Trenchless Sewer Repair Candidacy Checker — Lining, Bursting, or Dig?
Trenchless repair can avoid the $1,500–$4,000 of surface restoration that excavation requires — but not every sewer line qualifies. A collapsed or badly bellied pipe can't be lined, bursting needs a traceable path and two access pits, and over open lawn a plain dig is sometimes still the cheapest fix.
Answer a few questions about what's wrong with the pipe and how a crew could reach it. If nobody has run a camera yet, say so — the honest answer starts there.
For example: a cracked pipe that still holds its shape, running under a driveway with a reachable cleanout, comes out as a strong CIPP lining candidate at $80–$250 per foot, with full runs commonly $6,500–$12,000.
How this works
The candidacy rules in this checker are the same ones trenchless crews apply on site. CIPP lining cures a new pipe inside the old one, so it requires a structurally intact host: cracks, root intrusion, and corrosion are fine, but a collapse blocks the liner and a belly or back-slope simply gets lined into place — the sag stays. Pipe bursting fractures the old pipe outward while pulling new HDPE through, so it tolerates far worse pipe but needs a traceable, not-fully-collapsed path and two access pits. When neither condition holds, or the line is shallow under open lawn where digging is cheap, open trench is the honest recommendation.
Cost figures come from 2026 pricing published by Angi, HomeGuide, and HomeAdvisor: CIPP lining $80–$250/LF ($125–$200 typical; full runs $6,500–$12,000), pipe bursting $60–$200/LF (some markets $150–$300; full jobs $8,000–$15,000), and open trench $50–$250/LF all-in plus restoration. On complete jobs, lining runs roughly 15–20% cheaper than bursting (the full-job ranges above), even though the per-foot ranges overlap; the cured liner is rated for about 50 years, and bursting's new HDPE for about 100. Trenchless's advantage over excavation is the $1,500–$4,000 in surface restoration a trench requires; per-foot alone, trenchless often costs more, so it only wins where there's real restoration to avoid.
This quiz screens; it doesn't certify. Candidacy ultimately depends on what a camera finds — material, diameter, slope, and failure points — which is why two of the paths above end at "get a camera inspection" rather than a method. We connect you with independent local sewer and trenchless pros; we don't perform repairs ourselves.
Estimates only — independent local providers quote their own pricing. Data last reviewed 2026-10.
Sources
- HomeGuide — Sewer Line Replacement & Repair Cost (third-party estimate)
- HomeAdvisor — Sewer Main Installation & Replacement Costs (third-party estimate)
Frequently Asked Questions
What disqualifies a sewer line from trenchless repair?
For CIPP lining: a collapsed section, a significant belly (sag), or bad slope — the liner needs a structurally intact host pipe and can't fix geometry. For pipe bursting: a path that's fully collapsed or can't be traced, or no room for the two access pits. A camera inspection ($125–$500) is the only way to check any of these.
Is pipe lining or pipe bursting cheaper?
Lining, usually, on the complete job: full lining runs commonly cost $6,500–$12,000 against $8,000–$15,000 for bursting, about 15–20% less, and with a good cleanout lining may need no digging at all. Per foot the published ranges overlap: lining $80–$250/LF ($125–$200 typical) and bursting $60–$200/LF plus two access pits. Bursting earns its premium when the pipe is too deteriorated to line, and its new HDPE pipe is rated for roughly 100 years versus about 50 for a cured liner.
How much does trenchless sewer repair save versus digging?
Mainly the $1,500–$4,000 of surface restoration a trench would need, so it only pays off where there's real restoration to avoid: driveways, patios, slabs, mature landscaping. Per foot, trenchless often costs more than trenching. Over open lawn with a shallow line, an open trench can genuinely be the cheaper option, which is why this checker sometimes recommends it.
Can a bellied sewer line be fixed with CIPP lining?
No. A liner takes the exact shape of the pipe it cures inside, so lining a belly produces a smooth-walled belly that still ponds waste. Bellied sections have to be re-laid at correct slope — by excavation, or in some cases pipe bursting can pull a new line through if the sag isn't severe. Anyone quoting a liner for a documented belly without addressing the slope deserves a second opinion.
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Use the free tool →Rather skip straight to quotes?
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