Foundation Repair Cost Guide
Updated 2026-06-17
The home page calculator gives you a range in about ten seconds. This page is for the questions that come after: how the per-unit numbers add up, what actually moves a contractor's bid up or down, and how to tell a fair quote from a padded one.
What each repair method actually costs, piece by piece
Contractors rarely quote a flat "foundation repair" price. They price the units of work involved, then add mobilization and overhead. Knowing the unit costs helps you sanity-check a bid line by line instead of judging one lump number.
- Epoxy or polyurethane crack injection: roughly $300 to $800 per crack, depending on length and whether the wall needs excavation to seal from outside.
- Carbon fiber straps for bowing walls: about $350 to $700 installed per strap; most walls need three to eight straps depending on the span.
- Steel push piers or helical piers: $1,200 to $3,500 installed per pier; a typical settled corner needs four to eight piers, which is where the bigger settling-repair totals come from.
- Slab jacking or mudjacking: priced by the square foot of slab lifted, commonly $5 to $8 per square foot, cheaper per unit than piering but not always a lasting fix on its own.
- Wall anchors: similar per-anchor pricing to carbon fiber but suited to more severe bowing; anchors also require yard access on the exterior side of the wall.
What moves a bid up or down
Two contractors can look at the same crack and land $3,000 apart. Here is what usually explains the gap.
- Access. A crawl space with eighteen inches of clearance costs more labor than a walkout basement.
- Soil. Expansive clay that swells and shrinks with moisture often means more piers, spaced closer together, than stable soil would need.
- Permits. Many municipalities require a permit for pier installation or underpinning, typically $100 to $500, and some require the engineer's stamp to be filed with it.
- Warranty length. A transferable lifetime warranty on pier work costs more up front than a five-year warranty, but it can matter at resale.
- Timing. Contractors are busiest in late spring through summer when dry soil makes excavation easier. Booking in the off-season sometimes gets you a lower price and a shorter wait.
Reading a contractor's bid
A fair bid spells out how many piers or straps are included, what depth or spacing they are set at, what the warranty actually covers, and whether permit fees and backfill are part of the number or billed separately. If a bid is missing any of that, ask before you sign; a cheaper number that leaves out backfill or permits is not actually the cheaper option once those show up as change orders.
Questions this page gets asked
How long does a typical foundation repair take?
Crack injection or a handful of carbon fiber straps is often a one-day job. Pier installation for a settled corner usually runs two to four days depending on pier count and access. Full perimeter underpinning on a larger home can take one to two weeks.
Do I need a permit for foundation repair?
In most municipalities, yes, for pier installation or underpinning, and sometimes for carbon fiber or wall anchor work too. A licensed contractor will typically pull the permit as part of the job; if a bid does not mention one, ask whether it is included.
What is the difference between mudjacking and pier lifting?
Mudjacking pumps a cement or foam slurry under a slab to raise it back closer to level. It is cheaper per square foot but works on the existing soil, so it can settle again if the underlying soil problem was not fixed. Pier lifting drives steel supports down to stable soil or bedrock, which costs more but addresses the cause rather than just the symptom.
How do I know if a contractor's bid is fair?
Get at least two bids for the same documented scope, ideally after an independent engineer's report so both contractors are pricing the same repair. Compare pier count, depth, warranty terms, and what is included, not just the bottom-line total.
Does the age of the house change the cost?
Older homes with original masonry or fieldstone foundations sometimes cost more to repair because the materials are harder to anchor into and may need specialized methods. Age alone does not predict cost as much as the foundation type and how far the problem has progressed.
Can foundation repair be financed?
Many foundation repair companies offer in-house financing or work with third-party lenders, and some homeowners use a home equity line of credit instead. Ask about financing terms and total cost with interest before assuming a monthly payment is the cheaper path.