Sewer problems in Goose Creek are usually about the ground rather than the pipe, which is good news — it often means a smaller repair.
Settling rather than roots
In most places the first suspicion is tree roots. Here the pipe is generally modern PVC and sound, so what tends to happen instead is that the ground settles under a section and it sags. Water then sits in that dip and starts collecting waste. That is a repair to one part of the line, not the whole thing.
Older parts of town
Nearer the original center of Goose Creek there are older lines where roots and joints do come into it, and those are a different repair. Which one you have is not something anyone can tell from your driveway.
Knowing who is responsible
The line from your house to the connection is yours to look after; the main is the utility’s. Which utility serves you depends on your address here, and it decides who pays for what. We establish that before starting rather than after.
Ask to see the footage
Roots, a sagging section, a crack and a collapse cost very different amounts to put right. You should be able to see the problem you are paying to solve.