How to choose a foundation repair company in Missouri
A crack in a basement wall or water on the floor after a storm is stressful, and the first company you call may not be the right one. Some of the companies listed here mostly keep water out. Others mostly fix walls and foundations that have moved. Many do both. This guide covers what to look for before you sign anything.
Know which problem you have
Water coming in is usually a waterproofing job: drain tile, a sump pump, sealing cracks or encapsulating a crawl space. Walls that bow, floors that sag or doors that stick point to a structural problem that calls for wall anchors, braces or piers. A good company will tell you which one you have after an inspection, and many listed here say they offer that inspection for free.
Start outside. The Missouri Department of Natural Resources says most basement water problems come from surface drainage and how the basement was built, not from groundwater. Gutters and downspouts should carry roof water away from the walls, and the ground should slope away from the house. University of Missouri Extension notes that small cracks get found by water and grow, and that older houses are most at risk as foundations settle. Rain matters too. Average yearly rain runs from about 35 inches in the northwest of the state to 55 inches in the southeast, and 2-inch downpours have come more often since 2005.
Ask about licenses
Many Missouri cities license contractors locally. Springfield tells residents to check that a contractor holds the required city license, insurance and bonding. Columbia's permitting guide says a contractor needs a city contractor license before a building permit is issued. Ask every company which local license it holds and check it with your city. The listings on this site show whether a company states a license on its own website. This site does not check licenses.
Ask about permits and digging
Permit rules depend on where you live. The City of St. Louis, for example, requires a residential building permit for foundation and footing repair, underpinning or shoring. Ask the company who pulls the permit, and call your city's building department if you are not sure. If the job means digging outside, such as exterior waterproofing or drain tile, Missouri law requires notice to Missouri One Call at least two working days, and no more than ten, before digging starts. Call 811.
How to read a listing
Each listing shows the services a company names on its own website: foundation repair, basement waterproofing, bowing wall repair, piers, crack repair, crawl space work, sump pumps, drain tile, concrete lifting and egress windows. It also shows whether the company mentions a free inspection, financing, a license or a warranty. A service under "No information yet" means the company's site does not say. It does not mean the company does not offer it. Call and ask.
What to ask on the first call
Ask what they think is causing the problem and how they know. Ask what the warranty covers, whether it is in writing, and whether it transfers if you sell the house. Ask who does the work, their own crew or a subcontractor. Get at least two written estimates that describe the same scope of work, so you can compare them line by line.
Sources: Missouri One Call law, RSMo 319.026; City of St. Louis residential permit criteria; Springfield Confirm Your Contractor's License; Columbia permitting guide; Missouri DNR Basement and Yard Water Problems; University of Missouri Extension; NOAA NCICS Missouri State Climate Summary. Checked October 7, 2026.