If you are having problems with your sewer and a replacement for it is the only option, then you need to have a professional plumber come by and do the work for you. It’s especially important to get professional plumbing services in southern California, as a lot of homes are close to each other and attempting to do the sewer replacement on your own could end up being a disaster. There is a lot of work involved with doing this, and if just one thing goes wrong you could end up spending a lot more than it would have cost to just call a professional in the first place.
While you might not want to deal with the extra expense of hiring a plumber, it’s going to be an investment that is well worth it. Their expertise with doing replacements of sewers will be very much used, and will result in having a working sewer that does what you need it to.