Every house in Houston moves a little. Expansive clay soil swells when it rains and shrinks when it bakes, and the structure sitting on top of it goes along for the ride. The question is not whether your house has moved — it is whether it has moved enough to matter.
Here are the signs we look for on every foundation inspection.
1. Doors that stick or swing on their own
A door that suddenly binds at the top corner, or one that drifts open when you leave it half-closed, is telling you the frame is out of square. One door could be humidity. Three doors on the same side of the house is movement.
2. Floors that slope or bounce
Set a marble on the floor in a few rooms. If it consistently rolls the same direction, you have a slope. On pier & beam homes, a bouncy or spongy spot usually means a failed pier, a rotted sill, or a beam that has lost its bearing.
3. Stair-step cracks in brick
Cracks that follow the mortar joints in a staircase pattern — especially near corners and above windows — are classic differential settlement. A crack wider than about a quarter inch deserves a professional look.
4. Gaps at baseboards and crown molding
When the floor drops away from the wall, the baseboard goes with it and a gap opens at the top. Crown molding separating from the ceiling is the same story at the other end.
5. Cracks above door frames and windows
Drywall cracks running diagonally from the upper corner of a door or window opening are where racking stress concentrates. Repainting them never lasts if the movement continues.
6. Separating exterior trim and a gap at the garage door
Look at where the fascia meets the corner boards, and look at the daylight gap under a closed garage door. An uneven gap across that opening is a very visible slope.
7. Plumbing that changed behavior
Slow drains, a water bill that climbed for no reason, or damp spots on the slab can point to a leaking line under the foundation — which is both a cause and a consequence of movement.
What to do next
Get an elevation survey before you get a quote. A zip-level reading across the whole floor plan turns "it feels off" into actual numbers, and those numbers are what a real repair plan is built from. If the movement is minor, the right answer might be drainage corrections and monitoring rather than piers — and any honest contractor should be willing to tell you that.
