2026 Cost Data — Updated Monthly
Local 2026 Pricing · St. Louis, MO

Foundation Repair Costs in St. Louis, MO

Average Cost

$4,500

Typical Range

$2,200–$22,100

vs. National Avg

12% below

the $5,100 national average

How Much Does Foundation Repair Cost in St. Louis, MO?

St. Louis sits on Mississippi River alluvial deposits and loess soil that retain enormous amounts of water, creating persistent hydrostatic pressure against foundations. The city's extreme weather swings from humid 100-degree summers to frigid winters create damaging freeze-thaw cycles that crack and bow basement foundation walls. Many historic brick homes in Tower Grove, the Hill, and Soulard have stone or brick foundations from the late 1800s that require specialized restoration and underpinning. The limestone karst geology underlying the metro area creates occasional sinkholes and subsurface voids that can undermine foundations. Affordable labor and a competitive contractor market keep foundation repair costs well below the national average across the bi-state metro.

The average foundation repair project in St. Louis costs $4,500, which is 12% below the national average of $5,100. Most homeowners in the St. Louis metro area pay between $2,200 and $22,100, depending on the type of damage, repair method required, and foundation type.

The St. Louis market offers competitive pricing for foundation repair compared to coastal metros. This makes it an excellent time to address any foundation concerns, as early repairs prevent more costly structural damage down the road and protect your home's value.

St. Louis, MO Foundation Repair Service Costs

Service Low High Average
Crack Repair $225 $2,250 $720
Piering / Underpinning $4,500 $22,050 $10,575
Mudjacking / Slabjacking $450 $2,700 $1,125
Wall Anchors / Stabilization $3,510 $10,575 $6,165
Basement Waterproofing $1,755 $8,820 $4,410
Foundation Inspection $270 $900 $540

*Costs are estimates based on St. Louis metro area data for 2026. Actual prices vary by damage severity, repair method, and specific location.

St. Louis, MO Permits & Regulations

Foundation repair in St. Louis typically requires a building permit, especially for structural work. Here's what you need to know.

Permit Required?
Yes — for structural foundation work
Typical Permit Cost
$225
Issuing Authority
City of St. Louis Building Department

St. Louis requires permits for foundation piering, underpinning, and structural repair work. A structural engineer's report is typically required before permit issuance. Minor crack sealing is generally exempt. Inspections required for all permitted foundation work.

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Nearby Areas

Also serving: Florissant, University City, Kirkwood, Ballwin, Belleville

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