk-adjacent luxury — gated-community remodels, outdoor living construction, and estate grounds work.
JMG frames room additions, ADU shells, and open-concept structural conversions with engineered lumber, steel, and hold-down systems that satisfy the strictest Bay Area building departments.
In Danville and across Contra Costa County, JMG delivers framing under California Contractor's License #1007864 — permitted, inspected, and personally overseen by owner Jerry Guinn. Every structural modification is permitted, engineered, and inspected — protecting both your investment and your family's safety in earthquake country.
Danville projects often answer to two authorities: the Town's building division and an HOA design-review board — Blackhawk most famously. We prepare HOA submittal packages, manage the town's permit process, and build the estate remodels, outdoor structures, and ADUs that define Diablo-adjacent living.
What's included in Danville
Recent framing work
The process in Danville
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.
Framing in Danville — FAQ
Yes — structural repairs, sistering joists, replacing undersized headers, and shear-wall corrections, engineered where required. We shore, repair, and inspect in sequence.
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