Sewer line cost by method
For a 50-foot residential lateral, 5–6 ft deep with one cleanout and a residential permit, the method sets the price. On this calculator the trenchless methods cost more than an open trench under a lawn, and about the same as an open trench through paving:
Work past the property line (the public right-of-way) adds permit and traffic-control cost.
Trenchless vs open-trench
The headline price isn't the whole story — restoration is:
- Open-trench — the lowest per-foot rate under a lawn ($60–$110 a foot before markup, plus $4–$7 per sq ft to restore the lawn), but it tears up everything above the line. Through concrete or asphalt it is $110–$175 a foot with the paving restored, close to pipe bursting at $110–$180, so an open dig under a driveway loses its price advantage.
- Pipe-burst — two small access pits instead of a full trench; ideal when the old pipe is collapsed and you want to save the landscaping.
- Cured-in-place lining (CIPP) — the least digging, but it needs a structurally sound host pipe to line.
What drives the cost beyond method
Three factors swing a sewer bid (rates here are before contractor markup): depth (the calculator adds $12–$22 a foot at 5–6 ft and $40–$70 a foot at 9–10 ft as excavation gets harder), length of the run, and pipe material (PVC is cheapest at $4.50–$7.50/ft; HDPE and cast-iron cost more). Add cleanouts ($350–$600 for one, $650–$1,100 for two) and surface restoration. The smartest first dollar is a camera inspection ($200–$400): it shows exactly where and why the line failed — roots, a belly, a collapse — so you fix the real problem, and a post-job camera run verifies the repair.
FAQ
How much does sewer-line replacement cost in 2026?
On this calculator a 50-foot lateral, 5-6 ft deep with one cleanout and a residential permit, runs $7,300-$13,800 by open trench under a lawn, $10,600-$18,500 by pipe bursting and $11,600-$20,700 with a cured-in-place liner. Right-of-way work past the property line adds permit and traffic-control cost.
Trenchless vs open-trench?
Trenchless saves landscape, hardscape, and tree roots, but needs intact endpoints and a host pipe in good enough shape (for lining) or pullable (for bursting). Open-trench is more disruptive but works on any soil/condition.
Do I need a permit to replace a sewer line?
Almost always. Sewer-line work needs a plumbing permit from the local building department, plus a separate right-of-way permit if any portion crosses the public side. On this calculator a residential sewer permit is $250-$600 and a right-of-way permit $500-$1,500.
How much does trenchless sewer line replacement cost?
For a 50-foot lateral on this calculator, pipe-bursting runs $10,600-$18,500 and cured-in-place lining $11,600-$20,700, against $7,300-$13,800 for an open trench under a lawn. Trenchless pays off when the dig would cross a driveway, patio or mature landscaping: an open trench through paving runs $10,300-$17,700.
Is trenchless sewer repair worth it?
Usually, when a dig would destroy a driveway, mature landscaping, or hardscape - the restoration savings offset the higher per-foot price. Pipe-bursting handles collapsed lines; lining needs a structurally sound host pipe to work.
How do I know if my sewer line needs replacing?
A camera inspection is the definitive test (this calculator prices a before-and-after inspection at $200-$400). Recurring backups, multiple slow drains at once, sewage odors, or lush patches in the yard point to root intrusion, a belly, or a collapse in the lateral.
More questions
How do I know if my sewer line needs replacing?
Repeated backups, slow drains across all fixtures, sewage smell, mature trees over the line, soggy spots in the yard, or repeated camera-confirmed root intrusion. A camera inspection settles it.
Trenchless vs open-trench?
Trenchless saves landscape and hardscape but needs sound endpoints (lining) or a pullable alignment (bursting). Open-trench works on any soil/condition but tears up everything in its path.
Is sewer line replacement covered by insurance?
Most homeowner policies do NOT cover sewer-line replacement unless you carry a service-line endorsement. A few municipalities offer optional sewer-warranty programs.
What about tree roots?
Mechanical augering or hydro-jetting can clear roots short-term, but if the pipe is breached, replacement is the long-term fix. Trenchless lining encapsulates root entry points.
How long does the work take?
Open-trench residential lateral: 2-3 days. Pipe-burst: 1-2 days. CIPP lining: 1 day. Right-of-way work adds days for permitting.
