Evaluate the pipe before choosing a method
Ask for the inspection findings behind the repair recommendation. The existing local guidance lists trenchless lining and bursting alongside spot repairs and full cast iron replacement, rather than treating one method as the answer to every failure.
Ask what parts of the system the proposal covers, what access is needed and what disruption or restoration work remains. Avoid assuming ‘trenchless’ means no access work at all.
Compare the full repair scope
Request written proposals that describe the affected line, recommended method, preparation and restoration. Ask about exclusions, permits where applicable and warranty terms rather than comparing only a per-foot figure.
Clearing roots or buildup can address an obstruction, but ask whether damaged joints or deteriorated sections also require repair. A camera inspection helps inform that discussion.
Trenchless and replacement estimates
The site’s typical 2026 estimate for trenchless lining or bursting is $90–$250 per linear foot. Spot repairs are estimated at $1,500–$4,500; full cast iron replacement under a slab at $8,000–$25,000+.
These categories cover different scopes and are not interchangeable quotes. Ask the contractor to explain the total project price and why the proposed approach fits your property.
Compare drain & sewer cost estimates and homeowner FAQs.