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Sarmento Bros. Construction Inc. logo — Commercial Construction, Tenant Improvements, ADU, Design-Build

Commercial General Contractor in Martinez, CA

Martinez, the county seat, mixes historic downtown storefronts with medical and professional offices. We handle the careful work older buildings demand and the code upgrades that come with them.

CSLB #1130548 · Licensed, Bonded & Insured · Serving Martinez from Manteca, CA

A Local Contractor, Actually Local

Why Martinez Businesses and Homeowners Call Us

We're a family-owned general contractor headquartered in Manteca — close enough to Martinez that our crews are on your site without travel-day pricing, and local enough that our reputation in Contra Costa County is worth more to us than any single job.

Every Martinez project runs under CSLB #1130548 with full general liability and workers' comp coverage, permits pulled with the city, and a written schedule you can hold us to. That's the arrangement on every job, at every size.

  • Free on-site estimates in Martinez
  • Permits handled with the city
  • 5.0★ rated across four platforms
  • 24/7 commercial emergency response
Sarmento Bros. Construction — 5.0 star rated contractor serving Martinez, CA on Google, Yelp, Thumbtack, and Angi

Planning a project in Martinez?

Tell us what you're working on. We'll walk the space, talk through options honestly, and give you a real number — free.

Request a Free Estimate

Common Questions

Working With Us in Martinez

Do you charge extra to work in Martinez?+

No. Martinez is inside our standard service area — we're based in Manteca and run projects throughout Contra Costa County, so there are no travel charges or minimums specific to Martinez.

Do you handle permits with the City of Martinez?+

Yes. We prepare drawings, submit to the Martinez building department, respond to plan-check corrections, and schedule inspections. Permit handling is included in how we run every job, not an add-on.

What kinds of projects do you take on in Martinez?+

Commercial tenant improvements, office and retail build-outs, restaurant construction, and commercial remodels — plus ADUs, kitchen and bathroom remodeling, and custom homes. If you're not sure your project fits, call 209-637-7379 and ask; the conversation is free.