Foundation Repair in Lee's Summit, MO
Most houses here are younger than the clay under them is forgiving. About four in ten Lee’s Summit homes went up in the 1990s and 2000s, and many are now old enough to show what years of wet springs and dry summers do to a basement. If you’ve spotted a new crack, a door that sticks every August, or water at the base of a wall after a long rain, we can tell you what’s moving and why. Olson has handled foundation repair in Lee’s Summit, MO, and the person who inspects your home has installed this work himself.
Why Foundations Move Around Here
Your foundation sits on clay that changes size with the weather, on hilly ground, with water that hangs close to the surface for half the year. Each of those pushes on a basement in its own way.
Clay That Swells, With Water Just Below the Lawn
City soil maps show swelling Arisburg and Sampsel clays across much of town, holding water within 18 to 30 inches of the surface from late fall into spring. Below sits soft shale; geologists even named a local layer the Lees Summit Formation.
- Wet clay swells and pushes basement walls inward.
- Dry clay shrinks and lets part of the house settle.
- The fix covers both: piers reach past the moving clay, and bracing holds walls against it.
Hills, Walkouts and Fill Lots
Rolling ground in Raintree Lake, Lakewood and Winterset means lots of walkout basements, with one side holding back far more soil and water than the other.
Cut-and-fill lots add to it, since fill settles differently than native clay. That’s why we often find one bowed wall or one dropped corner while the rest of the house is fine.
Drought Years, Then a Wet May
The 2022 to 2023 drought, including Missouri’s seventh driest growing season since 1895, shrank clay away from footings across the metro.
Then the rain returns. May averages over 5 inches, July 2024 storms flooded local window wells, and freeze-thaw cycles run from mid-October to mid-April.
Drainage Checks You Can Do This Weekend
A lot of basement water starts outside. Check these first:
- Downspouts discharge 5 to 10 feet from the house, not at the corner.
- Soil falls about 6 inches over the first 10 feet away from the walls.
- Window wells are clear and covered.
- Your sump pump runs and drains into the yard.
- Big trees sit at least 20 feet from the house, or have a root barrier 3 to 4 feet deep.
- In a dry summer, water along the foundation twice a week, about 20 minutes per side, so the clay doesn’t pull away from the footing.
Report street flooding to Lee’s Summit Public Works. For problems on your own lot, see our drainage solutions.
When a Crack Is Worth a Call
- Cracks wider than about 1/8 inch, or ones that keep growing
- Floors that drop more than 1 inch over 10 feet
- Horizontal or stair-step cracks in a basement wall
Not sure? Pencil-mark both ends of the crack and check again in 30 days. Our guide on how to monitor your foundation walks you through it.
What We Find in Homes Here, Era by Era
The age of your house tells us a lot before we even walk downstairs. Here’s what tends to show up in each part of town.
Older Homes Near Downtown
The streets around Green, Douglas and Third hold homes from the late 1800s through the 1940s, some with stone or rubble basement walls. Mortar between the stones washes out over a century of wet clay.
- Common signs: sandy mortar, loose stones, damp walls, a wall leaning in at the top
- Usual fix: repointing, rebuilding a failed section, then bracing if the wall is still moving
1970s and 1980s Homes
The early streets of Lakewood and the east side of Raintree Lake date to this boom. We often find concrete block basements in homes from this era, and block shows clay pressure in a very readable way.
- Common signs: a horizontal crack along one mortar joint, stair-step cracks near corners, a wall that bows in at mid-height
- Usual fix: steel I-beam bracing or anchors, plus water control if the crack is wet
1990s and 2000s Homes
This is the biggest slice of the city, from Winterset to the west side of Raintree Lake to Woodland Shores. Most have poured concrete walls, many with walkouts.
- Common signs: vertical cracks that weep after rain, a settling corner on a filled lot, a garage slab or front stoop that has dropped
- Usual fix: crack injection for leaks, concentric piers where a corner has settled
Builder warranties on these homes have long since run out, so the repair is on you. The good news is that many problems in this age range are local and fixable without touching the rest of the house.
Newer Construction
In newer areas like Stoney Creek and New Longview, early cracks are often normal concrete shrinkage. Sometimes they’re not; local news has covered a newer Lee’s Summit home where the original piers weren’t drilled deep enough.
If your home is still under a builder warranty, an independent inspection before the deadline gives you something in writing either way.
House Foundation Repair Options That Match the Problem
The right repair depends on which way your foundation is moving: down, in, or letting water through. Here’s what each fix does and when it makes sense.
Concentric Steel Piers for a Settling Foundation
When a corner or wall has dropped, piers carry the weight of the house past the clay that keeps changing and down to stable ground.
- What we install: high-carbon tubular steel in 5-foot sections joined with 12-inch inserts, set through a hole about 12 by 18 inches at the footing
- How deep: we drive each pier until it reaches weathered shale or bedrock, typically around 22 feet and up to 70 feet when needed
- Spacing: usually 5 to 7 feet apart along the settled wall
- The finish: a steel bracket ties the pier to your footing and lets us level that section of the house
- Install time: about a day per pier; give the house a month or two after lifting before you patch drywall
- Warranty: lifetime and transferable on piers driven to bedrock
- When it fits: diagonal cracks off windows and doors, sloping floors, doors that won’t latch, a corner that has visibly sunk
See how we install push piers in Lee’s Summit, or learn more about foundation piering.
Steel I-Beam Wall Bracing for Bowing Basement Walls
Bracing stops a wall from moving any further inward, and it’s all done from inside the basement, so your yard stays intact.
- How it works: steel I-beams anchor into the basement floor and tie to the floor joists above with steel bolts and brackets or solid bridging
- Spacing: no more than 6 feet apart on poured walls and within 4 feet on block walls
- Warranty: 15 years on I-beams
- When it fits: a horizontal crack, a wall bowing in at mid-height, a basement you plan to finish later
Read more about bowing wall repair in Lee’s Summit and how wall bracing works.
Deadman Anchors and Wall Push
When a wall has leaned far enough that you want it straightened, not just held, anchors are the better tool.
- How it works: an anchor is buried out in the yard, connected by a steel rod through the wall, and tightened to hold the wall in place
- Wall push: we dig out the soil behind the wall and push it back toward plumb before locking it in
- Warranty: 15 years on wall anchors
- When it fits: a significant lean, a wall you want straightened, and enough yard to set the anchors
Foundation Crack Repair by Injection
A vertical crack that weeps after a rain is the most common call we get from newer homes.
- How it works: we inject urethane under pressure so it fills the crack through the full thickness of the wall and stays flexible
- How long: usually done the same day
- Worth knowing: injection stops water. It doesn’t stop a wall that’s still moving, so we check for movement first.
Read more on wall crack repair.
Sump Pumps, Battery Backup and Drain Tile
When water rises under the floor or comes in at the cove joint, you need somewhere for it to go.
- Drain tile: perforated pipe bedded in washed rock at footing level collects water before it reaches the floor
- Sump system: a pit, pump, lid, and discharge line moves that water out of the house
- Battery backup: keeps the pump running when a storm knocks out power, which is exactly when you need it
- Discharge: routed to daylight at least 3 feet from the foundation, as Lee’s Summit Water Utilities asks
- Warranties: 15 years on drain tile, 5 years on sump pumps and waterproofing membrane
What Foundation Repair in Lee's Summit Costs
Most of the repairs we do land between $4,000 and $15,000. A small crack injection can run under $500, and a full-perimeter pier job can pass $25,000. Here’s how the pieces are priced:
Repair | Typical price |
Concentric steel piers | $1,600 to $1,800 per pier |
Steel I-beam wall bracing | $500 to $700 per beam |
Deadman anchors | $1,100 to $1,300 per anchor |
Wall push | $325 to $375 per foot |
Wall rebuild | $90 to $120 per square foot |
Crack injection | $40 to $50 per foot |
Sump pump (pit, pump, lid, discharge) | $1,800 to $2,000 |
Sump pump with battery backup | $2,400 to $2,600 |
Interior drain tile | $75 to $90 per foot |
What Moves Your Foundation Repair Cost Up or Down
- How far it has gone. Catching movement early almost always costs less.
- How many units. More piers, more beams, more feet of drain tile means a higher total.
- Access. Tight spaces, finished basements, and deeper digs add labor time.
- Inside or outside. Exterior work usually costs more because of the digging.
- How much of the house needs it. If one wall is the problem, we price one wall.
Standard homeowners policies usually don’t cover settling or soil movement (here’s why), so most people pay out of pocket. Ask about financing options at your inspection, and see our full foundation repair cost guide.
Permits and City Rules to Know
You shouldn’t have to sort out city requirements yourself, but it helps to know what’s in play.
- New codes: Lee’s Summit adopted the 2024 International Residential Code, which took effect October 1, 2026. Jobs submitted before that date are reviewed under the 2018 code.
- Permits: the city’s residential permit list doesn’t name foundation repair specifically. We confirm what your job needs with Development Services (816.969.1200) and handle any permit before work starts.
- Sump discharge: the city asks that sump pumps drain to daylight at least 3 feet from the foundation and never into the sanitary sewer. We route every discharge line to meet that.
- Historic homes: if you live in the downtown historic area, tell us early so we can plan around any review.
- Selling later: keep your repair paperwork and warranty together. Buyers and their inspectors will ask for both.
Why Homeowners Pick Olson as Their Foundation Repair Company
- Your estimator has done the work. John Murphy has 26 years in foundation repair: 21 years installing piers, bracing, and drain systems, plus 5 years in sales. He once saved a homeowner from relocating a water heater because he knew the repair could be done around it.
- One wall when one wall is the problem. We repair the side that’s failing and watch how the house performs before recommending more.
- In business since 1986. Our shop sits just off I-470, and your warranty is backed by a company that’s still here.
- BBB A+ rated. Accredited by the Better Business Bureau since 2017.
- 4.7 stars on Google. Rated by close to 100 Kansas City area homeowners.
- Licensed and recognized. Licensed in Johnson County and named one of Kansas City’s best foundation repair contractors by TheHomeMag KC in 2024. See our highlights and awards.
- Warranties matched to the repair. Lifetime, transferable coverage on piers, I-beams, and drain tile; 5 years on sump pumps and waterproofing membrane; and 3 years on adjustable posts. See what our warranties cover.
How Your Repair Goes, Start to Finish
Contact Us Now
Call (913) 592-3300 or request your free in-home inspection. There’s no charge and no deposit, and our shop is just off I-470, so Lakewood, Raintree Lake or downtown is a short drive for us.
Get an Assessment
We check grading, downspouts, and window wells outside, then cracks, wall plumb, and floor levels inside. You get the diagnosis on the spot and an itemized written bid with real options within 24 to 48 hours.
Complete Work
We confirm any permit with the city and start on the date we gave you. Most jobs take 1 to 5 days, and you can almost always stay home; just clear 6 to 10 feet along the walls we’re working on. The crew cleans up before leaving.
Get Peace of Mind
Before work starts, you see the warranty for your specific repair: what it covers, for how long and whether it transfers if you sell. When we finish, we walk you through the work and hand over the paperwork a future buyer’s inspector will ask for.
Foundation Repair Contractors Near You, Across Eastern Jackson County
We work in every corner of Lee’s Summit, from Lakewood and Raintree Lake to Winterset, New Longview and the older streets downtown, plus homes around Lake Lotawana and Lake Winnebago. For a broader look at everything we do in town, visit our Lee’s Summit overview.
We also serve nearby cities:
- Raytown foundation repair
- Independence foundation repair
- Blue Springs
- Belton
- Grandview, where we handle foundation repair, push piers, bowing wall repair, and basement waterproofing
See all our foundation repair services across the Kansas City metro.
Lee's Summit Foundation Repair FAQs
Most repairs we do fall between $4,000 and $15,000. Piers run $1,600 to $1,800 each, and a small crack injection can be under $500. Your inspection gives you an exact number.
The city’s residential permit list doesn’t name foundation repair specifically, so requirements depend on the job. We check with Development Services and handle any permit your repair needs.
Swelling clay with water close to the surface is the main cause. It shrinks in dry spells, swells in wet ones, and hilly lots add uneven pressure on top of that.
Usually not. Standard policies typically exclude settling and soil movement, though damage from a covered event like a burst pipe may be different, so check your policy.
It usually means soil is pushing the wall inward, so it deserves a look soon. Caught early, bracing can stop it before the wall needs to be rebuilt.
The city asks that it drain to daylight at least 3 feet from your foundation. It should never connect to the sanitary sewer.
Thin vertical cracks from concrete shrinkage are common and often just need sealing if they leak. Cracks that widen, run diagonally, or come with sticking doors point to movement and should be inspected.
Most jobs take 1 to 5 days. Crack injections are often done in a single visit.
In most cases, yes. We’ll ask you to move belongings 6 to 10 feet back from the walls we’re working on, and the rest of the house stays usable. Here’s more on living at home during repairs.
It depends on the repair. Piers driven to bedrock carry a lifetime warranty that transfers if you sell; wall anchors, I-beams, and drain tile get 15 years, and sump pumps and waterproofing membrane get 5 years.
Get a Straight Answer About Your Foundation
A crack you’ve been watching, or a damp corner after every storm doesn’t have to turn into a big project. Most problems are cheaper and simpler to fix when you catch them early, and a free inspection tells you exactly where you stand. Call (913) 592-3300 or request your free inspection to get honest, experienced foundation repair in Lee’s Summit.
We Solve Foundation Repair Issues
Get professional basement waterproofing & foundation repair services at a
fair price with the quality of service you deserve.