Private Sewer Lateral Services in Contra Costa County.

FAQ

Common questions

What homeowners ask about sewer laterals and compliance.

01What is a private sewer lateral?

The private sewer lateral is the pipe that connects your home's plumbing to the public sewer main — it typically runs under your yard, driveway, and the sidewalk or street in front of your property. Unlike the main sewer line, which the sewer district maintains, the lateral is the homeowner's pipe and responsibility.

02Is the sewer lateral my responsibility as the homeowner?

Yes. In Contra Costa County, Central Contra Costa Sanitary District (Central San) considers the lateral — from your house to the connection at the public main — the property owner's responsibility to maintain and repair.

03When is a PSL compliance certificate required?

It depends on your sewer district. The EBMUD Regional Private Sewer Lateral Program requires a compliance certificate for properties in Oakland, Alameda, Albany, Emeryville, Piedmont, El Cerrito, Kensington, and Richmond Annex — typically triggered by a property sale, a remodel permit over $100,000, or a water meter size change. Guerra Bros' core service area (Concord, Walnut Creek, Martinez, and the rest of Contra Costa County) falls under Central San, which does not currently require a point-of-sale certificate, though a permit is required for any lateral repair work. Confirm your specific requirement with your city or sewer district — we're happy to help you figure out who to call.

04Do I need a sewer lateral inspection before selling my home?

Central San doesn't require one for a sale, but a pre-listing camera inspection is a smart way to avoid a surprise during escrow — buyers and their inspectors frequently flag sewer condition, and knowing in advance lets you address it on your own timeline instead of under contract pressure.

05What happens if the sewer lateral fails inspection?

We show you the camera footage and explain what's causing the failure — root intrusion, a crack, an offset joint, or a collapsed section — along with your repair options and cost. Nothing happens without your approval.

06Can a damaged lateral be repaired without digging up the entire yard?

Often, yes. Trenchless methods like CIPP lining or pipe bursting can repair many types of damage with minimal excavation, provided the pipe is structurally sound enough to support the method. Collapsed sections or severe bellies may still require targeted excavation — we'll tell you which applies after the camera inspection.

07How long does sewer lateral repair take?

A spot repair or trenchless lining is often completed in a single day. A full lateral replacement typically takes 1–3 days depending on depth, length, and permitting. We give you a timeline before work begins.

08Does Guerra Bros. Plumbing issue the compliance certificate?

No. We perform the inspection, repairs, and documentation of the work — the compliance certificate itself is issued by the applicable sewer district or program (such as EBMUD), not by Guerra Bros. Plumbing.

09Which East Bay cities are covered by the Regional PSL Program?

The EBMUD Regional Private Sewer Lateral Program covers Oakland, Alameda, Albany, Emeryville, Piedmont, El Cerrito, Kensington, and Richmond Annex (Berkeley runs its own separate program). This differs from Guerra Bros' core Contra Costa County service area — if you're unsure which program or district applies to your address, we can help you figure it out.

10How do I request an estimate?

Call us at (925) 288-0409 or fill out our free estimate form and select "Private Sewer Lateral." Let us know if you're selling, remodeling, pulling a permit, or working from an existing inspection report, and we'll follow up with next steps.