Question 1

Is JMG Construction Services licensed and insured?

Accepted Answer

Yes. JMG Construction Services operates under California Contractor's License #1007864 and is fully licensed, bonded, and insured for residential, commercial, and retail construction. Owner Jerry Guinn personally stands behind every project we deliver.

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Question 2

What areas of California does JMG serve?

Accepted Answer

For residential and commercial construction we cover 15 of California's highest-income communities from San Jose and the greater Bay Area to Sacramento — including Atherton, Hillsborough, Palo Alto, Los Altos, Los Altos Hills, Saratoga, Los Gatos, Cupertino, Menlo Park, Pleasanton, Danville, San Francisco, and Walnut Creek. For retail maintenance and construction solutions, our crews run statewide from San Francisco all the way to San Diego.

Question 3

What construction services does JMG offer?

Accepted Answer

We self-perform sixteen trades in-house: in-house architecture and engineering, commercial and residential painting, epoxy coating services, sheet rock installation, sheet rock repair, electrical, residential and commercial plumbing, structural framing, roofing, commercial and residential HVAC, parking lot striping and ADA compliance, commercial and residential landscaping, remodels, custom ADUs and additions, 3D renderings and design visualization, and retail maintenance with rapid response. One contract, one schedule, one accountable license.

Question 4

Do you build ADUs in the Bay Area?

Accepted Answer

Yes — custom ADUs and home additions are one of our specialties. We build detached and attached ADUs, room and second-story additions, garage conversions, and junior ADUs across Silicon Valley and the East Bay, handling feasibility, design, permitting, Title 24 compliance, utility connections, and turnkey finishes that match the main residence.

Question 5

Do you work on commercial and retail construction projects?

Accepted Answer

Absolutely. JMG is a trusted retail construction and maintenance partner for national brands including Starbucks, Nike, Converse, and Burlington. We deliver tenant improvements, build-outs, refreshes, and ongoing maintenance programs to exact brand standards.

Question 6

Do you offer emergency or after-hours retail maintenance?

Accepted Answer

Yes. Our retail division runs after-hours and overnight crews so stores never close for repairs. Punch lists, fixture and signage repair, painting, drywall, HVAC, and electrical emergencies are handled on rapid response from San Francisco to San Diego.

Question 7

How much does a home remodel cost in the Bay Area?

Accepted Answer

Every property and scope is different — a kitchen remodel, whole-estate renovation, and ADU each carry very different budgets. JMG provides a private consultation and a detailed, line-item estimate before any work begins, so there are no surprises. Request a consultation and owner Jerry Guinn will scope your project personally.

Question 8

Do you handle permits and inspections?

Accepted Answer

Yes. We manage the entire permitting process — plans, submissions, plan-check corrections, and every inspection — with Bay Area, Sacramento, and Southern California building departments. Our structural, ADU, and commercial work is always permitted and inspection-ready.

Question 9

Who will I work with on my project?

Accepted Answer

You work directly with the owner. Jerry Guinn personally scopes every JMG project and our own in-house crews execute the work — we never broker your project out to unknown subcontractors. That single point of accountability is why celebrity estates and national retail brands trust us.

Question 10

How do I get a construction quote from JMG?

Accepted Answer

Use the consultation form on any page of this site or email Jerryguinn@jmgconst.com with your project details. Include the property city, the service you need, and your timeline — we respond within one business day with next steps and a site-visit schedule.

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