How much does foundation repair cost?

By repair type: crack injection: $300-$800 per crack. Piering (push or helical piers): $1,000-$3,000 per pier ($8,000-$25,000+ total). Slab jacking: $500-$3,000. Wall anchors/braces: $3,000-$15,000. Foundation replacement: $20,000-$100,000+. Average homeowner: $5,000-$15,000. Factors: severity of damage, type of foundation, number of piers needed, soil conditions, and accessibility. Get 2-3 quotes from structural repair specialists (not general contractors).

Are foundation cracks serious?

Depends on the type: hairline cracks (under 1/16 inch): usually cosmetic. Caused by normal curing and shrinkage. Monitor for growth. Vertical cracks: common from settling. Usually not structural. Can be sealed for waterproofing ($300-$800). Diagonal cracks: may indicate differential settlement. Have evaluated by a structural engineer. Horizontal cracks: most serious. Indicate lateral pressure from soil. Need immediate professional evaluation. Stair-step cracks in brick: indicate foundation movement. When to worry: cracks wider than 1/4 inch. Cracks that are growing. Multiple cracks appearing. Cracks accompanied by other signs (sticking doors, sloping floors). When in doubt: hire a structural engineer ($300-$700 for evaluation). Independent opinion (not tied to a repair company).

Does homeowners insurance cover foundation repair?

Usually not. Standard homeowners insurance excludes: normal settling and earth movement. Damage from poor drainage or water management. Earthquake damage (need separate policy). Insurance may cover: foundation damage from a covered event (burst pipe, fallen tree, fire). Sudden and accidental damage (not gradual). How to check: read your policy exclusions. File a claim if the damage was caused by a covered event. Get an independent structural engineer assessment. Tips: even if not covered, document everything. Some policies have endorsements for foundation coverage (ask your agent). Flood insurance may cover some foundation damage from flooding.

How do I know if I need foundation repair?

Warning signs: cracks in foundation walls (especially horizontal). Cracks in interior drywall (diagonal from door/window corners). Doors or windows that stick, won't close, or swing open. Uneven or sloping floors. Gaps between walls and ceiling/floor. Chimney leaning or separating. Cracks in brick veneer (stair-step pattern). What to do: step 1: hire a structural engineer ($300-$700) for an independent evaluation. Not a foundation repair company (they have incentive to recommend repairs). Step 2: get 2-3 repair quotes. Step 3: address water management issues (gutters, grading, drainage) regardless of structural repairs.

Article

Framing & Structure

Foundation Repair Guide: Types, Cost & Warning Signs

Lumberama Editorial Team, Foundation Repair & Structural Specialists Nov 18, 2026 9 min read

Warning Signs

Exterior signs: Cracks in the foundation (horizontal cracks are more serious than vertical). Cracks in brick or stone veneer. Gaps between the foundation and siding. Doors or windows that stick or won't close properly. Visible leaning or bowing of walls. Gaps around doors or windows. Chimney leaning or separating from the house.

Interior signs: Cracks in drywall (especially diagonal cracks from door/window corners). Uneven or sloping floors. Doors that swing open or won't latch. Gaps between walls and ceiling or floor. Nail pops in drywall. Cracks in tile flooring.

Crack types: Hairline cracks (less than 1/16 inch): usually cosmetic, monitor for growth. Vertical cracks: common, often from normal settling, less serious. Diagonal cracks: may indicate differential settlement. Horizontal cracks: most serious, indicates lateral pressure on walls. Stair-step cracks in brick: indicates settling or movement. Growing cracks: any crack that is getting wider needs professional evaluation.

Repair Types & Cost

Crack repair: Epoxy or polyurethane injection. Cost: $300-$800 per crack. For: non-structural cracks, waterproofing.

Piering (underpinning): Steel push piers: driven to bedrock or stable soil. Cost: $1,000-$3,000 per pier (typically 8-12 piers needed). Total: $8,000-$25,000+. For: settling foundations, sinking foundation. Helical piers: screwed into the ground. Similar cost to push piers. Better for lighter structures or specific soil conditions.

Slab jacking (mudjacking): Pump material under slab to raise it. Traditional mudjacking (cement slurry): $500-$1,500. Polyurethane foam (polyjacking): $1,000-$3,000. For: settled concrete slabs, minor settling.

Wall anchors and braces: For bowing or leaning basement walls. Wall anchors: $500-$1,000 per anchor (need multiple). Carbon fiber straps: $300-$600 per strap. Steel I-beams: $1,000-$2,000 per beam. Total: $3,000-$15,000.

Complete foundation replacement: Rare and expensive. Cost: $20,000-$100,000+. Only for severely compromised foundations.

Prevention

Water management (most important): Maintain gutters and downspouts (extend 4-6 feet from foundation). Ensure proper grading (soil slopes away from foundation). Fix plumbing leaks promptly. Install French drains if needed.

Tree management: Large trees near the foundation can cause issues. Roots draw moisture from soil, causing it to shrink. Keep large trees at least as far from the house as their mature height.

Consistent moisture: In clay soils, extreme wet-dry cycles cause movement. During drought: soaker hose around the foundation can prevent soil shrinkage.

Regular inspection: Check foundation annually for new cracks or changes. Monitor known cracks (mark them with tape and date). Address issues early (small problems become big problems).