If a plumber has told you your sewer line needs work, you've probably heard two very different numbers: one for trenchless lining, one for digging it up. Here's how the costs actually break down in San Diego — and how to tell which method your property needs.
The two methods, in plain terms
Traditional excavation means opening a trench along the failed pipe, removing it, and laying new pipe in its place. It's the oldest fix in the book, and sometimes still the right one.
Trenchless repair rebuilds the pipe from the inside. CIPP (cured-in-place pipe) lining pulls an epoxy-saturated liner through the old pipe and cures it into a new structural pipe-within-a-pipe. Pipe bursting pulls a brand-new pipe through the old one's path, breaking the old pipe outward. Neither requires a trench across your yard.
Where the money actually goes
On paper, excavation materials are cheaper per foot than a CIPP liner. But the pipe itself is rarely the expensive part of a dig job. The real cost drivers are everything the trench touches:
- Demolition and haul-away of concrete, pavers, or asphalt above the line
- Landscape and hardscape restoration — often thousands on established San Diego yards
- Hand-digging surcharges near utilities, trees, and structures
- Extra days of labor, traffic control, and city inspection scheduling
The San Diego math
In San Diego County, a straightforward open-trench lateral replacement on soft dirt might land in the $4,000–$8,000 range before restoration. Add a driveway, mature landscaping, or a line under the slab, and total project cost commonly doubles once concrete and landscape restoration are included.
A residential CIPP lining job typically runs $5,000–$12,000 depending on length, diameter, and access — with essentially zero restoration cost and a one-day timeline. Once restoration is honestly counted, trenchless wins on total price in most established neighborhoods from Chula Vista to Carlsbad.
When digging is genuinely the right call
Trenchless isn't magic, and any contractor who says otherwise is selling. Lining requires a host pipe that still holds its shape. A collapsed, bellied, or severely offset line may need excavation. Spot failures on otherwise healthy pipe may only need a small sectional repair.
This is why a camera inspection comes first — always. If a company quotes a liner or a dig without showing you footage of your actual pipe, get a second opinion.
Questions to ask before you sign anything
- Can I see the camera footage of my line, start to finish?
- Is this quote for lining, bursting, or excavation — and why that method?
- Does the price include restoration of whatever the repair touches?
- What's the warranty, and is the liner structurally rated (50 years)?
- Will you camera-verify the finished work before you leave?
