Foundation Leveling in San Marcos, TX.

Looking for foundation leveling in San Marcos? Here’s why local slabs move — and exactly how we fix them.

Common foundation problems in San Marcos

Across San Marcos, the calls we get most involve a floor that visibly slopes, doors out of square, and cracks that widen across a room. 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 Marcos

Blackland clay east of I-35, right over the Balcones Fault — highly active heave. 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

Foundation leveling is precise elevation correction: we map the slab to ±⅛ inch, set the target elevation, and recover it on steel piers driven to stable strata — then re-survey to prove the result.

Signs you may need foundation leveling

In San Marcos, watch for a floor that visibly slopes, doors out of square, and cracks that widen across a room. 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 Marcos 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 foundation leveling process

Drainage, grading & moisture control

Because water drives the soil movement under San Marcos 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 foundation leveling across San Marcos and the surrounding Hays County communities.

Foundation Leveling in nearby Hays 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 Marcos foundation leveling FAQs