This was a big project. Our sewer backed up almost 2 years ago and flooded our lower level. Had to renovate down stairs. We thought we had the clog snaked out but a few weeks ago it backed up again and found out it was a clog that they could not get out.
We had it located and got a few quotes that ranged from 6-7k. My dad I decided we would rent an excavator and tackles the project.
It was quite a journey but it is complete and we only spent $900 for rental and supplies.
Edit: I realize I will get a lot of hate for not shoring the trench