Plumbing help for Los Angeles, CA
Emergency Plumber in Los Angeles, CA: LADBS Permits, Backwater Valves and Your Sewer Lateral
Los Angeles is a very large city with its own permit office, water utility and sewer bureau, and not every Los Angeles address sits inside it. This page helps you work out which rules apply to your pipes.
Is your address in the City of Los Angeles? Check before you call anyone
A Los Angeles mailing address does not always mean the City of Los Angeles. East Los Angeles, for example, is unincorporated and gets its permits from Los Angeles County. The answer decides which office issues permits and which utility owns the pipe.
- If your address is inside the City, building questions go to LADBS. Dial 3-1-1 inside the City or (213) 473-3231 from outside.
- If it is unincorporated, permits come from the County. See plumbing rules in East Los Angeles.
- If it is in a neighboring city, that city's rules apply.
Ask the dispatcher if you are unsure. The call is quick, and it saves you from filing a wrong permit application or waiting in the wrong line at the wrong office.
Los Angeles gas water heater: permit or LADBS registration
LADBS says a gas water heater replacement in a single-family home generally needs a plumbing permit. The exception is a contractor who holds an LADBS Certificate of Registration and installs a heater of equivalent capacity, BTU rating and vent capacity.
Ask the plumber which path applies to your job, and put the answer in the quote. PermitLA, the City's online system, handles simple projects that do not need plan review, and in-person service is by appointment.
Water heater down in Los Angeles? Call to talk through the swap and which permit path applies.
Where the City sewer ends and your lateral begins
The City's sanitation bureau says the public sewer mainline belongs to the City, and the property owner is responsible for maintaining and repairing the entire lateral. The City defines the lateral as running to the middle of the street.
| Piece | Who owns it | Who to call |
|---|---|---|
| Pipe inside the house | Owner | A plumber |
| Lateral to the property line | Owner | A plumber |
| Lateral under the sidewalk and street to mid-street | Owner | A plumber, with the right permit |
| Mainline in the street | The City | The sanitation bureau, 1-800-773-2489, as listed by the City |
Ask the plumber to camera the line and show you where the problem sits before approving a dig. If it sits in the mainline, the City handles it. Read about repairing a failed sewer line to see what a good scope contains.
Two permits that surprise owners: a backwater valve and a sidewalk dig
The City says a backwater valve is needed where the lowest plumbing fixture sits below the street manhole cover, and that installing one needs an LADBS permit. Ask the plumber to compare elevations before the next backup.
Work in the public right-of-way is separate. The City says it needs a Class A permit from the Bureau of Engineering. A licensed plumber can repair the private portion without it. If the repair reaches the sidewalk or street, the permit has to be in hand before digging starts.
Discolored water or odd smells: report to the water utility
The Los Angeles Department of Water and Power runs a water quality line at (213) 367-3182, Monday to Friday, 8 a.m. to 4 p.m. Discolored water, odor or objects at the tap belong there before you assume the problem is in your pipes.
If the utility finds nothing wrong, the cause is likely inside the house. Read when old supply pipes need replacing if the discoloration returns.
Apartments, condos and shared lines in the City
Many City of Los Angeles homes are in multi-unit buildings, where the building owner or HOA owns shared risers and drains. A clog that affects several units is usually a building matter, and the manager should hear about it before a plumber is hired at your own cost.
Ask the manager three things: who owns the line, who has authority to hire a plumber, and whether a written report is needed for insurance. A tenant should check the lease before paying for any repair out of pocket, and ask the manager to approve the work in writing.
- Photograph the damage and any standing water.
- Send the manager a written notice with the date and time.
- Keep receipts for anything you pay for in the meantime.
Hillside lots: laterals under steps, walls and driveways
Parts of the City sit on slopes, and a lateral may run under steps, retaining walls or a driveway. A dig there costs more and may need more permits. Ask the plumber whether relining can avoid the surface work. Trenchless repair explains when that is realistic.
Ask for a camera survey first. The footage shows the real depth and path, and it lets you compare quotes on the same facts.
Los Angeles addresses: how we confirm the call and the plumber
Downtown Los Angeles lies west of Alhambra. A call from the City of Los Angeles reaches the same dispatch line as every Alhambra call, and the dispatcher confirms your address and availability before sending anyone.
Call (833) 571-0120. California requires a contractor license for jobs of $1,000 or more, labor and materials together, so check the plumber at cslb.ca.gov and ask about the LADBS registration too.
Los Angeles plumbing questions
Does a Los Angeles mailing address mean I am in the City of Los Angeles?
Not always. East Los Angeles, for example, is unincorporated and gets permits from Los Angeles County. Check which jurisdiction your address is in before you apply for a permit.
Who owns the sewer lateral in Los Angeles?
The City says the mainline belongs to the City, and the property owner is responsible for the entire lateral, which runs to the middle of the street.
Do I need a permit to dig in the sidewalk in Los Angeles?
Yes. The City says work in the public right-of-way needs a Class A permit from the Bureau of Engineering. A licensed plumber can repair the private portion without it.
Plumbing trouble in Los Angeles?
Give the address and say what failed. You will hear whether your address is in the City of Los Angeles and what the visit should cover.