Commercial sewer line repair in Concord & the Bay Area.
Camera diagnosis. Honest options. Minimal downtime.
A failed sewer line can shut your building down fast. We run the camera first — so you see exactly what's broken and why — then give you a fixed price for spot repair, trenchless lining, pipe bursting, or full replacement. No guessing. No surprises.
- Camera diagnosis included — You see the footage before we quote the repair.
- Traditional & trenchless methods — Spot repair, CIPP lining, pipe bursting, or full replacement.
- Fixed price before work begins — Scope and cost approved by you — no open-ended billing.
- CA Lic. #802256 — Licensed, insured, and family-owned since 2001.
Camera diagnosis included
Traditional & trenchless methods
What We Do
Camera first.
Right repair, right price.
Commercial sewer failures don't always require digging up your parking lot. A camera inspection tells us exactly what's wrong — and whether spot repair, trenchless lining, pipe bursting, or excavation is the right call. We show you the footage and explain every option.
We handle permits, coordinate inspections, and document the completed repair. Whether you manage a single building or a portfolio of commercial properties, you get a fixed price before any work begins and a verified result at the end.
Schedule a camera inspectionHow It Works
Diagnose. Quote.
Repair. Verify.
- Step 1:
Camera Diagnosis
We run a sewer camera to locate the exact failure — crack, root intrusion, offset joint, belly, or collapse. You see the footage.
- Step 2:
Scope & Options
We explain the repair options: spot repair, trenchless lining, pipe bursting, or full replacement. Fixed price before any work begins.
- Step 3:
Execute the Repair
Minimal excavation. We protect active business operations where possible. Proper bedding, backfill, compaction.
- Step 4:
Post-Repair Verification
Camera re-run confirms repair quality. Permit inspection coordinated. Full documentation provided.
Repair Guide
Spot repair, trenchless, or full replacement — we show you the footage first.
Not every sewer problem calls for excavation. Camera diagnosis tells us the failure type and extent, so you get the repair that matches the problem — not the most expensive option.
Which repair method is right?
A single failure point can often be addressed with a short CIPP liner or mechanical spot repair — no major excavation required.
When a line has widespread deterioration, patching individual failures is less cost-effective than replacing the full run with new pipe.
A structural collapse or major offset cannot be relined. Excavation removes the failed section and installs new pipe with proper bedding and grade.
Signs your sewer line needs attention
- Sewage smell on property
- Slow drains building-wide
- Wet or sunken areas in parking lot or landscaping
- Sewage backing up into floor drains
- Frequent blockages in the same line
- Pre-lease or pre-sale inspection required
FAQ
Common questions
Cost depends on the repair method, pipe depth, length of line affected, and access conditions. A spot repair via CIPP lining is typically far less than full replacement. We provide a fixed price after camera diagnosis — before any work begins. You see the footage, understand the options, and approve the scope.
Spot repairs and CIPP lining can often be completed in one day. Pipe bursting typically takes one to two days. Full excavation and replacement timelines depend on the length of line and depth — we discuss phasing before we start to minimize disruption to your operations.
Trenchless methods — CIPP lining and pipe bursting — are available for most commercial sewer lines. Suitability depends on pipe material, diameter, extent of damage, and access points. Our camera diagnosis will confirm whether trenchless is an option for your specific line.
Yes. Sewer line repair and replacement typically requires a city or county permit and inspection. We handle permit coordination, schedule the inspection, and provide documentation for your records. You don't need to manage that process.
We plan work to minimize downtime. Trenchless methods have the smallest footprint. When excavation is necessary, we work in phases where possible, protect active areas of your property, and coordinate with you on scheduling. Emergency repairs are available when a line has failed completely.
Yes. Camera diagnosis is included as part of the repair process. We locate the failure, confirm its type and extent, and show you the footage before presenting options. There is no guessing about what needs to be fixed or why.
Yes. If you have sewage backing up into floor drains, a collapsed line, or an active overflow, call us at (925) 288-0409. We respond to commercial sewer emergencies and prioritize getting your line functional as quickly as possible.
What Clients Say
Trusted by property managers
across the Bay Area.
“Our building had sewage backing up into the basement floor drains. Guerra Bros. came out, ran the camera, found the problem — root-blocked lateral — and had it cleared and lined the same day. Professional from start to finish.”
“We manage a small commercial strip and had recurring drain issues in one unit. They did the camera inspection, showed us the footage of the cracked clay pipe, and quoted us trenchless lining vs. full replacement. We went trenchless. No parking lot damage, done in a day.”
“Pre-lease inspection turned up a belly in the sewer line. Guerra Bros. gave us a clear scope and a fixed price. Repair was done before the tenant moved in, with permit and documentation. Exactly what we needed as a property owner.”
Where We Work
Commercial Sewer Line Repair 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.
View all service areas
Related Services
More commercial services
For Commercial
Video Pipe Inspection
CCTV sewer and drain camera inspection with footage and a written report for your records.
View Service
Written report included
For Commercial
Hydro Jetting
High-pressure hydro jetting to clear grease, scale, and roots from commercial drain and sewer lines.
View Service
Clears roots & grease
For Commercial
Drain Line Services
Commercial drain line installation, repair, and maintenance for floor drains, area drains, and building laterals.
View Service
Installation & repair