The part of your sewer lateral under the street is still yours to maintain. Trenchless methods can reach it without cutting the road.
Written byNew Pro Plumbing·Reviewed byMiguel Lopez, Owner & Licensed Plumber, New Pro Plumbing (CSLB #974600)·Last reviewedSeptember 2026 · 8 min readQuick Answer
Your sewer lateral runs from the house to the public main, often under the parkway, sidewalk, and street. In most local jurisdictions, the owner is responsible for the entire lateral. Trenchless repair can often renew the street-side section from your property, but it can require additional permits. In Mar Vista, LA Sanitation calls this the lower lateral, and the property owner is responsible for maintaining it.
Many owners assume the city or county is responsible once the pipe leaves their yard. In most local jurisdictions, that's not the case: the owner maintains the lateral all the way to its connection with the public main, including the part under the parkway, sidewalk, and street. That's often where the oldest pipe and the most root damage are. This page is part of our complete guide to trenchless sewer repair in Mar Vista.
Trenchless Lateral-to-Main Repair: A lateral-to-main repair renews the section of a private sewer lateral between the property line and the public sewer main, often under the parkway and street.
Repairing it by excavation means cutting the sidewalk or street, traffic control, and restoration to public standards. Trenchless methods can often renew that section from access on your side, lining or bursting through to the connection at the main.
In Mar Vista, LA Sanitation calls this the lower lateral, and the property owner is responsible for maintaining it. LA Sanitation splits the lateral into upper and lower sections; Mar Vista owners are responsible for both.
We record the lateral all the way to the connection.
We verify what your jurisdiction requires for street-side work.
Lining or bursting reaches the main without an open trench in the road.
We verify the connection at the main and document it.
Camera first, always. Every recommendation starts with a recorded inspection you can watch yourself, and a flat-rate price you approve before we start.
In Mar Vista, LA Sanitation's terms are useful: the upper lateral runs from the house to the property line, and the lower lateral runs from the property line to the main, usually under the parkway and street. Owners are responsible for maintaining both. In Mar Vista, the lower lateral is often the worst part of the line, because it passes right under the parkway street tree. We camera all the way to the main, and when the lower section needs work, we plan it from your side of the property line, with the City permitting that street-side work may require.
Mar Vista is our home base, so we see its housing stock every week — pre-war and postwar homes where the sewer line is often as old as the house. Many laterals here have been patched once or twice over the years, so a single run can mix clay, cast iron, and newer plastic. If the fix can wait, we'll tell you that too, and show you what to watch for in the meantime.
Not sure what your line needs? We camera it first, then quote a flat rate.
Get a Free Quote| Detail | Mar Vista |
|---|---|
| Area | Mar Vista, CA 90066 |
| Jurisdiction | City of Los Angeles |
| Permits | LADBS (City of Los Angeles) |
| Typical access | A cleanout or two small access pits |
| First step | Camera inspection with a copy of the recording |
| Pricing | Flat-rate, in writing, before work starts |
| Availability | 24/7, including weekends and holidays |
| License | CSLB #974600, insured |
| Languages | English and Spanish |
Because Mar Vista is City of LA, your sewer repair runs through an LADBS plumbing permit and inspection. Permitted work leaves a paper trail for buyers, lenders, and insurers; unpermitted sewer work tends to surface at the worst time, during escrow. We'll tell you up front if your job needs anything beyond a standard plumbing permit.
Example scenario below is illustrative, based on common situations we see. Details vary by property; not a specific customer.
A Mar Vista owner renewed the yard section of the lateral years ago, but backups continue.
Our camera shows the lower lateral under the parkway tree is cracked and root-packed; we line it from the cleanout to the main.
The backups stop, the parkway and street stay intact, and the owner's whole lateral is now renewed.
Owner-led and based in Mar Vista, New Pro treats every Mar Vista property the way we'd want our own family's home treated. Our trucks carry the camera, locating, jetting, and repair equipment most sewer jobs need. You can verify our license anytime on the CSLB website.
Also serving neighborhoods near Mar Vista: Del Rey, Culver City, Westdale, Mar Vista Hill. See all Westside service areas.
The Bottom Line
The street section of your lateral is usually your responsibility, and often the worst part of the line. Trenchless methods can renew it from your side, with the right permits in place.
In most local jurisdictions, yes: the owner maintains the lateral to its connection with the main. We’ll confirm the rules for your address. In the City of LA, the owner’s responsibility runs from the building all the way to the connection at the public main, including the section under the parkway or street. See LASAN’s sewer lateral information page.
Often, yes. The camera tells us whether the connection and the street section are suitable for lining or need bursting. For unincorporated Marina del Rey, LA County Public Works applies the same principle: the private lateral is the owner’s to maintain, including the segment in the public right-of-way. See the County’s private lateral maintenance page.
The goal of trenchless is to avoid it. If a connection issue requires excavation at the main, we’ll tell you before any work is scheduled. Work in the right-of-way triggers an additional permit and, sometimes, traffic control. We include those items in the flat-rate quote so nothing is a surprise.
It can. Work in the public right-of-way often requires permitting beyond the standard plumbing permit, and we include that in the plan. For lining a lateral all the way to the main, we launch from a cleanout and reinstate any branch connections after the liner cures. See our trenchless sewer repair overview.
Under LA Sanitation’s description, yes. The owner maintains both the upper and lower lateral. We camera to the main and plan the permits for any street-side work. In Mar Vista (City of LA), the owner’s responsibility runs to the connection at the public main, per LASAN’s lateral information.
This page was written by the New Pro Plumbing content team and reviewed for technical accuracy by Miguel Lopez, owner and California-licensed plumber (CSLB #974600). Agency rules are summarized from the official sources above; programs and requirements can change, so confirm current details with the agency. Nothing here is a quote. We confirm scope and pricing in writing before any work begins.
What’s new: September 2026, first publication.
The part of your sewer lateral under the street is still yours to maintain. Trenchless methods can reach it without cutting the road.
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