Before a sewer replacement quote: the records and scope to compare

A recurring blockage does not tell you, by itself, how much pipe needs to be replaced. Before comparing sewer proposals, ask for evidence of the problem and a clear description of the proposed repair. The most useful quote starts with the same inspection information for every contractor.

If sewage is actively backing up, contact the appropriate local utility or service professional promptly. An online quote request does not provide emergency response, and you should not enter an excavation or open a sewer system to investigate it yourself.

Start with the problem, not a preferred method

Write down which fixtures are affected, whether the problem has happened before and what previous cleaning or repair achieved. Include the dates of any inspections and the location of known access points. These details help the contractor decide what investigation is appropriate; they do not establish the cause on their own.

Ask the provider to describe the suspected defect and where it is located. Seattle Public Utilities recommends obtaining that information in writing, including the distance along the line and a marked location where appropriate. Its guidance is a useful preparation checklist, while responsibility and requirements must still be confirmed with your own utility.

Request a usable copy of the inspection video

A camera inspection can help document pipe condition. However, Seattle's guidance notes that cameras cannot see through standing water in a blocked line. Ask whether clearing the blockage is needed before an inspection can provide useful evidence.

When an inspection is performed, request a copy of the video and the accompanying findings. Ask the contractor to explain the access point, the direction inspected and how identified defects correspond to the proposed work. Keep these records so another contractor can understand what has already been found.

Do not assume that a video alone proves every part of a pipe is suitable for a particular repair. Ask the professional to explain any remaining uncertainty or limitation.

Establish the section being quoted

The proposal should identify where the work starts and ends, what part of the system it addresses and why that scope is recommended. Clarify whether the contractor is proposing a localized repair, lining, pipe bursting or open-trench replacement.

Our trenchless and traditional replacement guide explains the broad distinctions. Ask each contractor why the proposed method suits the documented conditions rather than choosing it from a general advertisement.

If ownership is unclear, read who is responsible for the sewer lateral and confirm the boundary with your utility before commissioning work on a section that may be public or shared.

Compare the complete written scope

Ask every contractor to explain:

• the proposed repair limits and the inspection findings supporting them;
• cleaning, investigation and access work included before the repair;
• permits, utility coordination and inspections they will arrange;
• access needed through the yard, driveway or other property;
• how landscaping, paving and other disturbed surfaces will be restored;
• final testing, inspection records and video documentation included;
• exclusions, unresolved conditions and the process for approving changes.

Clarify who handles each item. If a separate trade or another property owner must participate, identify that dependency before scheduling the work. Ask about qualifications, insurance and the written warranty directly with the contractor.

Put approvals and handover in the plan

Permit and inspection requirements are local. Seattle, for example, distinguishes repair work from routine unclogging and requires inspection during the repair process. Your own authority determines what applies to your property. The permits and inspections guide suggests the questions to ask before work starts.

Use the project form to describe your location, symptoms and any inspection already completed. Request written proposals based on the same evidence, then discuss differences in scope with the professionals who respond.