Living in the South Bay means your house is built on sand!
If you live in Redondo Beach, Hermosa or Manhattan Beach,CA; the closer your house is to the water, the greater the sand content of the soil. That means you house may have suffered some sagging and shifting. If the years have taken their toll on your homes foundation, get ready because the repairs can be costly. Are you are planning on installing ceramic tile?...You MUST stabilize the subfloor. If you don't, the tile grout will crack almost immediately. If you lack the funds, install carpet or laminate flooring.
To install masonry, you can level the floor by using a dry pack
New home shoppers, STAY away from houses with extensive damage to the foundation. True cost for retrofitting can be hard to pin down.
There are plenty of homes that don’t have those issues. Don’t let your foundation costs crush your wallet.