St. Louis Foundation Co. repairs the full failure chain St. Louis clay causes: settlement (piering from $1,200/pier), bowing walls (from $2,500), cracks (from $400), wet basements (from $2,500), and sunken concrete (from $500) — each with a free measured evaluation first.
Foundation Piering & Underpinning
Steel piers driven past the moving clay to load-bearing strata — the permanent fix for settlement.
Bowing Basement Wall Repair
Braces, anchors, and straightening for walls the clay is pushing in — the signature St. Louis failure.
Foundation Crack Repair
Injection, sealing, and reinforcement for cracks that leak or keep widening.
Basement Waterproofing
Interior drainage, sump systems, and grading correction that take the water pressure off the walls.
Concrete Leveling
Lifting sunken driveways, patios, garage floors, and walks back to grade — without replacement.
Cost Guide: What Repairs Run in St. Louis
Every repair class priced for this metro, the four factors that move a quote, and how to compare bids.
Why the services come as a set
The metro's shrink-swell clay doesn't specialize. The same saturation that bows a basement wall leaks through its cracks, floats the patio slab, and — come drought — settles the footing it spent spring pushing. Companies organized around one product sell that product; we're organized around the clay, which is why an evaluation here reads the whole chain and the scope only includes the links your house actually needs.
Service questions
Which service do I actually need?
Usually the evaluation answers that in an hour. Cracks alone often mean injection; anything horizontal or bowing means wall restraint; doors racking with sloped floors points at piering; water drives half of it. The evaluation is free precisely so the diagnosis doesn't depend on what we'd like to sell.
Do you charge for evaluations?
No. Photos, crack measurements, laser floor levels, and a written scope with fixed prices — free across all ten communities we serve. Monitoring advice is free too, when that's the honest call.
Can one crew handle structure and water together?
That's the point of the stack. Piering, wall restraint, crack work, drainage, and slab leveling are one clay problem wearing five costumes — scoping them together is how the fix holds and how you avoid paying two mobilizations.
Get a free St. Louis foundation evaluation
Tell us what the house is doing — cracks, bowing, sticking doors, sloping floors — and we'll schedule an evaluation with photos and crack measurements. We reply the same business day.