Lic #1007864 · Contra Costa County · Exterior
Commercial & Residential Landscaping
Full-service commercial and residential landscaping — estate gardens, retail grounds, hardscape, and smart irrigation across California.
Blackhawk-adjacent luxury — gated-community remodels, outdoor living construction, and estate grounds work.
JMG's landscaping division serves both sides of California: estate gardens and outdoor living for residential clients, and grounds programs for retail centers, campuses, and commercial properties — from the Bay Area to Sacramento, and San Francisco to San Diego.
In Danville and across Contra Costa County, JMG delivers landscaping under California Contractor's License #1007864 — permitted, inspected, and personally overseen by owner Jerry Guinn. Drought-tolerant conversions, smart irrigation, architectural lighting, and hardscape are engineered for beauty and for California's water reality — installed and maintained by the same in-house team.
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 landscaping 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.
Landscaping in Danville — FAQ
Yes — estate gardens and outdoor living for homeowners, plus grounds design, installation, and maintenance programs for retail centers, campuses, and commercial properties. One in-house team covers both.
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Landscaping · Danville