Lic #1007864 · San Mateo County · Structural
Commercial & Residential Structural Framing
Load-bearing walls, additions, and seismic-smart structural framing engineered for California.
America's most exclusive zip code. Discreet, white-glove contracting for ultra-luxury estates and legacy Peninsula properties.
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 Atherton and across San Mateo 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.
Atherton builds answer to the Town's Building Department on Station Lane — and to the heritage-tree ordinance that shapes where additions, ADUs, and driveways can land on the town's one-acre estate lots. We plan around protected oaks, manage design review, and deliver the discreet, high-touch project management Lindenwood and West Atherton estates expect.
What's included in Atherton
Recent framing work
The process in Atherton
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 Atherton — 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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