Lic #1007864 · Contra Costa County · Commercial Solutions
Retail Maintenance & Rapid Response
The crew national brands call — multi-site retail maintenance from San Francisco to San Diego.
Blackhawk-adjacent luxury — gated-community remodels, outdoor living construction, and estate grounds work.
JMG keeps retail portfolios open and immaculate: punch-list turnarounds, fixture and signage repair, painting, drywall, and emergency response delivered to brand standards — including work for Starbucks locations.
In Danville and across Contra Costa County, JMG delivers retail maintenance under California Contractor's License #1007864 — permitted, inspected, and personally overseen by owner Jerry Guinn. One call covers every trade. Our after-hours crews work while your stores are closed, so revenue is never interrupted and corporate inspections always pass.
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 retail maintenance 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.
Retail Maintenance in Danville — FAQ
Active maintenance clients get same-day or next-morning response across our San Francisco to San Diego corridor. Emergency board-up and leak mitigation dispatch immediately.
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Retail Maintenance · Danville