Scope discipline
The most expensive sewer job is the one that was scoped wrong
There are two ways to get a sewer repair badly wrong, and they cost about the same. The first is replacing a whole lateral because of a single cracked section that a spot repair would have fixed for a fraction of it. The second is spot-repairing one defect in a pipe that has failed generally, then doing it again eighteen months later a few feet further along, twice more after that, and eventually replacing the line anyway with the earlier repairs written off.
Both mistakes come from the same place: deciding the scope before looking inside the pipe. So the sequence here is fixed. The line gets filmed, defects get located and marked with depths, and the recommendation follows from what is on screen, which you watch too. If the footage shows sound pipe with one break at eleven feet, that is what gets quoted. If it shows root intrusion at most joints, a belly, and cast iron with the wall gone thin, the honest answer is replacement and the reasoning is visible.
Location accuracy is the other cost lever. A transmitter in the camera head and a surface locator put a defect within about a foot, which turns excavation from an exploratory dig into a short trench in a known place. On a driveway or a finished yard that difference is most of the restoration bill.
Everything above ground gets discussed before anything below it is touched: what comes up, what goes back, who restores it, and what the permit and inspection sequence looks like. Surface restoration is the part of a sewer job that surprises people, and it should not be the part they find out about last.
Talk Through a Sewer Quote
Have camera footage from another company? Bring it. A second opinion on existing footage is a reasonable thing to ask for.