St. Louis housing stock spans a century and a half, and a foundation question usually depends on which era you own. Below: what to expect from a stone basement, a poured wall, or a slab, and how to tell settlement from ordinary settling.
How do I know if I have a problem?
Doors that stick in one season and swing free in another, a crack that keeps reappearing after it is filled, floors that feel out of level near one wall — these are the things people notice first, and they are worth understanding before they are worth worrying about.
How do I know if my foundation problem is urgent?
Horizontal wall cracks, bowing you can sight along a wall, doors newly racking through a season, or any crack widening month over month — those get eyes soon. Hairline vertical cracks that hold steady are watch-list items. When in doubt, the evaluation is free and settles it with numbers.
What causes most foundation damage in St. Louis?
The shrink-swell cycle. Metro clay expands against basement walls in wet seasons and contracts away from footings in dry ones, so houses here are slowly squeezed and dropped in alternation. River-valley alluvium and south-county karst add their own chapters, and freeze-thaw winters compound all of it.
What will repairs cost me?
Crack injections from about $400; wall restraint $2,500-$10,000; interior drainage $2,500-$8,000; piering $1,200-$3,000 per pier with most underpinning jobs $4,000-$15,000. Missouri's overall structural-repair band runs $3,800-$12,500. The cost guide breaks down every factor.
What happens if I go ahead?
What actually happens once you say yes — timings, paperwork, and what carries over if you sell.
Do you work on both sides of the river?
Yes — the Missouri-side metro from Florissant to Oakville plus St. Charles County. Each community page describes its ground; the evaluation reads your specific lot.
Are your repairs warrantied?
Structural systems carry transferable written warranties — terms stated in the scope before you sign, because a warranty you learn about afterward isn't one.
Can I sell a house with a repaired foundation?
More easily than one with an unexplained crack. Metro inspectors and buyers know these soils; documented, warrantied repair reads as a solved problem. We provide the paperwork trail that makes it read that way.
Do you do commercial work?
Our focus is residential and light-commercial in scale. Larger structural work gets referred honestly.
How soon can someone come out?
Evaluations typically schedule within a few days, faster when something's actively moving. Call or send the form and we'll reply the same business day.
Still holding a question?
Send it over — same-business-day reply — or go straight to the free evaluation and get answers measured off your own walls.
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.