The diagnosis is the expensive part — actually, no, the repair is
An engineering inspection is $400–$700. The repair that follows can be $850 or $35,000 depending on what's wrong. The single most useful thing a homeowner can do is get the engineering report before calling repair contractors, because the report dictates scope. Skipping the report and going straight to a "free inspection" from a foundation repair company is how people end up with $18,000 of piers when $2,000 of crack injection would have been adequate.
Repair types and what they cost
- Crack injection (epoxy or polyurethane): $500–$1,200 per crack. For non-structural cracks under 1/4". DIY kits exist ($60) but real injection requires pressure equipment.
- Helical piers: $1,400–$1,800 per pier installed. Used for foundation underpinning when settling is occurring. A typical residential repair needs 6–10 piers; total $9,000–$18,000.
- Push piers: $1,500–$2,000 per pier. Hydraulically driven to bedrock. Requires reachable bedrock (typically under 30 ft).
- Wall stabilization (carbon fiber): $400–$700 per strap, 4–8 straps for a typical bowed wall. Total $3,500–$8,000.
- Wall stabilization (steel I-beams): $700–$1,200 per beam, similar count. Total $5,000–$12,000. Stronger but more invasive.
- Slabjacking / mudjacking: $5–$25 per sq ft of slab raised. For sunken concrete (driveways, garage slabs).
- Polyurethane foam injection: $7–$30 per sq ft. Lighter than mudjacking, less weight on already-troubled soil.
Waterproofing isn't foundation repair, but it's adjacent
Most homeowners conflate the two. Water intrusion can cause foundation problems but isn't itself a foundation repair issue. Solutions include interior French drain + sump pump ($4,500–$8,000), exterior excavation and waterproof membrane ($12,000–$25,000), or yard regrading and downspout extension ($800–$2,500 — try this first). The order of operations is always: divert surface water → fix gutters → grade the yard → then consider waterproofing.
Why "free inspection" companies pitch the maximum scope
Foundation repair is one of the most aggressive sales segments in home services. Inspectors are commissioned. The pitch usually goes: "Catastrophic failure could happen at any time, so we recommend installing piers along this entire wall." Sometimes that's true. Often the engineer's report — which the same company won't pay for — would say crack injection is sufficient. Always get the independent engineering evaluation first.
Regional cost differences
| Metro | Multiplier | Settling repair (8 helical piers) |
|---|---|---|
| New York, NY | 1.42× | $19,170 |
| San Francisco, CA | 1.45× | $19,575 |
| Boston, MA | 1.32× | $17,820 |
| Los Angeles, CA | 1.28× | $17,280 |
| Seattle, WA | 1.26× | $17,010 |
| Washington, DC | 1.24× | $16,740 |
| Chicago, IL | 1.10× | $14,850 |
| Denver, CO | 1.08× | $14,580 |
| Miami, FL | 1.06× | $14,310 |
| Austin, TX | 1.04× | $14,040 |
Frequently asked questions
How serious are foundation cracks?
Vertical hairline cracks under 1/8" are usually cosmetic settling and harmless ($300–$800 to seal). Diagonal cracks wider than 1/4", any horizontal crack, or stair-step cracks in masonry walls indicate structural movement and need an engineering inspection ($400–$700). Don't patch over horizontal cracks — that's how you discover them again at twice the cost.
What does foundation repair actually involve?
For cracks: epoxy or urethane injection, $500–$1,200. For settling: helical or push piers driven to bedrock, $1,400–$1,800 each (typical home needs 4–10). For water: exterior or interior waterproofing membrane and drainage, $4,000–$15,000. For bowing walls: carbon-fiber strap repair ($3,500–$8,000) or steel I-beam supports ($5,000–$12,000).
Will my homeowners insurance cover foundation repair?
Almost never. Standard policies exclude 'earth movement' (settling, heaving, sinking) and seepage. Insurance typically only covers foundation damage from a covered peril (a tree falling on the house, a vehicle impact, a sudden plumbing leak). Always verify with your specific policy before assuming coverage.
Can I sell a house with foundation issues?
Yes, but you must disclose. Documented past repair (with engineer letter and transferable warranty) actually helps buyers — undisclosed issues that turn up in inspection kill deals. Average price hit on a comparable sale is 5–12% if repair is needed, 0–3% if repair is documented and warrantied.
What's the difference between helical piers and push piers?
Helical piers have screw-flight plates and are rotated into stable soil — better in clay and soft soils, $1,400–$1,800 each installed. Push piers are hydraulically driven straight down to bedrock — better when bedrock is reachable (under 30 ft), $1,500–$2,000 each. A geotechnical evaluation should drive the choice, not contractor preference.
How urgent is a wet basement?
Standing water = days, not months. Continuous moisture allows mold colonization within 24–48 hours and can soften adjacent wood framing within weeks. Even seasonal seepage compromises insulation R-value and electrical safety. Address with French drain + sump pump ($4,500–$8,000) or full perimeter waterproofing ($10,000–$25,000).