If you have been quoted for a sewer replacement that involves trenching your garden, it is worth asking whether the pipe can be lined instead.
Digging here is genuinely difficult
Soft, wet ground and a high water table make open trenching harder and messier on James Island than in most places. A trench in saturated soil needs shoring, and putting the ground back properly afterwards is its own job. Lining avoids all of that by working through access points that already exist.
The oaks people want to keep
Riverland Terrace and the older streets have beautiful mature oaks whose roots spread far wider than the branches. Trenching near one risks the tree as well as the budget.
It fixes the root problem properly
Roots get in at the joints between old pipe sections. A liner has no joints, so this stops the cycle rather than delaying it.
When it will not work
If a pipe has collapsed, or sagged so badly it holds water, there is nothing sound left to line against. We would rather explain that after looking than start something that cannot succeed.