Foundation repair in San Antonio, TX.

Seeing cracks, sticking doors, or sloping floors in a San Antonio home? You’re seeing the local ground at work — and here’s how we fix it for good.

What makes San Antonio unique

Texas's second-largest city grew up around the 1718 Alamo and the winding San Antonio River. That setting shapes how local foundations behave — and why a one-size repair doesn’t hold here.

Why slab foundations move in San Antonio

Deep Houston Black clay south of the Balcones Escarpment, with thin soils over Edwards limestone to the north. Surface patches ride that same moving ground, which is why they fail. Steel piers reach beneath it.

Common foundation problems we see in San Antonio

• Doors and windows that stick, drag, or won’t latch
• Stair-step cracks in exterior brick or block
• Sloping or bouncy floors and a slab that feels “off”
• Drywall cracks fanning from door and window corners
• Gaps opening between walls, trim, and the ceiling
• Cracks in the slab or at the garage floor

Why GroundLock uses steel piers

We drive galvanized steel piers through the active soil to load-bearing strata and transfer your home’s weight onto steel. Because pressed-concrete and hybrid piers often stop inside the moving zone, we install steel piers exclusively for San Antonio slab repair.

Our inspection & repair process

San Antonio neighborhoods we serve

Each San Antonio neighborhood has its own soil quirks — tap yours for local detail:

Nearby cities in Bexar County

Foundation services in San Antonio

More foundation services in San Antonio

San Antonio foundation FAQs