Sewer Lateral Replacement in Marin County.
Replace your aging or damaged sewer line with less excavation and less disruption to your property. Trenchless pipe bursting — done right the first time.
Do I Need to Replace My Sewer Lateral?
Your lateral runs from the house to the public main — and in Marin, you own it. Most are clay or cast iron, 50 to 100 years old. Here's when repairing stops paying off.
Invasive Tree Roots
Oak and redwood roots pry into old clay joints. Cut them back and they grow right back.
Cracked or Collapsed Clay Pipe
Aging clay and cast iron crack, sag, and collapse. Patching one spot just delays the next.
A Failed Camera Inspection
The camera shows breaks, bellies, and root masses. Failing end to end? Replace it.
Backups That Keep Coming Back
Snaking the same line every few months isn't a fix. Recurring backups mean it's done.
A Sale or Remodel Requirement
Many Marin districts require a passing lateral before you can sell or remodel.
You've Patched It More Than Once
Two or three repairs on one line? One replacement beats a string of emergencies.
What Is Trenchless Sewer Replacement?
Trenchless replacement swaps your old lateral for a new one without trenching your yard. We pull a bursting head through the old pipe, shattering it while drawing seamless HDPE into its path.
Two small pits instead of an open trench. New pipe rated 50 to 100 years — and your landscaping, hardscape, and driveway stay put.
Inspect & Access
Camera the line, then open two small pits — one at the house, one near the main.
Burst & Replace
A bursting head fractures the old pipe and pulls new HDPE into its place.
Test & Restore
Test the line, tie in, and backfill the pits. No trench to rebuild.
Traditional Excavation vs. Trenchless.
Both end with a new line. The difference is how much of your property you rebuild afterward.
| Traditional Excavation | Trenchless Pipe Bursting | |
|---|---|---|
| Digging | Open trench along the whole run | Two small pits at each end |
| Your Yard | Lawn and landscaping torn up, then rebuilt | Gardens and hardscape mostly untouched |
| Driveway | Often cut and re-poured | Usually crossed intact |
| Time On Site | Several days, plus restoration | Often same day; larger jobs 1–2 days |
| New Pipe | PVC or HDPE, rated 50–100 years | Seamless HDPE, rated 50–100 years |
| Best For | Collapsed or badly misaligned lines | Most residential laterals |
Less Digging. Even on a Hillside.
Will You Dig Up My Landscaping or Driveway?
Usually not. Two small pits mean gardens, pavers, and driveways stay put — that's the point of going trenchless. If one spot must be dug, we open the smallest area possible and put it back.
Can Trenchless Work on Hillside Properties?
Often it's the better call on a slope. On Marin hillside lots — Mill Valley, Tiburon, the San Rafael ridges — less digging means less risk to retaining walls and terracing. We check the pipe path first, and tell you straight if a section needs digging.
Marin's Sewer Lateral Rules, Explained.
Marin has no single countywide lateral ordinance — your rules depend on the sanitary district that serves your address, and two homes on one block can answer to different agencies. Find out who governs your parcel before you list or remodel.
- Selling the property (a point-of-sale inspection)
- A remodel or addition over a set dollar amount
- Adding a bathroom
- Nearby sewer-main rehabilitation or road resurfacing
Ross Valley Sanitary District
Certificate required at sale (90 days after close of escrow), on remodels over $75,000, or when adding a bathroom. Grant and loan programs can offset replacement.
Sanitary District No. 5 (Tiburon & Belvedere)
Ordinance 2014-02a triggers a camera inspection at sale, on remodels over $50,000, or from nearby main or road work.
Tamalpais CSD (Tam Valley)
Inspection required once improvements top $40,000 over three years — no final building permit without the certificate.
Sanitary District No. 2 (Corte Madera)
Adds a district-witnessed pressure test before the certificate is issued.
Marin's Laterals Are Our Backyard.
We Know Marin's Districts
Every agency, threshold, and permit path — handled, not guessed.
Camera First, Quote Second
We inspect before we price. You see the footage.
Upfront Price, No Surprises
The quote is the price. No add-ons, no after-hours surcharges.
Built to Last Decades
New HDPE rated 50 to 100 years. Done right, done once.
Straight Answers on Lateral Replacement.
How much does sewer lateral replacement cost in Marin County?
How long does the job take?
Will I lose water or sewer service during the work?
Do I need a permit?
Is trenchless always possible?
Does homeowner's insurance cover it?
Get a Sewer Replacement Estimate.
Camera inspection, a straight quote, a fix that lasts. We'll get a plumber to your Marin home fast.