I have a house near Huebner and NW Military that has had piers put down some number of years ago. I don't know how long, the seller wouldn't say. 5 BR, 2800 sq ft. After I bought it, the door frames would shift over 1/4 inch seasonally. Walking through it is like riding a roller coaster.

Last June we decided to do something about it before a pipe broke or something. We went with chemical stabilization done by Land Stabilizers, (210)653-1787. It cost $4200.00. They inject something around the perifery of the house that causes the soil to stop expanding and contracting. It worked pretty well. We haven't had to adjust a striker plate since. There's a 10 year warranty. They ask you to do a hydrostatic test of the sewage lines before stabilization for the warranty to be effective. That's probably a good idea anyway. If you have a bad foundation problem, it may be do to a plumbing leak.

We did not do any leveling because, one, it's more expensive, and two, if they break a pipe during leveling, the expense to fix it is on you. Since we would have to lift part of the house 6 to 8 inches, we thought the risk of breaking a pipe was too great.

Good Luck,
Jack