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.
The East Bay's retail capital — Broadway Plaza-caliber tenant improvements, striping, and luxury home upgrades in the surrounding hills.
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 Walnut Creek 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.
Walnut Creek pairs a high-traffic downtown retail core with hillside neighborhoods in Saranap and Northgate. Retail refreshes downtown demand night work and zero downtime; hillside homes demand fire-safe materials and defensible-space detailing. JMG crews handle both on one schedule.
What's included in Walnut Creek
Recent landscaping work
The process in Walnut Creek
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 Walnut Creek — 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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