Trenchless work is still sewer work, and it still needs a permit. Here's who issues it where you live and what the inspection covers.
Written byNew Pro Plumbing·Reviewed byMiguel Lopez, Owner & Licensed Plumber, New Pro Plumbing (CSLB #974600)·Last reviewedSeptember 2026 · 8 min readQuick Answer
Trenchless sewer repair and replacement generally require a plumbing permit and inspection from your local building authority, just like excavated work. Work that reaches into the street can require additional permits. We pull the permits and book the inspection as part of our price. In Marina del Rey, it means a permit from LA County Public Works, because the harbor is unincorporated County land.
A sewer lateral connects your property to the public sewer, so work on it is regulated. Whether the repair is a trench or a liner, the building authority wants to confirm the materials, the connections, and the finished line meet code. That's what the permit and inspection do. This page is part of our complete guide to trenchless sewer repair in Marina del Rey.
Trenchless Sewer Permits: A trenchless sewer permit is the building authority's approval and inspection of lateral repair or replacement done by lining or pipe bursting.
Skipping the permit might save a few days, but it creates a problem that surfaces later: during escrow, after an insurance claim, or when the next contractor finds unrecorded work. Permitted, inspected work is a clean record that stays with the property.
In Marina del Rey, it means a permit from LA County Public Works, because the harbor is unincorporated County land. Marina del Rey is unincorporated, so LA County Public Works Building & Safety issues the permit, not LADBS.
We verify which agency covers your parcel address.
We apply for the plumbing permit and any street-side permits the work needs.
Materials and connections are installed to the standard the inspector checks.
We meet the inspector, close the permit, and give you the records.
Camera first, always. Every recommendation starts with a recorded inspection you can watch yourself, and a flat-rate price you approve before we start.
Marina del Rey is unincorporated Los Angeles County, so permits don't come from LADBS. They come from LA County Public Works Building & Safety, which serves the County's unincorporated communities. That catches some owners and even some contractors off guard. We also confirm jurisdiction by parcel address, because some neighboring pockets are inside City of LA limits and follow City rules instead. Under County Code, the owner is responsible for the whole lateral, including any portion in the street, so if the repair extends that far, we'll tell you what additional County permitting applies before work begins.
Between the harbor, the condo towers, and the townhome rows off Admiralty Way and Via Marina, Marina del Rey's plumbing is dense, shared, and busy. Tight setbacks and paved common areas leave little room to dig, which is why no-dig methods get serious consideration here. We work in English or Spanish with residents, managers, and building staff.
Not sure what your line needs? We camera it first, then quote a flat rate.
Get a Free Quote| Detail | Marina del Rey |
|---|---|
| Area | Marina del Rey, CA 90292 |
| Jurisdiction | Unincorporated Los Angeles County |
| Permits | LA County Public Works Building & Safety |
| 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 |
In Marina del Rey, the permitting agency is LA County Public Works, and a County inspector signs off on the work. Some nearby pockets are inside City of LA limits, so we confirm jurisdiction by parcel address before we pull anything. If your address turns out to be City of LA, we'll switch the permit to LADBS and tell you before work starts.
Example scenario below is illustrative, based on common situations we see. Details vary by property; not a specific customer.
A Marina del Rey owner's first contractor applied for the wrong agency's permit, and the job stalled.
We confirm the parcel is unincorporated County, pull the LA County Public Works permit, and reschedule the lining.
The work passes County inspection, and the owner has the correct permit on record.
Licensed by the CSLB (#974600) and insured, New Pro has been fixing Westside sewer lines, including in Marina del Rey, since 2010. You'll know the scope, schedule, and total cost in writing before we start. Our goal is simple: fix it right once, so you don't have to call us back for the same problem.
Also serving neighborhoods near Marina del Rey: Ocean Park, Venice, Playa Vista, Playa del Rey. See all Westside service areas.
The Bottom Line
Trenchless or not, sewer work should be permitted and inspected. We handle the permit and the inspection as part of the flat-rate price and give you the records.
Generally yes. Lining and bursting are sewer lateral work, and building authorities permit and inspect it like excavated repairs. Most sewer repairs need a plumbing permit and a final inspection. In the City of LA that goes through LADBS; unincorporated LA County (including Marina del Rey) goes through LA County Public Works Building & Safety.
It’s included in our flat-rate price. You won’t see it added later. Work in the public right-of-way (street, alley, parkway) often adds a separate excavation or use-of-street permit. See our sewer permit page for how these stack.
It varies by agency and workload. We build the permit time into your schedule and tell you what to expect. Skipping the permit can void insurance claims and create disclosure problems at sale. We pull permits under our license so the record is clean and connected to a permitted job.
It can complicate a sale, a refinance, or an insurance claim. In some cases the work has to be inspected after the fact or redone. It’s much easier to do it right the first time. Verify any plumber’s active license at the CSLB portal before you agree to permitted work. An unlicensed contractor can’t legally pull a plumbing permit in California above the $500 threshold.
No. Marina del Rey is unincorporated LA County, so permits come from LA County Public Works Building & Safety. We confirm jurisdiction by parcel first. For Marina del Rey we pull the permit at LA County Public Works Building & Safety; the County process differs from the City.
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.
Trenchless work is still sewer work, and it still needs a permit. Here's who issues it where you live and what the inspection covers.
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