Foundation Repair Cost Calculator

Most homeowners spend between $2,500 and $12,000 on foundation repair. Small jobs are far cheaper: sealing two hairline cracks by injection estimates $1,210.00 in this calculator (average-cost state, 10% contingency). A mid-size structural job - 10 steel push piers for a settling 60 ft wall - estimates $19,360.00 all-in (engineer report, permit, and 10% contingency included). Piering a full foundation or rebuilding a failed wall runs $15,000 to $30,000 or more. The biggest cost driver is not the size of your house; it is what the foundation is doing: cracking, bowing inward, or sinking.

Steel push piers typically cost $1,300 to $2,000 each installed. Contractors space them about every 6 feet along the settling wall, so a 60 ft wall needs about 10 piers. As a reference from this calculator, 10 push piers in an average-cost state estimate $19,360.00 all-in - that is $16,500.00 for the piers plus a $750 engineer report, a $350 permit, and 10% contingency, with a planning range of $15,510.00 to $23,210.00. Most residential piering projects use 7 to 10 piers and land between $7,000 and $30,000 total.

Yes, per pier. Helical piers run $1,600 to $2,500 each installed versus $1,300 to $2,000 for steel push piers. On the same 60 ft wall (10 piers, engineer report, permit, 10% contingency, average-cost state), push piers estimate $19,360.00 while helical piers estimate $23,760.00 - about $4,400.00 more. Choose helical piers for light structures (porches, decks, additions), soft or fill soils, and new construction; choose push piers for heavy settled homes where the building's own weight drives the pier.

For a 30 ft basement wall with a 1 to 2 inch bow, carbon fiber straps estimate $8,250.00 (8 straps) while wall anchors estimate $7,480.00 (6 anchors) - both figures include a $750 engineer report, a $350 permit, and 10% contingency in an average-cost state. Straps ($600-$1,000 each) are non-invasive and arrest further movement but do not straighten the wall; anchors ($700-$1,200 each) can pull a wall back toward plumb but require excavating the yard to set the anchor plates.

Epoxy or polyurethane crack injection costs $400 to $800 per crack. Two hairline cracks estimate $1,210.00 in an average-cost state with 10% contingency (planning range $880.00 to $1,760.00). Wide, displaced, or stair-step cracks need structural crack repair at $700 to $1,200 per crack instead - injection alone will not fix a crack that is still moving. If water is coming through, budget drainage work too: exterior french drains run about $75 per linear foot.

Use the 55% rule built into this calculator: if a repair estimate exceeds 55% of the wall-rebuild planning figure, get a rebuild quote before committing. Example: repairing a 40 ft wall bowed 2.5 inches with 8 wall anchors plus 40 ft of waterproofing estimates $15,070.00, while rebuilding that wall is roughly $26,000.00 - the repair is 58% of rebuild cost, above the 55% threshold, so a rebuild quote is worth getting. Walls bowed more than 3 inches or sheared usually skip straight to rebuild at $500 to $800 per linear foot.

For any structural repair - piers, anchors, straps, beams, or wall rebuild - yes, get one. An independent structural engineer report costs $500 to $1,000 (this calculator budgets $750) and does three things a contractor's free inspection cannot: it diagnoses the cause independently, it specifies the repair method and quantities, and it gives you a document to bid against so all contractors quote the same scope. Many jurisdictions also require an engineer's letter for the permit.

Usually yes for structural work. Cosmetic crack sealing often needs no permit, but piers, anchors, straps, beams, and wall rebuilds almost always do - plus inspections along the way. Permit fees for foundation work typically run $200 to $600 (this calculator budgets $350); some cities charge valuation-based fees that scale with project cost. Unpermitted structural work can trigger stop-work orders, insurance denials, and resale or mortgage problems.

Mudjacking costs $4 to $8 per square foot. Lifting a sunken 200 sq ft slab section estimates $1,320.00 in an average-cost state with 10% contingency (planning range $880.00 to $1,760.00). Polyurethane foam lifting costs more - $7 to $14 per square foot - but uses smaller holes, adds less weight, and cures faster. Both are far cheaper than tearing out and replacing the slab.

Contractors typically space piers every 5 to 8 feet along the affected wall - this calculator uses 6-foot spacing. A 60 ft settling wall needs about 10 piers; most residential projects use 7 to 10 piers total. Interior piers may be added under slab centers or beam lines. Only the settling walls get piers - a stable wall does not need them, which is why a wall-by-wall inspection (or the wall-length input above) matters more than the home's total square footage.

Usually not. Standard homeowners policies exclude settling, earth movement, and wear and tear - the causes behind most foundation problems. Coverage may apply when the damage comes from a covered peril, such as a burst pipe undermining the soil or a covered flood event. Read the earth-movement and water-damage exclusions in your policy, and document the damage with dated photos either way.

They get worse, and waiting is the most expensive option. A static hairline crack that costs about $1,100.00 to inject today can become a bowing wall needing $6,400.00 of carbon straps once water infiltration and soil pressure work on it for a few seasons. Horizontal cracks, stair-step cracks in brick, and doors that recently started sticking deserve an inspection now, not next year.

Small jobs take 1 to 2 days: crack injection, a few crawl space jacks, or a short run of carbon straps. A typical piering project (7 to 10 piers) takes 2 to 5 days including excavation, pressing, lift, and backfill. Full wall rebuilds with excavation run 1 to 3 weeks. You usually do not need to move out - crews work from outside or the basement - except during major wall replacements.