If you have a large crack in the tile and slab in your house as shown in this photo your house might be already sliding down the hill, call OC Structure Check for a Structural Engineering evaluation.
Jeremy Livermore, S.E., P.E.
Structural Engineer, License #: S5905
Civil Engineer, License #: C71491
OC Structure Check
1133 Camelback St.
Newport Beach, CA 92658