It’s quite common for all homes to have some foundation work because of clay soil.

Houston has zero basements due to the clay in the soil and Ohio almost always has basements for SFRs.

Clay,Take a big breath.

@Clay GradisThanks for the advice! 

I got a plumbing company to come snake it out and they did a camera view and saw that the connection from PVC to the City Drain has a short clay pipe still there...thus with the ground shifting the PVC no longer drains clear to the City Drain.

In Milwaukee, where much of the city was built on clay and most houses need (or will need) foundation repair, it's actually a selling feature when foundation work was done by a qualified contractor (it means the buyer won't have to worry about it in the future).

He explained how with proper maintenance a tile roof in Cali can last hundreds of years and there are clay layed aquaducts still working over 2000 years old.

I had shot shot a very limited amount of clays years ago.

Originally posted by @Clay PowellThanks for the input Clay!

So far I have read FLIP by Rick villani and clay Davis, great book!