the trade
More Than Twenty Years in the Trade, One Name on the Van
Jose Luis Serrano started in plumbing more than twenty years ago and worked on residential, commercial, and industrial systems across Los Angeles County before founding Ser Plumbing in 2019. He founded Ser Plumbing to bring that experience home to Paramount and the surrounding communities. The name carries the Serrano family name and a standard: Service, Excellence, Reliability.
Ser Plumbing is still owner-operated by design. Luis diagnoses the work, quotes the work, and stands behind the work, with a small trusted team and his wife helping run the office. It is the opposite of the rotating-technician model, and it is why so much of the company's work comes from repeat customers, referrals, property managers, and HOA communities across Southeast LA County.
From First Call to Finished Job, No Surprises
Five steps, every job, no exceptions. You always know what is happening, what it costs, and why — before anyone picks up a tool.
A real person answers, and emergencies move first
During business hours, your call is answered directly, usually by Luis himself. If the team is on a job, calls and messages are almost always returned the same business day. Active leaks, sewer backups, gas concerns, and no-hot-water calls are prioritized, with realistic arrival windows instead of promises that fall apart by afternoon.
Diagnosis before recommendations
We inspect before we quote. Depending on the problem, that can mean a sewer camera in the line, pressure testing, leak investigation, or manufacturer diagnostics on a water heater. The goal is the root cause, not the fastest thing to sell.
A plain-language explanation, with proof
You see what we see: photos, video, and a clear explanation of what failed and why. If a repair will hold, we say so. If replacement genuinely makes more sense, we explain the tradeoff and let you decide without pressure.
A written estimate before any work begins
Pricing is flat-rate for most residential and light commercial work, in writing, with options where they exist. No work starts without your authorization, and approved written estimates are honored unless hidden conditions change the scope, which we discuss with you first.
The work is done right, and the area is left clean
The same owner-led team that diagnosed the job performs it, to code, with shoe covers and drop cloths where appropriate. You get a walkthrough of the finished work, documentation and photos when applicable, and a written warranty that matches the type of repair.
Residential and Light Commercial Plumbing Across Southeast LA County
From same-day drain calls to whole-house repipes, Ser Plumbing handles the plumbing that keeps SE LA County homes and businesses running. Every service below has its own detailed page, and every job starts the same way: a real diagnosis, then a written number before any work begins.
Seven Reasons Neighbors Keep Our Number Saved
Evidence, not guesswork
Sewer cameras, drain locating, pressure testing, and manufacturer diagnostics.
5.0 Stars on Google, Verified and Displayed Live
The reviews below load directly from our Google Business Profile. Nothing is hand-picked, edited, or trimmed. Read what homeowners, landlords, and property managers across Southeast LA County say, then judge us by the same standard.
Real Jobs, Real Homes in SE LA County
Photos from our own trucks and job sites across Paramount, Downey, Bellflower, Long Beach, and the rest of Southeast LA County. No stock photography.
Based in Paramount, Serving Southeast LA County and Nearby Orange County Communities
Ser Plumbing works from a single shop at 7530 Alondra Blvd Suite F in Paramount, which puts most of Southeast Los Angeles County within a short drive. There is no travel fee within 15 miles of our shop; beyond that, travel charges typically start at $49 and are always stated when you book.
Plus jobs by arrangement in Los Angeles, Torrance, and Fullerton, and surrounding Southeast LA County communities.
Straightforward Discounts, No Gimmicks
Ask about any of these when you schedule. One discount per job, and we will tell you which one saves you the most.
Free estimates apply to replacement and installation projects. Diagnostic and troubleshooting visits carry a service fee that can often be credited toward approved repairs.
Claim your discount ↗
ANSWERS
Frequently Asked Questions
Straight answers to the questions we hear on the phone every week.
Ready When You Are. Reach Ser Plumbing Today.
Call, text, or book online. Describe the problem, send a photo if you can, and get a real answer from the plumber who will actually handle it. Emergencies jump the line, day or night.
Call (310) 953-3566 ↗