Bowing basement wall repair cost after an inspection
A typical bowing basement wall costs $2,000 to $7,500 to fix, more for tiebacks or a new wall. What each repair costs and what to ask for.
Updated · By 
Ben Sikes
How much does it cost to fix a bowing basement wall?
A typical bowing basement wall costs $2,000 to $7,500 to fix, or $75 to $400 per foot, according to Today's Homeowner. A full wall replacement runs $10,000 to $25,000 or more. Which fix your wall needs depends on how far it has moved, so get a structural engineer to look at it before your inspection deadline. Then ask the seller to pay for the repair the engineer specifies, not a round number.
Key takeaways
- Past 2 inches of bowing, the fix often moves from wall anchors to tiebacks, and the price per foot at least doubles.
- Home inspector training calls a horizontal crack in a block or brick wall potentially serious. Send it to the same engineer as the bow.
- Ask each contractor whether the permit and the engineer are in the price.
Is a bowing basement wall serious?
Treat it as a structural finding. The International Association of Certified Home Inspectors (InterNACHI) teaches inspectors that a horizontal crack in a block or brick foundation wall is "potentially serious," because it shows the wall "is bent or broken." The foundation crack guide covers the other crack patterns.
InterNACHI lists what can push a wall in: poor backfilling, vibration from heavy equipment or traffic, and wet soil that swells or freezes against the wall. Occasionally, water washes soil from one side of a footing, the footing rotates, and the wall above buckles. Today's Homeowner warns that a bowing wall may be a sign of a sinking foundation, and a larger fix may be necessary. If the wall also has horizontal or vertical cracks, it says a more permanent foundation repair is likely necessary.
How much bowing is too much? Today's Homeowner says that in most cases, bowing beyond 4 inches is a major issue that could mean a serious foundation repair. Don't judge a smaller bow by eye. Have the engineer measure it.
Your inspector may not settle which case you have. Under the American Society of Home Inspectors (ASHI) Standard of Practice, inspectors don't have to judge whether structural parts are adequate. Don't expect the report to say which repair the wall needs.
Who tells you which repair the wall needs?
A structural engineer. Today's Homeowner recommends no foundation work without an engineer's report.
Book the engineer before any repair company, so the scope you send out for bids isn't written by the company selling the fix. Ask for the report in writing, with the repair method and the length of wall it covers. Then send that scope to two or three foundation contractors.
How to get repair estimates during the inspection period covers the fastest ways to get contractors out.
What does each repair cost?
Can the wall be fixed? InterNACHI says it may be possible to jack the wall back into place and brace it from inside, or, where the ground allows, to ease the pressure by lowering the ground outside. Contractors price the common fixes like this:
| Repair | Used for | Cost |
|---|---|---|
| Wall anchors | Bowing under 2 inches | $80 to $150 per foot |
| Steel or carbon fiber straps | Less extensive bowing, no digging | $85 to $275 per foot |
| Helical tiebacks | Bowing past 2 inches | $300 to $360 per foot |
| Wall straightening | Pushing the wall back, after straps go in | $335 to $550 per foot |
| Steel I-beams | Severe bowing, 2 to 4 inches | $4,000 to $10,000 total |
| Full wall replacement | Extreme bowing or partial collapse | $10,000 to $25,000 or more |
| Most bowed wall repairs, local (Chicago area) | Whatever mix the wall needs once inspected | $5,000 to $10,000 or more |
The engineer's scope picks your row. Within it, three things move the price:
- How far the wall has moved. Bowing closer to 4 inches costs considerably more than a small bow.
- How long the wall is. Most prices are per foot, and a bowed wall is typically at least 10 feet long.
- Soil and access. Expansive clay, or a wall that's hard to reach from outside, pushes the cost up.
Some contractors quote one lump sum for the whole job. Others quote labor only, and the permit and engineer come on top. Most include the permit in their price. If yours doesn't, expect several hundred dollars, especially if digging is involved.
What might your wall cost?
Say the engineer finds a 24-foot wall bowing less than 2 inches and specifies wall anchors. The anchors cost 24 × $80 = $1,920 to 24 × $150 = $3,600. Add the engineer's $300 to $1,000 and the total is $1,920 + $300 = $2,220 to $3,600 + $1,000 = $4,600.
Now say the same wall has moved past 2 inches and needs tiebacks. That's 24 × $300 = $7,200 to 24 × $360 = $8,640. With the engineer, $7,200 + $300 = $7,500 to $8,640 + $1,000 = $9,640. Both assume the permit is in the bid. Drywall and paint can be extra, so check whether the bid covers them.
Same wall, and the inches decide which total you ask for. That's why the engineer's report comes before your request.
What should you ask the seller for?
Ask for the repair the engineer specifies, backed by a contractor's written bid. Name the wall, the method from the engineer's report, and the bid amount, not a general request to fix the foundation. Also ask for any past engineer's report, permits, repair invoices, and any repair warranty that transfers to you.
Decide whether you want the seller to do the work, give a credit, or lower the price. What to ask for after a home inspection covers how this line fits with the rest of your list, and the buyer repair request letter template has the wording.
The rest of your report needs numbers too. Kept prices every line of an inspection report for $79, usually under 4 hours, and marks foundation movement like this wall as needing a professional quote (how Kept prices).
Should you buy a house with bowing basement walls?
That depends on the engineer's scope and the bid. A wall that needs anchors is a priced line on your list. A wall that needs rebuilding runs into five figures. Today's Homeowner notes the full extent of the damage is often hard to see until repairs begin, typically after closing, so get the engineer's scope before you commit.
If the seller won't pay, you can counter with a credit or a lower price for the bid amount, or cancel if your contingency allows it. Your contract sets the deadline and whether you can cancel, so confirm both with your agent or attorney. When to walk away after a home inspection shows how to weigh it.
Can you fix a bowing basement wall yourself?
Not the structural part. Today's Homeowner advises leaving the wall repair to professionals and saving do-it-yourself work for the drywall and paint. A repair kit is not a reason to lower your ask. Price your request on the repair the engineer specifies.
What if the engineer can't come before your deadline?
Ask your agent to request a short extension in writing. If you can't get one, send the request anyway. For the wall, ask for a structural engineer's evaluation and the repair it calls for, at the seller's cost. Put real numbers on every other line.
While the wall waits on the engineer, upload your inspection report to Kept so the rest of your request goes in with numbers behind it.
Sources
Cost figures are modeled from public wage and materials data unless a line says observed. Kept is accountable for the numbers on this page, and corrections go to support@usekept.com. How we price.