Listicle · Updated Nov 5, 2026
7 signs you need foundation repair in San Antonio
San Antonio's clay soil expands when wet and shrinks when dry, and that shrink-swell is the primary reason for foundation issues in Bexar County (Texas Master Naturalist). These are the 7 signs worth taking seriously.
Diagonal cracks in walls or ceilings
Cracks running off the corners of doors and windows, or wider at one end, are a classic movement sign. Learn more →
Doors and windows that stick or won't latch
When the structure shifts, frames twist out of square. Learn more →
Sloping, bouncy or uneven floors
A marble that rolls on its own, or soft spots in a pier-and-beam home. Learn more →
Stair-step cracks in brick
Brick veneer and mortar often show movement before the interior does. Learn more →
Gaps at baseboards, trim or cabinets
New gaps where trim meets walls and floors, or cabinets pulling away. Learn more →
New cracks after drought or heavy rain
Clay soil swells when wet and shrinks when dry, so weather swings can show up in your walls. Learn more →
Soil pulling away from the slab, or water pooling
A gap between soil and slab in summer, or standing water by the foundation, points to moisture problems. Learn more →
Seeing two or more?
One sign can be cosmetic. Several together, or signs that keep getting worse, are a good reason to get a professional look. A free inspection tells you whether it's settling, drainage, or nothing to worry about. Curious about cost first? Try the cost calculator.
Quick self-check you can do today
- Photograph and date any cracks, and mark their ends with a pencil.
- Roll a marble on hard floors in a few rooms.
- Check that doors close and latch evenly.
- Walk the outside after rain and look for pooling near the foundation.
Want a real number for your home?
Calculators and guides give ranges. A free inspection from one vetted, independent local contractor gives you a written quote. No cost, no obligation.
Get my free inspection →Frequently asked questions
Are small wall cracks normal?
Hairline cracks can be normal shrinkage. Cracks that grow, run diagonally from door or window corners, or come back after patching are worth an inspection.
Does foundation movement get better on its own?
Movement on clay soil often changes with the seasons, but structural damage rarely fixes itself. Checking early gives you more options.
Keep reading
- Foundation repair cost in San Antonio: the 2026 guide
- Pier and beam vs slab foundation repair: cost, pros and cons
- Steel vs concrete piers: costs and trade-offs compared
- Foundation repair methods compared: what each costs and when it fits
- How to choose a foundation repair company in San Antonio: a checklist
- Foundation repair cost calculator
- House leveling and pier cost calculator
Sources cited on this page: Angi, How Much Does Foundation Repair Cost? (updated Oct 26, 2026); Angi, How Much Does Pier and Beam Foundation Repair Cost? (updated Sep 18, 2026); Texas Master Naturalist, Alamo Area Chapter: Bexar County Soils; Texas Dept. of Licensing & Regulation, Technical Bulletin IHB TB 10-01 (Foundations on Expansive Soils). Cost figures are national, not San Antonio quotes.
LevelSATX Foundation Network connects San Antonio homeowners with vetted, independent foundation repair contractors. We don't perform repairs; participating contractors pay us for referrals.