Serving Hamilton, Butler, Warren & Clermont County

Foundation repair and basement waterproofing in Cincinnati, OH

Stealth Foundation repairs foundations and waterproofs basements across Greater Cincinnati, where clay soil, hilly terrain, and aging block foundations put steady pressure on homes. From Hyde Park and West Chester to Mason and Milford, we are the local team homeowners call when a wall bows, a basement floods, or a foundation settles. Family-owned since 2010, backed by a lifetime transferable warranty on every installation.

Schedule your free inspection Call (513) 489-0332

Our services

Foundation repair and basement waterproofing services in Cincinnati, OH

Residential foundation repair

  • Helical pier foundation repair

    For sinking or settling foundations. Steel pier shafts are driven through Cincinnati's clay layer to stable, load-bearing soil below, permanently stopping foundation movement. The right solution when your foundation is sinking or has settled unevenly.

  • I-beam wall stabilization

    For bowed or leaning basement walls. The pre-engineered I-beam system designed by Steve Cohen anchors to the floor and ceiling framing, resisting the lateral soil pressure driving the wall inward. Designed to stop movement and allow for gradual correction over time.

  • Carbon fiber wall straps

    For mild to moderate wall bowing where displacement is less than two inches. High-tensile carbon fiber straps are bonded to the wall surface and anchored at floor and ceiling, with no excavation, typically completed in a single day.

Basement waterproofing

  • Interior waterproofing

    A perimeter drainage system installed from inside the basement captures water at the point it enters and routes it to a sump pit before it spreads across the floor. No exterior excavation required. Typically completed in one to two days.

  • Exterior waterproofing

    A membrane barrier and drainage system applied to the outside of the foundation wall stops water before it contacts the concrete. The most comprehensive waterproofing solution for Cincinnati homes where exterior drainage is the right approach.

  • Sump pump installation

    New installations, replacements, and battery backup additions. Properly sized for your basement and for the water volumes Cincinnati's spring storm season produces, including battery backup for the power outages that accompany the region's heaviest rain events.

Cincinnati communities we serve

Stealth Foundation serves homeowners throughout Cincinnati and the surrounding metro, from established city neighborhoods to suburban communities across Hamilton, Butler, Warren, and Clermont counties. Not sure if we reach your address? Call (513) 489-0332 and we'll confirm before your inspection.

Hamilton County

Blue Ash, Madeira, Montgomery, Indian Hill, Sharonville, Evendale, Glendale, Wyoming, Reading, Springdale, Forest Park, and Finneytown.

Butler, Warren & Clermont

West Chester, Liberty Township, Fairfield, Mason, Loveland, Milford, and Batavia.

City of Cincinnati

Hyde Park, Mt. Lookout, Anderson Township, Mariemont, Oakley, Kenwood, Clifton, Westwood, Mt. Washington, and Norwood.

Why this market is different

Why Cincinnati foundations fail, and what makes this market different

Foundation and waterproofing problems in Cincinnati are not random. The specific combination of soil, terrain, rainfall, and housing age in Greater Cincinnati creates conditions that are more demanding on foundations than most regions in the country. Here is what drives the majority of the problems we see.

Cincinnati's expansive clay soil

Hamilton County sits on some of the most foundation-aggressive clay in the region. It swells when wet and shrinks when dry, a push-pull cycle that works against your walls and footings with every rain and dry spell. It's the root cause of most foundation movement and basement water we address here, and it doesn't stabilize on its own.

Hilly terrain and drainage challenges

Cincinnati's famous hills have real consequences below grade. Hillside lots funnel water toward lower foundations and valley lots collect it, creating chronic hydrostatic pressure that flat-terrain homes never face. The Mill Creek watershed and the east-side hillside neighborhoods make the moisture environment tougher than rainfall totals alone suggest.

More than 40 inches of annual rainfall

Cincinnati exceeds the national average for precipitation, topping 40 inches in a typical year. That keeps the clay around your foundation in near-constant moisture cycling. Spring, March through May, is the hardest stretch, arriving when the soil is already saturated and the water table is high.

Historic housing stock

Hyde Park, Mt. Lookout, Clifton, Westwood, and Mariemont hold thousands of homes built in the early to mid-1900s. Many are concrete block or stone, built to the standards of their era, and have fought clay movement for 80 to 100 years. Decades of seasonal pressure and freeze-thaw cycling show up in these foundations today.

Suburban growth on variable soil

Mason, West Chester, and much of Warren and Clermont County grew fast on graded lots and fill soil that's still settling. Homes here can see foundation settlement in the 5-to-15-year range as fill compacts, earlier than owners expect. The cause differs from older-neighborhood clay movement, but the fix, helical pier stabilization, is often the same.

Freeze and thaw cycles through Cincinnati winters

Cincinnati winters deliver enough freeze-thaw swings to widen cracks and push soil against foundation walls each season. Water seeps into small cracks, freezes, expands, and widens them a little more; the next freeze repeats it. Over many winters, those small gaps become real water entry points in older walls.

Don't wait on these

Signs you should call today

The following signs are not cosmetic issues, and they do not resolve on their own and will only get worse. Call us to schedule a free owner inspection, and Steve or David Cohen will tell you exactly what is happening and what it will take to fix it.

Call us at (513) 489-0332

  • A horizontal crack running across the middle of a basement wall, which is structural, not cosmetic.
  • Stair-step cracking in block wall mortar joints.
  • Floors sloping or a noticeable drift toward one side of a room.
  • Doors or windows that stick now, but closed easily a season ago.
  • Water on the basement floor after any rain, not just heavy rain.
  • White chalky deposits spreading across multiple walls.
  • Any crack that has been growing since you first noticed it.

Who you're working with in Cincinnati

61 combined years in Hamilton County's clay soil

Foundation repair and basement waterproofing are diagnostic trades. The right repair depends on knowing how local ground behaves, the variable that off-the-shelf franchise manuals miss. Cincinnati's expansive clay swells and shrinks by season, and its hillside drainage drives water toward foundations flat-terrain homes never deal with. Steve and David have worked in this exact soil their entire careers. When you call, an owner performs the inspection personally, not a commissioned salesperson.

Steve Cohen — Owner & Founder

Steve founded Stealth Foundation in 2010 and has 38 years of foundation repair and basement waterproofing experience across Greater Cincinnati and Northern Kentucky. He designed the pre-engineered I-beam stabilization system the company uses for bowed and leaning basement walls. Steve performs owner inspections personally.

David Cohen — Owner

David has 23 years of foundation repair and basement waterproofing experience in the same region. He performs owner inspections and oversees structural work on the job site alongside his father. The person who inspects your home is the person who does the work.

Frequently asked questions

Yes. Stealth Foundation serves homeowners throughout Cincinnati and the surrounding metro, including Hyde Park, Mt. Lookout, Anderson Township, Mariemont, Oakley, Kenwood, Clifton, Westwood, Norwood, Blue Ash, Madeira, Montgomery, Indian Hill, Mason, West Chester, Milford, Batavia, and Loveland. We cover Hamilton, Warren, and Clermont Counties. Call (513) 489-0332 to confirm service availability at your specific address.

The most common problems we see in Cincinnati are sinking or settling foundations caused by the expansion and contraction of Hamilton County's clay-heavy soil, bowed or leaning basement walls driven by hydrostatic pressure from water-saturated soil, wet or leaking basements where water enters through the cove joint or foundation cracks, and foundation cracks that develop from settlement and widen with each freeze and thaw cycle. Historic homes in Hyde Park, Mt. Lookout, Clifton, and Mariemont frequently have block or stone foundations that have been managing Cincinnati's soil conditions for 80 to 100 years or more. Newer homes in Mason, West Chester, and Clermont County can experience early settlement as fill soil compacts in the years after construction.

Hamilton County's expansive clay soil is one of the primary drivers of foundation problems throughout Greater Cincinnati. Clay absorbs water and expands significantly when wet, then contracts as it dries. That cycle repeats with every rainfall and dry period, every season, every year, creating continuous lateral pressure against basement walls and vertical stress on foundation footings. With Cincinnati averaging over 40 inches of rainfall annually, the clay surrounding most foundations spends a significant portion of the year in an expanded, pressurized state. Combined with Cincinnati's hilly terrain, which concentrates runoff against hillside and valley foundations, the soil conditions across Greater Cincinnati are among the more demanding in residential construction.

Yes. Stealth Foundation offers free inspections for homeowners throughout Cincinnati and the surrounding metro. We come to your home, examine the foundation or basement, and explain what we find in plain language. If a repair is needed, we walk you through what it involves, what it will cost, and what the warranty covers. If the situation does not require immediate action, we tell you that instead. Call (513) 489-0332 or use the contact form to schedule. No obligation.

Costs vary based on the problem type, severity, and the appropriate repair method for your specific situation. Helical pier installations for sinking foundations typically range from $5,000 to $15,000 depending on the number of piers and depth required. Bowed wall repairs range from $3,500 to $15,000 depending on severity and method. Interior waterproofing systems typically fall between $3,500 and $10,000. Exterior waterproofing, which requires full perimeter excavation, generally starts at $8,000 and increases with the length of wall and depth of excavation. Every estimate is based on a free inspection specific to your home. There is no reliable way to price foundation or waterproofing work without seeing the problem in person.

Yes. Stealth Foundation serves the full Greater Cincinnati metro, not just the city limits. Our service area includes communities throughout Hamilton County, including Anderson Township, Blue Ash, Madeira, Montgomery, Indian Hill, Norwood, Mariemont, Sharonville, Wyoming, and Evendale, as well as Warren County communities including Mason, West Chester, and Loveland, and Clermont County communities including Milford and Batavia. We serve homeowners across Northern Kentucky as well, through our Independence, KY location. Call (513) 489-0332 to confirm service at your address.

Free foundation inspection

Schedule your free owner inspection in Cincinnati

Stealth Foundation serves homeowners across Cincinnati and the surrounding metro, from Hyde Park and Anderson Township to Mason, West Chester, and beyond. Whether you are dealing with foundation movement, a wet basement, or you just want to know where things stand, a free inspection is the right first step. Straight answers, no obligation, with every repair backed by a lifetime transferable warranty.

Call us today at (513) 489-0332

We serve Northern Kentucky as well, through our Independence, KY location. Click here to learn more.

Schedule Your Free Inspection

We will reach out within one business day to schedule your free inspection & written estimate.