Sinking Foundation Repair in San Antonio, TX.
Sinking Foundation Repair for San Antonio property owners — engineer-backed, driven to load-bearing strata, and warrantied for life. Deep Houston Black clay south of the Balcones Escarpment, with thin soils over Edwards limestone to the north.
Looking for sinking foundation repair in San Antonio? Here’s why local slabs move — and exactly how we fix them.
Common foundation problems in San Antonio
Across San Antonio, the calls we get most involve a visibly low corner, a floor that pitches to one side, and doors racked out of square. They almost always trace back to the ground beneath the slab.
- Doors and windows that stick, drag, or won’t latch
- Stair-step cracks in exterior brick or block
- Sloping, bouncy, or visibly uneven floors
- 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 slab foundations move in San Antonio
Deep Houston Black clay south of the Balcones Escarpment, with thin soils over Edwards limestone to the north. When that ground cycles between wet and dry, a slab cast on it moves too — and surface patches move right along with it.
Why GroundLock uses steel piers
A sinking foundation is settlement you can see and feel. Steel piers driven to refusal beneath the sinking area transfer the load to stable ground and let us lift it back toward level before the damage compounds.
Signs you may need sinking foundation repair
In San Antonio, watch for a visibly low corner, a floor that pitches to one side, and doors racked out of square. If you’re seeing them, a free elevation survey will tell you how far the slab has actually moved.
Our inspection & elevation survey
Every San Antonio project starts with a free, no-obligation elevation survey. We map your slab to ±⅛ inch, identify the high and low points, and walk you through a written, engineer-backed report.
The sinking foundation repair process
Free elevation survey
We map your San Antonio slab to ±⅛ in and show the movement in writing.
Engineered pier plan
Pier count and spacing set to a structural spec for your home.
Drive, lift & lock
Steel piers driven to refusal; slab raised and load transferred onto steel.
Re-survey & warranty
Final elevation documented and warrantied for life before we leave.
Drainage, grading & moisture control
Because water drives the soil movement under San Antonio slabs, lasting results often pair the repair with drainage correction and erosion control — recommended only where it protects your foundation.
Nearby areas served
We provide sinking foundation repair across San Antonio and the surrounding Bexar County communities.
Sinking Foundation Repair in nearby Bexar County cities
Warranty & financing
- Lifetime transferable warranty on steel-pier stabilization — it passes to the next owner.
- Financing from $0 down on approved credit.
- Engineer-backed documentation lenders, buyers, and insurers accept.
San Antonio sinking foundation repair FAQs
How much does sinking foundation repair cost in San Antonio?
Do you provide sinking foundation repair in my San Antonio area?
Why steel piers for San Antonio foundations?
Book your free
foundation inspection.
Tell us where you are and what you’re seeing. A GroundLock structural advisor confirms within one business hour.
Get your free foundation inspection.
A licensed inspector measures your slab elevation to ±⅛ in and gives you a written, engineer-backed plan — with zero pressure.