Foundation Repair & Basement Waterproofing in Mission, KS
A basement crack, a sticking door, or water after a hard rain can each have more than one cause. Our approach to foundation repair & basement waterproofing in Mission, KS is simple: find out why it’s happening, then repair only what needs it. Olson Foundation Repair has served Kansas City homeowners since 1986, and every inspection starts with a walk around your whole house, not a quick look at one crack.
Why Basements in Mission Need a Closer Look
Mission is mostly built out, and much of it was built at once. According to the city’s own 2023 planning report, about 58% of single-family homes here went up in the 1950s. A few things follow from that:
- Your basement has been through 70 or so years of wet and dry cycles. Clay soil swells when it’s wet and shrinks when it dries. Over decades, that push and pull shows up as cracks, bowed walls, or settled corners.
- Drainage on a house this age often needs attention. Short downspouts and soil that has settled toward the foundation are common, and they send roof water right where you don’t want it.
- Stormwater moves fast through town. Rock Creek and Turkey Creek both carry floodplain areas, and the city has tracked nuisance flooding on a number of residential streets. In August 2016, a gauge near Martway and Rock Creek recorded nearly 5 inches of rain in 12 hours.
- Dry years matter too. The 2022 and 2023 drought shrank clay across the metro, and many homeowners first noticed settlement after it. Watering evenly around the foundation during long dry spells helps keep the soil from pulling away. More on expansive clay.
None of this means your house has a problem. It means a crack or a damp corner here deserves a real look before anyone hands you a price.
Structural Problem or Water Problem? Here's How to Tell the Difference
This is the most important question we answer, because the two need very different fixes. Structural repair stops a foundation from moving. Water management keeps water out of the basement. Some homes need one, some need both, and paying for the wrong one is how people end up with a wet basement after spending thousands.
| What you're seeing | What it could mean | What we check |
|---|---|---|
| Horizontal crack partway up a block or poured wall | Soil pressure pushing the wall inward | Whether the wall is bowing, how far, and what's loading it from outside |
| Stair-step cracks in block walls | Settlement, wall pressure, or old mortar | Floor and wall levels, footing condition, which way the wall is leaning |
| Vertical crack in a poured wall | Normal shrinkage, settlement, or a leak path | Whether it's moving, whether it's wet, and whether one side has dropped |
| Sticking doors, sloping floors, drywall cracks upstairs | Possible settlement under part of the house | Elevations across the floor and outside corners |
| Water along the base of the wall after rain | Surface water or groundwater pressure | Gutters, downspouts, grading, and where water collects in the yard |
| Water coming up through a floor drain | Possibly a sewer backup, not groundwater | Drain location, timing, and whether the issue is the sanitary line |
| White, chalky residue on the wall | Water moving through the wall and evaporating (efflorescence) | Where moisture comes from and whether it's ongoing |
A crack alone isn’t a diagnosis. Its width, direction, and location are clues, but we look at the whole house before recommending a repair.
What We Check During Your Inspection
Our inspection is the step that decides everything else, so we don’t rush it.
- We start by listening. When did you first notice it? Does it change with the seasons or after storms? Has anything been repaired before?
- We walk the whole perimeter. Gutters, downspout discharge, grading, window wells, the four corners of the house and garage, and any steps or porches pulling away.
- We measure inside. Wall bow, floor elevations, and crack patterns, so the scope is based on numbers instead of guesses.
- We look at access. Finished walls, utilities, mechanicals, fences, and driveways all affect how a repair can be installed.
- You get a written, itemized bid, usually within one to two days, with the warranty for each item listed.
If the best advice is to fix a downspout and keep an eye on a crack, that’s what we’ll tell you. See what a foundation inspection involves.
House Foundation Repair: Matching the Fix to the Problem
Once we know what’s causing the movement, we recommend the repair that fits. Here’s what we use and when.
Concentric Steel Push Piers (for settlement)
When part of a house has dropped, push piers move its weight off unstable soil and onto the limestone and shale bedrock below. We dig beside the footing, set a steel bracket centered under the wall, and hydraulically drive steel sections to refusal, typically 22 to 70 feet down. Each pier is load tested as it goes in, and where possible we lift the foundation back toward level.
- How many piers? It depends on how much of the house has settled. Piers are usually spaced about 5 to 7 feet apart on poured walls and closer on block or stone. A typical 2,000-square-foot home that needs piering takes somewhere around 4 to 10.
- After a lift: give the house a month or two to adjust before patching drywall or trim. Learn more about foundation piering.
Wall Bracing with Steel I-Beams (for bowing walls)
For basement walls pushed inward by wet clay, steel I-beams anchored at the footing and fastened to the floor framing stop further movement. Beams are set about every 4 feet on block walls and up to 6 feet apart on poured walls. On many homes, they go in within hours, without digging up the yard. In a finished basement, we open only a small section of ceiling at each beam. See how wall bracing works.
Anchors, Push Back or Rebuild (for walls that have moved a lot)
On sloped lots, or where bracing inside isn’t practical, an anchor buried in the yard can restrain the wall from outside. If a wall has moved too far for bracing alone, we excavate, push it back toward plumb, add restraints, and regrade. When a block or stone wall can’t be saved, we rebuild that section with reinforced block.
Basement Wall Crack Repair (after movement is handled)
On poured walls, epoxy injection seals a crack structurally. On block or stone, tuckpointing with mortar is often the right approach, because injection doesn’t hold well in hollow block. We seal cracks only after the cause is under control. Filling a crack in a wall that’s still moving just means it comes back. More on wall crack repair.
Helical Piers and Polyjacking (for porches, slabs and additions)
Porches, slabs, and additions without a proper footing may need helical piers instead of push piers. For sunken driveways, sidewalks, and patios, polyjacking lifts concrete with lightweight foam through small holes. We don’t offer mudjacking, concrete piers, or carbon fiber.
Not every house needs piers everywhere. If only one side has settled, we may recommend stabilizing that side and monitoring the rest. Sometimes that’s the right call; sometimes the whole foundation needs attention. The inspection tells us which, and we’ll explain our reasoning either way.
Basement Waterproofing: Start Outside, Then Work In
In our experience, 90 to 95% of basement water problems around Kansas City start with gutters or drainage, not the foundation itself. So we fix the cheapest likely cause first and add an interior system only when it’s actually needed.
Gutters, Downspouts and Grading
Water that drops off a roof and soaks in next to the house ends up pressing against your basement walls. Clean, properly sized gutters, downspouts buried and carried well away from the foundation, and soil that falls about 6 inches over the first 10 feet from the house solve a surprising number of wet basements on their own. Check your gutters at least twice a year, especially after the leaves drop.
Swales and French Drains
If your yard funnels water toward the house, a swale (a shallow, shaped channel in the lawn) can redirect surface water with little upkeep. A French drain collects water in a gravel trench with perforated pipe and carries it away. It handles more water but needs to stay clear to keep working. We’ll tell you which fits your lot. Explore drainage solutions.
Interior Drain Tile and Sump Pumps
When groundwater pressure is pushing water through the walls or the cove joint (where wall meets floor), we install interior drain tile. We cut the floor about 12 to 16 inches from the wall, lay perforated pipe wrapped in filter fabric in gravel, and run it to a sump pit, then re-pour the concrete. Most systems take 1 to 3 days.
- Discharge matters. The sump line should empty at least 5 feet from the house, through solid pipe that won’t freeze or send water straight back to the pit.
- Plan for power outages. A battery backup keeps the system running when storms knock out power.
Is It Groundwater or a Sewer Backup?
Water rising from a floor drain during a heavy storm is often a sanitary sewer backup, which a waterproofing system won’t fix. Johnson County Wastewater runs a Backup Prevention Program for confirmed sewer backups, plus a free JoCo Inflow program that disconnects sump pumps and downspouts tied into the sanitary sewer. If your issue is groundwater through walls or floors, that’s where we come in.
Dealing with a Flooded Basement Right Now?
Stay away from standing water near outlets or appliances, and call a plumber first if the water came from a pipe or drain. Once things dry out, call us so we can find out how the water got in and keep it from happening again.
Damp or Musty, but Not Wet?
A basement can feel damp without any leak. Warm, humid air condenses on cool concrete, and relative humidity above about 50% invites mold. Aim for 30 to 50% with a dehumidifier and a cheap hygrometer to check it. If you see white, chalky residue (efflorescence), water is moving through the wall, and that’s worth an inspection.
Foundation Repair Cost and Waterproofing Basement Cost in Mission
Price depends on the cause, how many piers or braces are needed, access to the work area, and whether the repair is inside or outside. Two houses with similar cracks can have very different bids, which is why we don’t price from photos.
A few figures from our current published pricing:
| Repair | Typical range |
|---|---|
| Concentric steel push pier | $1,600 to $1,800 per pier |
| Steel I-beam wall brace | $500 to $700 per beam |
| Interior drain tile | $75 to $90 per linear foot |
| Sump pit, pump and discharge line | $1,800 to $2,000 |
| Sump system with battery backup | $2,400 to $2,600 |
| Epoxy crack injection (poured walls) | $40 to $50 per linear foot |
Basement waterproofing costs vary too much by method to quote a single price per square foot. See our full foundation repair cost guide for more detail.
Warranties That Match Each Repair
| Repair | Warranty |
|---|---|
| Steel push piers driven to bedrock | Lifetime, transferable |
| Wall anchors and I-beams | 15 years |
| Interior drain tile | 15 years |
| Sump pumps | 5 years |
| Waterproofing membrane | 5 years |
| Adjustable posts | 3 years |
For Mission sellers and landlords, a documented, transferable pier warranty can help when a buyer’s inspector flags the foundation. Buying instead? Here’s what to know about a house with foundation issues.
Why Mission Homeowners Choose Olson as Their Foundation Repair Company
- In business since 1986. We’ve been fixing Kansas City foundations for decades and know how local clay and older basements behave.
- An estimator who has done the work. John Murphy has 26 years in foundation repair: 21 installing repairs and 5 in sales. Having dug footings and set braces himself, he sees where equipment can reach, what’s in the way, and what scope is actually practical. On one Olson job, he found a way to complete the repair without relocating the homeowner’s water heater.
- Scope based on diagnosis. We evaluate the affected part of the house instead of prescribing piers around the whole foundation by default.
- Licensed in Johnson County. Contractor License #2025-000087. We’ll confirm permit requirements with the City of Mission before work starts.
- Reviewed for straight answers. Customers regularly mention clear communication, honest pricing, thorough estimates, and crews who clean up. BBB A+ rated. Read our reviews.
How Our Foundation Repair Contractors Handle Your Project
Contact Us Now
Get an Assessment
We start outside: gutters, downspouts, grading, and where stormwater runs across your lot. Then we head into the basement to measure wall bow, floor levels, and crack patterns. We talk through what we found, and within 24 to 48 hours you get an itemized written bid ranked by urgency, so you can see what needs doing now and what can wait.
Complete the Work
The City of Mission requires permits for most structural work, and we’re licensed with Johnson County, so we handle that part. Clear belongings about 6 to 10 feet back from the work walls. Most homeowners stay home the whole time. Wall bracing can be done in half a day, pier and drain tile jobs usually take a few days, and our crew restores the work area when we’re done.
Get Peace of Mind
You see the warranty for each item on your bid before any work starts. At the final walkthrough, we go over the finished repair and hand you the paperwork. Our pier warranty transfers to the next owner, which helps if you sell or rent the house later.
Looking for Foundation Repair Near You? We Also Serve Nearby Cities
If you’re searching for basement waterproofing near you and live just outside Mission, we also work in Roeland Park, Merriam, Prairie Village, Overland Park, Shawnee and Leawood. See our full service area.
FAQs About Foundation Repair & Basement Waterproofing in Mission, KS
Some cracks are cosmetic and only need watching, while others mean the wall or footing is still moving. Mark the ends of a crack and check it over a few weeks. If it grows, gets wet, or comes with sticking doors or sloping floors, schedule an inspection.
It depends on the cause and the number of piers, braces, or feet of drain tile needed. A single pier or brace runs from several hundred to under two thousand dollars, while larger jobs cost more. An on-site inspection is the only way to get an accurate bid.
Interior I-beams work well for most bowing walls and install quickly without digging up the yard. Anchors make sense on sloped lots or where bracing inside isn’t practical. Walls that have moved too far may need to be pushed back or rebuilt.
The City of Mission requires permits for most structural renovation work, and contractors must hold a Johnson County contractor license. We confirm the requirements for your repair and handle the permit as part of the job.
Most policies exclude settlement and soil movement. Damage from a sudden event, like a burst pipe, may be covered, and sewer backup usually needs a separate endorsement. Check with your insurer about your specific policy.
Water seeping through walls or the wall and floor joint is usually groundwater. Water coming up through a floor drain during heavy rain often points to a sewer backup. Johnson County Wastewater has programs that can help with confirmed sewer backups.
If your basement relies on a sump, a backup is worth it. The heaviest storms are also when power is most likely to go out, which is exactly when a pump needs to run. Most pumps last 10 to 15 years, so an older one is worth checking too.
Often, yes. We rank repairs by urgency, so you can handle active water or movement first and schedule lower priority work later. Some problems need to be fixed together, and we’ll tell you when that’s the case.
Our lifetime warranty on steel push piers transfers to the next owner. Other repairs carry their own terms, and each one is listed on your bid.
In most cases, yes. You’ll just need to clear space along the walls being repaired and expect some noise while we work.
Small jobs like wall bracing can be done in half a day. Larger pier or waterproofing projects usually take a few days, and bigger combined jobs can run up to about two weeks.
Keep relative humidity between 30 and 50%. Above about 50%, mold becomes more likely, so a dehumidifier and a hygrometer are worth having.
Talk to a Foundation Repair & Basement Waterproofing Company That Finds the Cause First
If you’re seeing cracks, moving walls, or water where it shouldn’t be, we’ll find the cause and give you a clear plan. Call (913) 592-3300 or request your free inspection for foundation repair & basement waterproofing in Mission, KS.
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