GS Plumbing 1 Inc. is a residential and commercial plumbing company serving Los Angeles, the San Fernando Valley, and surrounding communities.

We provide emergency plumbing, general repairs, drain cleaning, hydro jetting, sewer service, leak detection, slab leak repair, water heaters, repiping, water and gas lines, fixtures, and commercial plumbing — including construction and tenant improvements.
Customers choose GS Plumbing because they need a plumber who listens to the problem, inspects the relevant system, and explains findings in clear language — then recommends work that fits the property.
Properly qualified plumbers for the work we take on.
Code-compliant installs and lasting repairs.
Honest diagnosis explained in plain language.
Serving LA and the San Fernando Valley.
The sequence matters more than any promise about it. We start by understanding the symptoms and the history — what you are seeing, when it started, whether it has happened before, and how many fixtures are involved.
Then we look at the relevant system rather than only the visible failure. A backed-up drain and a failed sewer lateral present identically at the fixture; a camera inspection is what separates them. A rising water bill could be a fixture, an irrigation valve, or a line under the slab, and leak detection narrows it before anything is opened.
Findings and options get explained in plain language, including when the cheaper option is the right one. Repeatedly clearing a line that has failed structurally is money spent on a symptom, and we would rather say so than keep clearing it.
GS Plumbing 1 Inc. holds California contractor licence CSLB #1131141. That is worth verifying for any plumber before work begins — the CSLB register is public and takes a moment to search.
Licensing matters most on the work you cannot inspect afterwards: gas piping that has to be pressure-tested, water heater installations that need correct venting, seismic strapping and a properly routed relief-valve discharge, and anything permitted and inspected. Those are the jobs where the difference between compliant and cheap is invisible until something goes wrong.
We work both, and they are genuinely different jobs. In a home, failures are usually gradual and contained. Commercial properties fail on volume and on schedule — a restaurant kitchen puts more grease through a line in a week than a household does in a year, and multi-tenant buildings concentrate several units onto shared stacks, so one blockage affects people who did not cause it.
The practical consequence is that commercial work gets planned around trading hours, tenant access, and what can be isolated without shutting the building — before the work starts, not during it.
We serve Los Angeles and the surrounding communities, with dedicated pages for Burbank, Pasadena, Culver City, Beverly Hills, West Hollywood, North Hollywood and the San Fernando Valley.
We are a service-area business — we come to you. Available 24 hours a day, Monday through Sunday. Call (323) 303-0060.
Yes — California CSLB #1131141. The CSLB register is public, and checking any contractor’s licence before work begins is a reasonable thing to do rather than an insult.
Both. Multi-tenant buildings, restaurants, retail and office properties are routine work alongside residential service, and the scheduling and access questions that come with occupied commercial space are planned into the job rather than improvised.
That is the intent. Some backups that look structural are heavy buildup and clear with cleaning; some water heaters that look finished need a component rather than replacing. Saying so is more useful than selling the larger job, and it is why diagnosis comes before the quote.
Call now or request service online — we serve Los Angeles and the San Fernando Valley.
GS Plumbing 1 Inc. · Licensed plumbing contractor CSLB #1131141 · 5.0 out of 5 stars from 40 Google reviews · Serving Los Angeles and surrounding areas · Open 24 hours · (323) 303-0060