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Sewer Line Repair & Replacement in San Mateo, CA

Sewer line repair and replacement for San Mateo properties with recurring backups, yard wet spots, or camera-confirmed damage. We repair localized cracks and bellies when possible and replace collapsed lines when repair is not viable. Permits, excavation, and code-compliant connections handled by our crew.

  • 60 Years Combined Experience
  • Licensed & Insured
  • Emergency Service
  • Transparent Pricing

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Call (415) 728-6391 — cannot be combined with any other offer or coupon.

How we decide repair vs. replacement in San Mateo

Camera-first decisions

We prefer video inspection before excavation when the line is accessible. Seeing the crack, belly, or collapse on screen keeps repair scoped to the failing section instead of replacing pipe that still has life left.

Repair vs. replacement in San Mateo

Localized damage from roots or a single bad joint may qualify for spot repair. Multiple breaks, collapsed sections, or repeated failures on aging clay or cast iron often point to full replacement for decades of reliability.

Permits and restoration

Bay Area municipalities require permits for many sewer projects. We handle paperwork, inspections, and leave the site broom-clean with sod or hardscape restored to a practical finish.

Sewer Line Repair & Replacement in San Mateo, CA
Why ASAP

Why San Mateo homeowners choose us

  • Licensed & insured

    Every job is completed by licensed plumbers with full liability coverage.

  • Repair or replace

    We fix localized damage when possible and replace collapsed lines when repair is not viable.

  • Upfront pricing

    We explain the problem and quote before work begins — no surprise charges.

One crew for sewer repair and replacement in San Mateo

Repair and replacement under one roof

You do not need two contractors arguing about scope. We repair when it is sound engineering and replace when it is not.

Trenchless when appropriate

Some lines qualify for pipe bursting or lining. We explain when trenchless fits San Mateo soil and depth conditions versus open cut.

Coordination with city utilities

We locate other utilities before dig day and keep you informed if city sewer connection work is required at the tap.

Sewer Line Repair & Replacement in San Mateo, CA
Customer reviews

Sewer Line Repair & Replacement services reviews near San Mateo

Google Reviews 269 reviews
Google review

Don was the man. I called him when my toilets had trouble flushing. Turned out it was a clog in my main sewer line. Scheduled a time with him same day. He showed up on time and quickly got to work. It was a tough clog but he was in and out in about an hour. He cleaned up his mess and installed my toilet back. Very pleasant experience and will definitely reach out if I have future issues. Prices are very reasonable and he was very kind to provide a 30 day warranty as well! Go with Dr. Don!!

Tom Tran

Dec 13, 2022

Google review

ASAP Plumbing Pro was called for replacing sewer line during our ongoing driveway and sidewalks project. Donald, Kong and Renato started working as early as 6am, in order not to delay the concrete and pavement. They finished the job before 9am, right before concrete men show up. They are definitely deserved the name of “ASAP”, and highly recommended!

Daniel Liu

Sep 3, 2025

Google review

Drain Doctor Don has cleared our sewer line of tree roots twice now, and we will continue to use him in the future until we have the line replaced. Great value and very reliable.

Matthew Greenwell

Mar 12, 2023

Google review

I worked with Don for a few years now. Over the years, he had helped me install a toilet, garbage disposal, and fix a few emergency nasty sewer drain clogs. He never fails to fit me into his schedule. Don is one of the most honest plumbers I have dealt with. Ask your questions and he will be more than happy to help. I switched a lot of different plumbers over the years but Don is definitely my first call now. Go with DDD Plumbing San Francisco Drain Cleaning!

행운목

Dec 23, 2022

Google review

I’ve been using Don since his business began. Don always offers the best prices for all San Francisco draining needs. I’ve used him for faucet installations, garbage disposal, drain clogs, outdoor and indoor plumbing needs, plumbing leaks, sewer cleaning, among other services for my properties. My neighbors also raved about his coverage in the San Francisco bay area region for shower installation, water tank needs, drain cleaning, sink draining, etc. He far and away exceeds my expectations especially in the San Francisco Bay Area region where prices are exorbitant. With Don, you get bang for your buck for professional plumbing and drainage needs with free warranty for the first month! I’ll be using Don for years to come! Hey Don, time to start a loyalty program?!

liqun jiang

Dec 22, 2022

Google review

Don came right on time and was very courteous. He wore a mask and brought house booties to wear to keep my floors clean. Don quickly diagnosed the problem. The main sewer line was heavily clogged. He used his 50 foot electric snake to clean out the pipes. He was very clean. I now have a toilet that doesn’t clog and a shower that doesn’t back up. Life is good again, thanks to Don!! I would highly recommend him. He is outstanding!

Melinda Dahl

Dec 15, 2022

Google review

I called ASAP Plumbing Pros for an emergency sewer lateral backup at our house and Don was nice, professional and easy to work with. He was able to get a hold of the senior plumber on call, Z, to be at our house within 20 minutes when the other plumbers in the city estimated a later time at night and others estimated the next day. Z was thorough and seemed to really care about solving our issue with the roots in our pipes. I would 💯 recommend them. Thank you both for making it easy for us.

Ling Wu

Jul 30, 2026

Google review

Came home to no hot water. Asked neighbors who to call. ASAP was true to their name. Showed up almost immediately, diagnosed the failed hot water tank, and got a replacement installed very fast. Also fixed a flow issue we had. Good communication throughout the process, which I greatly appreciate.

Andy Berschauer

Dec 8, 2025

Fixing failed sewer lines in San Mateo

Recurring sewage backups, yard odors, and lush green strips over the sewer path are signs the underground line needs professional attention — not another quick clear. ASAP Plumbing Pros repairs localized damage in San Mateo when engineering supports it and replaces collapsed or multiply-failed lines when repair is throwing good money after bad pipe.

Camera data drives the scope

We prefer video inspection before excavation when access allows. Seeing the belly, crack, or offset on screen keeps repair focused and helps San Mateo homeowners understand why replacement is sometimes the only durable option. Details on our process live on the sewer line repair & replacement hub page.

Permits, utilities, and restoration

Bay Area sewer work often requires permits and inspection. We coordinate dig day with utility locates and restore grade so the area is safe to use when we leave.

Trenchless options when they fit

Pipe bursting and lining can reduce yard disruption on qualifying lines. We explain candidly when open cut is still the right call for depth, soil, or connection conditions in San Mateo.

Ready to schedule?

Use the contact form or call (415) 728-6391 for sewer line service in San Mateo. Mention backup history and any prior camera reports so we arrive prepared.

Good to know

What San Mateo Homeowners Ask About Sewer Line Repair & Replacement

How quickly can you help with sewer line repair in San Mateo?

Active sewage backups get urgent scheduling. Call to assess severity.

Can sewer lines be repaired instead of replaced in San Mateo?

Often yes for localized damage. Camera inspection determines the right scope.

How long does sewer replacement take?

Many residential jobs take one to three days depending on depth, length, and access.

Do you pull permits?

Yes when required by the city or county. Permits are included in our planning.

What are signs of sewer line failure?

Recurring backups, gurgling, yard odors, and lush patches over the line path.

Is trenchless replacement available?

We evaluate pipe condition and soil to recommend trenchless or open cut.

How much does sewer work cost?

Scope varies widely. Inspection and written estimate come before excavation.

What areas near San Mateo do you serve?

We serve San Francisco, Daly City, San Mateo, South San Francisco, San Bruno, Millbrae, and communities throughout San Mateo County. Call (415) 728-6391 to confirm service for your address.

Other Sewer Line Repair & Replacement Areas We Serve

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Call (415) 728-6391 or request service online — 24/7, every day of the year.