A burst pipe at 2 a.m. or a clogged drain mid-dinner — our licensed technicians in San Anselmo reach your door fast, diagnose on the spot, and fix it right the first time. No surprise invoices, ever.
Masters Plumbing Service started because too many San Anselmo residents were getting hit with bait-and-switch pricing from out-of-area contractors. Our founders built this company on one promise: every technician who walks through your door carries their CA plumbing license, a fully stocked service van, and the authority to quote a fixed price on the spot — before touching a single pipe.
We handle everything from 3/4-inch copper repiping to tankless water heater swaps to high-pressure hydro-jetting on grease-clogged commercial lines. That scope is intentional — it means one call to +1-855-718-1500 gets you a tech qualified for the actual job, not a referral chain that burns your afternoon.
Every tech carries a current CA master or journeyman plumbing license and a full liability bond.
Our San Anselmo dispatch center takes live calls every hour of every day — including holidays.
Each van leaves our San Anselmo yard pre-loaded with copper, PVC, PEX, press fittings, and common repair assemblies so we fix it on the first visit.
We quote a fixed price after diagnosing the problem — that number doesn't climb once we start work.
Years of servicing properties across San Anselmo, CA has given our techs a sharp eye for the early indicators that a small fix is about to become a four-figure repair.
Slow or gurgling drains throughout multiple fixtures — often signals a partial blockage or root intrusion in the main sewer line, not just a single clog.
Noticeably lower water pressure — in San Anselmo homes with aging galvanized or copper supply lines, dropping pressure usually means scale buildup or a hidden leak upstream.
Water heater rumbling or popping sounds — sediment has layered on the tank bottom and is reducing efficiency; ignoring it accelerates tank failure.
Sewer odors inside the home — a dried P-trap or a cracked vent pipe is the typical culprit; both need professional inspection before they become a health issue.
Unexplained spike in your water bill — even a small pinhole slab leak wastes thousands of gallons monthly. If your bill jumped without a usage change, call us.
Discolored or foul-tasting tap water — corroded supply pipes or a failing water heater anode rod can introduce rust or sulfur into the line.}
Visible moisture or staining under sinks or along baseboards — even slow seeps rot subfloor material and invite mold growth quickly in humid San Anselmo, CA conditions.
Running toilets that won't stop — a worn flapper or fill valve wastes roughly 200 gallons per day and is a 10-minute fix for our San Anselmo technicians.
From slab leak detection to full commercial repiping, our San Anselmo-based plumbers bring the right equipment and the right credentials to every job category below.
A ruptured supply line or a sewage backup doesn't wait for business hours. Our San Anselmo emergency dispatch routes the nearest available licensed tech to your address, usually within the hour, with shutoff tools, wet-vac equipment, and common repair assemblies already aboard.
Residential Plumbing in San Anselmo covers a wide band of complexity — from a faulty toilet fill valve to a complete PEX repipe of a 1960s home with failing galvanized lines. Our licensed techs assess the actual condition of your supply and drain system, quote the repair honestly, and complete it with materials rated for San Anselmo, CA building code.
Commercial properties in San Anselmo run larger pipe diameters, higher flow rates, and more complex backflow prevention requirements than residential jobs. Our commercial plumbing division carries the equipment and licensing tier needed for restaurants, multi-family buildings, retail centers, and light industrial facilities.
Proper sizing matters. Undersized units run constantly and fail early. We measure the actual hot water demand of your San Anselmo property before recommending replacement capacity.
Slow drains rarely fix themselves. Each week of delay typically means additional root penetration or further grease accumulation, increasing the eventual clearing cost.
Slab leaks are particularly costly in San Anselmo because the soil conditions can accelerate both the pipe corrosion that causes them and the subfloor damage that follows. We use electronic acoustic detection and thermal imaging to locate leaks without tearing up concrete until we know the exact point — minimizing restoration costs.
These aren't marketing slogans — they're operational commitments our dispatch and field teams are held to on every call.
Hourly billing on plumbing work is a mechanism for runaway invoices. We quote the job, not the clock. If the repair takes longer than expected due to our estimate, that's our cost, not yours.
Our dispatch center knows which tech is where in San Anselmo in real time. When you call, you're not waiting for someone to drive from the next metro — you're getting the nearest available crew already loaded and on their way.
We verify license status for every tech before dispatching them. You can request a license number before we arrive.
We document every repair with photos before and after. That documentation protects you if a question ever comes up about what was done and why.
We built our dispatch and repair process specifically to eliminate the three things customers hate most: not knowing when someone is arriving, getting surprised by the invoice, and having to call back because it wasn't fixed right.
A live dispatcher in San Anselmo takes your call 24/7, collects the details, and immediately identifies the nearest available qualified tech. No voicemail trees, no callback queues on emergency calls.
Your CA-licensed plumber arrives with diagnostic tools — camera, acoustic sensor, pressure gauge — and completes a full assessment of the actual problem, not a guess based on your description.
Once the diagnosis is done, you receive a written flat-rate price. If you approve, we start. If you don't, you pay nothing for the visit on emergency calls during business hours.
Work is completed with properly rated materials, tested under operating pressure, and photographed before and after. You receive a copy of the job record for your files and warranty reference.
Our San Anselmo dispatch line is live right now. One call and a licensed plumber is headed your way.
+1-855-718-1500 — We Answer 24/7{These reviews come from customers in San Anselmo and surrounding San Anselmo, CA communities — not a testimonial generator.
"Had a slab leak under our master bathroom in San Anselmo — water was seeping through the grout. Masters Plumbing Service sent a tech the same afternoon. He used an acoustic detector, pinpointed the leak without tearing up the entire floor, and had it repaired in one visit. The quote matched the invoice exactly."
"Called at 9 p.m. on a water heater emergency. Tech showed up, assessed the unit, gave me a flat price for a new 50-gallon install, and had it running before I expected. No upsell, no hassle."
"Finally found a commercial plumber in San Anselmo who quotes grease trap work upfront and actually shows up when scheduled. Their service report is detailed enough that I can file it for health inspection records."
"Root intrusion in my San Anselmo home's sewer line. They ran the RIDGID camera before and after the jetting so I could see exactly what was removed. That transparency is rare and I appreciated it."
"Called about a burst pipe in the garage on a Saturday morning. The dispatcher told me approximately when the tech would arrive, the tech called 15 minutes before arrival, and the pipe was repaired within 90 minutes of my call. That efficiency during an emergency means everything."
"We had a complete repipe done on a 1972 home in San Anselmo — all galvanized replaced with PEX. The crew worked in sections over two days, kept the water off window short each day, and patched the drywall access points cleanly. The water pressure after the job was noticeably better."
These questions come directly from San Anselmo customers — we pulled them from call logs and review feedback because these are the things people actually want to know before hiring a plumber.
Our primary dispatch hub for this area operates out of San Anselmo. That means most calls in the immediate San Anselmo area get the shortest response times — and we extend service to surrounding communities across San Anselmo, CA.
We cover San Anselmo as our primary service zone and extend reliable service to surrounding San Anselmo, CA areas. If you're unsure whether your address is in our service area, call +1-855-718-1500 — dispatch confirms coverage on every call.
Zip codes we serve in San Anselmo, CA include:
