How we help: Foundation First TX is your foundation contractor. We'll review your request and call you about next steps and a quote.
Why San Antonio-area foundations move
The Balcones Escarpment crosses the north side of the San Antonio area. North and northwest of it, homes sit on thin soil over limestone, and some pockets of highly expansive clay are mixed in. South and east of downtown, and out along I-35 toward Schertz and Cibolo, the ground is deeper clay that swells and shrinks with moisture. Caliche layers and cut-and-fill lots are common in newer subdivisions.
Long hot summers and recurring drought pull moisture out of the soil around a house, and sudden storms put it back fast.
Common signs in San Antonio-area homes
- Cracks in stucco, stone, or brick near corners and openings
- Doors that drag or will not latch during dry months
- Slab-edge cracks and gaps where the soil has pulled back
- Uneven floors in older pier and beam homes near the urban core
- Drainage problems on sloped Hill Country lots
Slab and pier and beam homes
Newer neighborhoods across Bexar, Comal, and Guadalupe counties are mostly slab-on-grade. Older homes in established neighborhoods closer to downtown include more pier and beam houses. Both are inspected differently. See slab vs. pier and beam.
Foundation services available
Elevation readings and a written explanation of what the house is doing.
Pier-based repair for slab-on-grade homes, including post-tension slabs.
Shimming, pier and beam replacement, and crawlspace moisture fixes.
Lifting low areas back toward level where the structure allows it.
Grading, gutters, and drainage that keep soil moisture more even.
What changes the scope of a repair. Every quote follows an inspection.
Greater San Antonio cities
Older pier and beam homes downtown and newer slabs on clay and limestone.
A fast-growing city that sits right on the escarpment.
I-35 corridor neighborhoods on expansive clay.
Hill Country homes on limestone and sloped lots.
Newer slab subdivisions on deep clay northeast of San Antonio.
Also serving: Converse, Universal City, Live Oak, Selma, Helotes, Leon Valley, Alamo Heights, Bulverde, Seguin, and Garden Ridge.
What happens after you request an inspection
- We review your request. Your ZIP code, the signs you checked, and any notes tell us what to look at first.
- We call you. We confirm the details, answer first questions, and set up a time for an evaluation.
- The inspection. Elevation readings across the floors, a look at interior and exterior cracks, doors and windows, drainage and grading, and the crawlspace if the home is pier and beam.
- Written findings and quote. If repair is recommended, you get a written scope and quote to review. You decide what happens next.
Frequently asked questions
Is San Antonio clay as bad as Dallas or Houston clay?
Parts of the area have clay that is just as expansive, especially south and east of downtown and along I-35. Other areas are on limestone, where settlement and drainage are bigger concerns than swelling.
What is caliche, and does it matter?
Caliche is a hard, cemented layer common in South Texas soil. It can affect how piers are installed and how water drains around a home. The inspection notes what is found at your property.
Do drought restrictions affect foundation watering?
Watering rules can change during drought stages. Check your water utility's current rules before setting up a soaker hose around the foundation.
Will I get a written quote?
If repair is recommended after the inspection, you receive a written scope and quote to review. Nothing is decided until you choose.
How do I request an inspection in the San Antonio area?
Use the inspection request form or call (346) 679-7687.