What is sewer repair & replacement and when do you need it?
Sewer repair and replacement is what Avanté Plumbing does when the pipe carrying waste from your building to the public main has failed rather than simply blocked — and this covers both the lateral and the sewer main line itself. The signs are hard to miss once you know them: sewage backing up into the lowest drains, several fixtures failing together, a persistent smell in the yard, unusually green grass tracking along the line, or a lateral needing cleared every few months. In older Sonoma and Marin neighbourhoods the cause is usually clay or cast iron that has cracked, sagged into a belly holding standing water, or been split open by tree roots. A camera inspection separates a spot repair from a full replacement, so we look before quoting. In most of our service area the owner owns that pipe to the main. CSLB #841938.
How do I know if I need a sewer repair or replacement?
If you're experiencing frequent clogs, slow drains, or unpleasant odors, it might be time for a sewer repair or replacement. Our expert plumbers can assess the situation and provide a free, detailed estimate.
What does the sewer repair process involve?
Our process starts with a thorough inspection using advanced camera technology to identify the problem clearly. Then, we'll recommend the best solution whether it’s a simple repair or a full replacement.
How much does sewer repair or replacement cost?
The cost varies based on the complexity of the job. During our inspection, we provide a detailed estimate so there are no surprises. We offer competitive pricing to give you the best value for your money.
Last updated: August 2026 · Written by Karl D'Angelo, CSLB #841938 (C-36 Plumbing), plumbing in Sonoma & Marin since 2004.
Signs You Need Sewer Repair: There are several indicators that you may need this service: slow drains, gurgling noises from your pipes, unexplained water puddles in your yard, and unpleasant odors. If you notice any of these, it's important to act swiftly.
Advanced Inspection Techniques: We employ state-of-the-art inspection techniques, including video camera inspections. This allows us to precisely diagnose the problem without unnecessary digging.
Repair or Replacement Options: Based on our assessment, we can determine whether repair or replacement is the best option. We provide trenchless solutions where possible, which are less disruptive and more cost-effective.
Experienced Professionals: Our team at Avante Plumbing consists of skilled experts dedicated to handling each situation with care and precision. We're licensed and insured for your peace of mind.
Customer Satisfaction: Your satisfaction is our priority. We commit to clear communication throughout the process, ensuring you are informed and confident in the solutions we provide.
If your sewer system is giving you trouble, trust Avante Plumbing to resolve the issue efficiently and affordably. Contact us today and let us help you return your home to working order smoothly.
Our expert team conducts a thorough inspection of your sewer line using advanced camera technology to accurately diagnose the problem and determine the best solution for repair or replacement.
We provide you with a transparent, detailed estimate and walk you through each step so you know exactly what to expect during the repair or replacement process.
Our licensed professionals perform the sewer repair or replacement with precision, ensuring minimal disruption to your property and maintaining high-quality standards.
Common questions
Sewer Repair & Replacement FAQs
How long does a sewer repair take?
A typical sewer repair can be completed in one to two days, depending on the severity of the damage. We work efficiently to restore your home's plumbing as quickly as possible.
Is your work guaranteed?
Absolutely. We stand behind our work with a satisfaction guarantee and offer warranties on our repairs and replacements for your peace of mind.
What should I expect on the day of service?
Our professional team will arrive on time with all the necessary equipment. They'll prioritize minimizing disruption to your home and cleaning up before they leave.
Should a sewer line be repaired or fully replaced?
It depends on how much of the run has failed. A single crack, one offset joint or a localised root intrusion is a spot repair. Widespread root intrusion along the length, a pipe that has lost its shape, repeated failures in different places, or a belly that holds water are replacement conversations — patching one section of a line that is failing generally just moves the next failure a few feet. A camera inspection settles it.
How long does a sewer lateral last?
It depends heavily on material. Clay and cast iron laterals, common on pre-1970s houses across Sonoma and Marin, are typically at or past the end of their service life now and are the ones that show root intrusion at every joint. Modern ABS and PVC lines have a far longer expected life. Several Marin districts use age as a trigger in their own ordinances — Sonoma Valley's lets the district call in any lateral 30 years or older.
Do I need a permit to replace a sewer lateral?
For work connecting to the public sewer, yes. Permit Sonoma lists building sewers, side sewers, laterals, mains and manholes under its sanitation sewer construction permit, and its schedule shows a $257 plan check for a sewer line from the main to a building. In Marin the serving sanitary district administers it, and several also require a compliance certificate afterwards.
Trusted locally
What customers say
“Karl came in and was polite, professional, and did a fantastic job.”
“Carl came to install a new toilet for me and was very easy to work with. He was very thorough & I recommend his services.”
“I am glad to write review For mr.Karl D'Angelo from /Avante Plumbing/. Show on time, efficient, creative price is reasonable. Will call back.”
Rated 4.9 stars across 32 Google reviews — read all 32 reviews or see photographs of 21 completed jobs.
Sewer Repair & Replacement near you
Sonoma & Marin County
Need sewer repair & replacement?
Call (707) 231-0790 or send a note — we'll get back to you fast with a straight answer.
Licensed, bonded & insured · CSLB #841938 · Mon – Sun, 7:00 AM – 7:00 PM