Plumber in San Mateo, CA
Licensed plumbing contractor serving San Mateo homes, apartments, and commercial properties. Family-owned, NuFlow certified, free estimates, open 24/7.
Licensed plumbing contractor serving San Mateo homes, apartments, and commercial properties. Family-owned, NuFlow certified, free estimates, open 24/7.
Upfront pricing. Same-day service. No obligation.
"*" indicates required fields
We’ll call you back fast, usually within the hour.
THIS MONTH’S BEST DEAL
One-time use. Combine with our 24/7 emergency service and pay only when the job is done. Mention this offer when you book.
Expires soon · Cannot be combined
Works Plumbing is a family-owned, C-36 licensed company serving San Mateo and the wider Peninsula since 2009. We provide 24/7 emergency services, free estimates, and lasting solutions.
Request your plumbing service online with Works Plumbing Repair and Drain Cleaning.
Weak flow can result from a failing regulator, corroded supply line, or partially closed valve. We measure before replacing anything.
Regulators fail closed or open, and both cause damage. We test static pressure, then replace and set the valve correctly.
We replace seized and leaking units and inspect the trap arm and branch drain that usually cause the jam.
Cartridges, valves, diverters, and tub spouts are rebuilt or replaced, and the supply stops behind them are checked simultaneously.
We test the supply and specify treatment matched to the result instead of selling equipment before knowing what the water contains.
Backed-up kitchen, laundry, and main lines are cleared at any hour, then verified so the cause is documented rather than assumed.
Pinhole leaks, split sections, and failed joints are repaired or replaced, and we pressure test the result before closing anything up.
Apartment buildings, offices, and storefronts, with the written documentation owners and property managers need for their records.
Our NuFlow trenchless solutions apply to pressurized and non-pressurized piping. They address pinhole leaks through advanced corrosion, improve flow rate, and create a durable barrier between your piping and the water.
Household leaks are not a rounding error. EPA WaterSense reports the average household wastes more than 9,300 gallons a year and that nine percent of homes have leaks losing 50 gallons or more daily. The usual culprits are unglamorous: worn toilet flappers, dripping faucets, and tired valves.
San Mateo adds an accelerant. Water reaches hillside neighborhoods from higher pressure zones. Many older homes run a pressure regulator that failed years ago without anyone noticing. High pressure turns a flapper into a constant runner and shortens the life of supply lines and heaters.
So we put a gauge on the system. It takes two minutes and often explains the fixture that keeps failing and the bill that keeps climbing. Replacing a part without fixing the underlying pressure means replacing it again.
They showed up in under an hour, quoted me before touching anything, and cleaned up after. Exactly how it should be.
Verified Works Plumbing customer
Ann E., 5-star Google review
“We had a very complicated plumbing issue with an old clogged pipe, and our technician was excellent at diagnosing the problem and working through a variety of different solutions. I would highly recommend this company for all of your plumbing needs. Will was especially helpful and went step-by-step through diagnosing the problem and developing several different options for us to consider. I would definitely hire them again.”
Chandra L., 5-star Google review
“Professional and courteous technician Wilfred did an amazing job replacing the tub diffuser. We are very pleased with the results. He went above and beyond to make sure client was satisfied”
Planning a remodel in San Mateo? Price the lateral inspection into the budget. Improvements at or above ninety thousand dollars trigger the requirement, not just a sale.
See how we handle it:
Prefer to listen? Catch this topic on our homeowner podcast:
We run 24 hours from three Bay Area offices, so calls from Baywood, Aragon, Hayward Park, Hillsdale, Shoreview, and downtown blocks reach a crew already working nearby.
Larger work such as a repipe or lateral replacement can be spread out with financing, and our current specials can help you save more.
Pipes, faucets, fixtures, toilets, garbage disposals we fix what’s broken, fast.
Learn MoreHydro jetting, rooter service, camera inspection. Clogs gone, drains flowing.
Learn MoreTank and tankless install, repair, and replacement. Hot water within 24 hours.
Learn MoreInstallation, repair, leak detection performed by certified technicians.
Learn MoreNon-invasive camera inspections find leaks fast without tearing up your home.
Learn MoreBurst pipes? Flooded basement? We answer the phone day, night, weekends, holidays.
Learn MoreWhole-home repipe and trenchless sewer repair. Less mess, longer life.
Learn MoreA look at real Works jobs around the Peninsula.
The leaks that cost the most are the ones nobody hears, which is exactly what scheduled service is for.
Rocket Rewards members receive an automatic 10 percent discount on all services with call-out charges waived, so checking pressure, flappers, and supply connections costs nothing to arrange.
Membership also includes periodic water heater inspection and flushing, scheduled priority over non-members, and price protection that holds your agreement rate through its term. Regular inspection reduces emergency calls by surfacing problems while they are still cheap to fix.
Here are the questions we hear most. Don’t see yours? Give us a ring, a real human answers, day or night.
A gauge on a hose bib answers it in two minutes. Anything above 80 psi static exceeds what the plumbing code permits without a regulator, and pressure in that range shortens the life of flappers, fill valves, supply lines, and water heaters. We test as part of routine service, so you usually find out before it costs you a fixture.
Yes, and sooner than most people think. EPA figures put 9% of homes at risk of leaks that waste 50 gallons or more per day, and a silently running flapper is the most common single contributor. The part is inexpensive, the labor is short, and correcting the pressure behind it stops the replacement from failing early too.
Probably not. A single weak fixture usually points to an aerator, cartridge, or supply stop at that location. Weak flow at every fixture points to the regulator, the main supply line, or corrosion through the system. That distinction is why we ask which fixtures are affected when you book.
Yes, and a meaningful share of our San Mateo work is multi-unit and commercial. We coordinate access with tenants, provide the written estimates and invoices owners and property managers need, and can schedule non-urgent work at hours that minimize disruption to residents or customers.
Where the problem allows more than one legitimate approach, yes. We solve recurring blockage by cleaning, a spot repair, or lining, and each buys you something different. Customers here have specifically mentioned being walked through the options, and you approve a written price before we start.
We also cover Hillsborough, Burlingame, Foster City and Belmont on the same routes.
We’ve earned our reputation one happy homeowner at a time.
“I had a backed up kitchen drain and David from Works Plumbing came out and cleared the line in a matter of minutes. Very professional and very knowledgeable. Definitely recommend!”
“Great professional and quick service! Shamir was friendly, efficient, and professional. He fixed the leaking problem in my sink and garbage disposal in under an hour. Highly recommend!”
“Thank you again for another job well done, and thank you for responding right away. I will continue to recommend Works Plumbing because they respond right away and get the job done efficiently.”
Plumbing emergencies don’t wait for payday. Spread your cost over 12, 24, or 60 months with affordable financing options through trusted partners.
Share these with a neighbor, or just mention the special when you schedule. Every offer works by phone or online.
Drain cleared or it’s free. Limit one per household.rnrn
Mention this offer when you schedule EXPIRES 12/31/2026Save $500 on a new tankless water heater install.rnrn
Mention this offer when you schedule Expires 12/31/2026With any drain cleaning service over $250. See the problem yourself.
Mention this offer when you schedule Expires 12/31/2026Thank you for your service. Ongoing: no expiration.
Mention this offer when you schedule Valid year-roundLabor only with purchase of new toilet. Includes haul-away.
Mention this offer when you schedule Expires 12/31/2026Honest pricing, no obligation. We won’t waste your time.
JUST CALL US Valid year-round
A real human will answer, dispatch a stocked Works van, and get someone at your door, usually in under an hour. No phone trees. No robots. No “we’ll get back to you Monday.”