If your sewer lateral fails in Los Angeles County, the pipe is yours. Not partly yours. Yours all the way out to where it meets the public main, including the length that runs under the sidewalk and under the street. Los Angeles County Code 20.24.080 says so plainly, and the county public works FAQ that publishes it does not leave room for a creative reading.
That is the bad news, and it is the part every article about LA sewers gets right.
Here is the part most of them get wrong. The City of Los Angeles runs a rebate program for sewer lateral repair, administered by LA Sanitation at sanitation.lacity.gov. It is a real program. It is also not the program you will land on if you search for "LA repair rebate" and click the first city page you see, because the city runs a separate rebate program for sidewalks at sidewalks.lacity.gov. Two programs, two departments, two sets of rules, similar names. We have watched write-ups send sewer owners to the sidewalk page and vice versa.
What the code actually says about your lateral
Start with the boundary, because the boundary decides the size of the job before anyone quotes you a price.
Under County Code 20.24.080, the adjacent owner is responsible for the lateral up to its connection with the public main, expressly including the portion beneath the sidewalk and the street. That is the widest version of owner responsibility: the segment that is most expensive to dig, permit, and restore is on your side of the line.
People often reach for California Streets and Highways Code §5610 here, and that is a different statute doing a different job. §5610 is the statewide sidewalk duty: the adjacent owner maintains the sidewalk fronting the property. It is the backbone of the whole owner-pays pattern in California, and we cover it in the California sidewalk law guide. It is not what makes your sewer lateral yours. Around Los Angeles, that is the county code, and the two get cited interchangeably by people who have read neither. Confirm which body of rules governs your specific address with the agency that actually bills you, because city, county, and sanitation-district boundaries do not line up neatly on a map.
Worth knowing: California is not internally consistent on laterals, so do not assume LA's rule travels. San Francisco matches it and then some, with SFPUC putting both the upper and lower lateral on the owner. Alameda goes the other way and treats the lower lateral, from property line to main, as the city's. Riverside splits at the property line and cleanout. Same state, three different answers, and the difference is measured in street excavations.
The rebate program: what we can actually confirm
LA Sanitation publishes a sewer lateral repair rebate at sanitation.lacity.gov/services/sewer-lateral-repair-rebate. That the program exists, and which department owns it, is what our sourcing supports.
What we are not going to do is invent the rest. We have seen pages quote confident rebate percentages, dollar caps, application windows, and approved-contractor requirements for this program. We could not verify any of those figures against the city, so we are not repeating them. A number you cannot source is worse than no number, because it is the one you will budget against.
What we can tell you is how programs of this shape generally behave, and what that means for your sequence of moves. Rebate and cost-share programs typically have eligibility rules, a defined application window, and paperwork that has to happen in a particular order. That order almost always puts the application before the hiring, not after. Chicago's shared-cost sidewalk program is the clearest documented example of how tight that window can be: applications have opened and filled within days.
So the practical rule is simple. Call the department before you call the plumber. Ask what the current terms are, in this budget year, from the people who administer it. Get the answer from LA Sanitation directly rather than from a contractor with an interest in you signing today.
The sequence that actually saves money
Get a camera inspection first. A scope run through the line tells you what the defect is and how far out it sits, which matters because the location determines whether you are looking at a yard dig or a street dig, and because it makes competing bids describe the same problem instead of three different guesses.
Then confirm the boundary. In LA that means confirming the defect is on your side of the connection to the main, which under 20.24.080 it almost certainly is, but "almost certainly" is not the same as checked.
Then contact LA Sanitation about the rebate, before you sign anything. Ask whether the program is currently accepting applications, what documentation it requires, and whether the work has to be approved in advance. If the answer is that pre-approval matters, hiring first is how you disqualify yourself from money that was sitting there.
Then get itemized bids. Method, footage, depth, and permits broken out separately, from two or three licensed plumbers. We do not publish a repair cost range for this, and the reason is worth reading: the same failure produces wildly different bills depending on how much pipe the city says is yours and what is sitting on top of it.
Why this program stays invisible
Rebates are announced, not advertised. They live on department pages that homeowners visit exactly once, during the week something has already gone wrong, which is the worst possible week to be learning municipal program structure from scratch. Add a second city rebate program with a similar name for a completely different kind of repair, and the search results do the rest.
None of this changes the underlying rule. In Los Angeles the lateral is yours, all the way to the main, under the street. The rebate does not shift that responsibility. It reduces what the responsibility costs you, if you find it in time.
Most owners never do. That is the whole point of writing it down.
Other cities draw the line in other places, and some of them draw it much more favorably. Browse by issue to see where your city actually stands.