When trenchless methods may work
Pipe lining may work when the existing pipe can be cleaned and still has enough shape to hold the liner. Pipe bursting may work when a new pipe can be pulled through the old path.
These options can reduce digging, but the contractor still needs access points and a line that fits the method.
When excavation may still be required
Severe collapse, bad slope, major bellies, incorrect connections, or certain access problems may require excavation.
Ask the contractor to explain why trenchless is or is not suitable for your specific camera findings.
When to treat this as urgent
If sewage is coming up through a floor drain, shower, tub, or basement toilet, stop using water in the house and get help quickly. Do not run laundry, dishwashers, showers, or extra toilet flushes until the blockage is understood.
If only one sink or toilet is slow, the issue may be inside the home. If several fixtures are slow or the lowest drain backs up first, the main sewer line is more likely involved.
What to ask before approving work
Ask whether the contractor has camera evidence, where the defect is located, whether cleaning alone is enough, and whether repair or full replacement is being recommended.
For expensive work, ask for a written scope that explains access points, restoration, permits, expected timeline, warranty, and whether trenchless repair is possible.