Commercial plumbing in Concord & the Bay Area.
Backflow, grease traps, sewer, water heaters, gas & more. Built for business.
Guerra Bros. Plumbing has served Bay Area businesses, restaurants, and property managers since 2001. We understand commercial schedules — we work around yours, pull our own permits, and deliver clean documentation for compliance records.
- Scheduled & emergency service — Around-the-clock response for active facilities.
- Certified backflow technicians — AWWA certified. Same-day reporting to the water district.
- All commercial plumbing — Grease traps, hydro jetting, sewer, TI build-outs & more.
- CA Lic. #802256 — Licensed, bonded, insured — ready for COI requests.
Licensed & Certified
CA Lic. #802256 · Bonded & Insured
AWWA Certified Backflow Tester
COI available on request
Commercial & Industrial
All Commercial Services
What we do for businesses.
For Commercial
Backflow Testing & Repair
Annual testing, certified repair, and same-day reporting to the water district. All assembly types covered.
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AWWA certified
For Commercial
Pressure Regulator Installation
PRV installation, replacement, and calibration. Protect your building's plumbing from high incoming pressure.
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Permitted & tested
For Commercial
Eye Wash Station Installation
OSHA-compliant emergency eye wash stations installed and certified. Required in labs, kitchens & industrial facilities.
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For Commercial
Drinking Fountain Services
Installation, repair, and filter maintenance for commercial drinking fountains and bottle-fill stations.
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ADA compliant options
For Commercial
Grease Trap Maintenance
Cleaning, pumping, and inspection for restaurants, commercial kitchens, and food service facilities.
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Certified pumping
For Commercial
Hydro Jetting
Industrial-grade pipe cleaning at up to 4,000 PSI. Grease buildup, scale, and root intrusion cleared completely.
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Up to 4,000 PSI
For Commercial
Drain Line Services
Floor drain repair, trench drain installation, and mainline clearing for commercial buildings and warehouses.
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For Commercial
Sewer Line Repair
Trenchless pipe lining, pipe bursting, and open-cut repair. Camera diagnosis before every job.
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Trenchless available
For Commercial
Water Heater Services
Commercial tank and tankless installation, repair, and maintenance. Boilers, recirculation loops, and fleet upgrades.
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Same-day available
For Commercial
Gas Line Services
New gas line runs, appliance connections, leak repair, and pressure testing. Permitted and code-compliant.
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Permits handled
For Commercial
Video Pipe Inspection
CCTV camera inspection with written report and video recording. Pre-purchase, maintenance, and diagnostic.
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Report included
For Commercial
Tenant Improvements
Plumbing rough-in, fixture upgrades, and full TI packages for retail, office, and restaurant build-outs.
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Full build-out capable
Where We Work
Commercial Plumbing near you.
Same-day service available in Concord, Walnut Creek, Martinez, and throughout Contra Costa County.
Don't see your city? Call us — we may still serve your area.
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