Foundation Repair Cost Calculator

Foundation repair cost calculator: area × (material + labor)

This foundation repair cost calculator turns a contractor’s per-square-foot rates into a budget for your wall. The formula is total = (length × height × material rate) + (length × height × labor rate). With the defaults, a 30 ft crack treated over a 1 ft band at $40 material and $60 labor per sq ft comes to $3,000. Results show total, area, material, and labor.

How the estimate is put together

1. Area. Repair length in feet × repair height in feet.
2. Material. Area × material rate. This covers epoxy, polyurethane, carbon fiber straps, coatings, or whatever the method uses.
3. Labor. Area × labor rate.
4. Total. Material + labor, rounded to whole dollars.

The calculator does not know which repair method you need. Its accuracy depends entirely on the rates you enter, so get them from a quote that describes the actual repair.

Worked examples

1. Default: 30 ft crack band, 1 ft tall

• Area: 30 × 1 = 30 sq ft
• Material: 30 × $40 = $1,200
• Labor: 30 × $60 = $1,800
• Total: $3,000

2. A wall coating quote: 24 ft wall, 8 ft tall, at an example $3 material and $5 labor per sq ft

• Area: 24 × 8 = 192 sq ft
• Material: 192 × $3 = $576
• Labor: 192 × $5 = $960
• Total: $1,536

3. Pier repair priced per unit: 6 piers, at an example $1,000 material and $800 labor each

• Enter length 6, height 1. “Area” becomes 6.
• Material: 6 × $1,000 = $6,000
• Labor: 6 × $800 = $4,800
• Total: $10,800

The rates in examples 2 and 3 are only to show the math. They are not price guidance.

Repair types and how they are usually priced

Repair	What it addresses	How quotes are often expressed
Crack injection (epoxy or polyurethane)	Sealing or bonding a poured-wall crack	Per crack or per linear foot
Carbon fiber or steel straps	Reinforcing a bowing wall	Per strap or per wall
Wall anchors or braces	Holding back a bowing wall	Per anchor or brace
Push or helical piers	Settled footings	Per pier
Waterproofing coating	Damp walls	Per square foot
Slab mudjacking or foam lifting	Sunken slabs	Per job or per area

How to measure for a repair estimate

• Length: follow the crack or damaged section with a tape and record feet.
• Height: for injection, use a narrow band such as 1 ft. For coatings, use the full height being treated.
• Count units: for anchors, straps, or piers, count the units an engineer or contractor specifies.
• Photograph and date the crack. Mark its ends with a pencil and check again in a few months. Growth suggests ongoing movement.

Questions to ask before you sign

Ask what is causing the crack or movement, and how the proposed repair addresses that cause. Ask whether an engineer has reviewed the plan, and whether a permit is needed. Ask what the warranty covers, whether it transfers to a new owner, and what happens if the crack reopens.

Finally, ask for the quote in the same units the calculator uses: square feet, linear feet, or number of units. Enter each bid’s material and labor rates here. When the totals differ a lot, the scopes usually differ too, and that is the conversation to have with each contractor.

Common mistakes

• Budgeting a seal for a moving wall. Sealing a crack does not stop the movement that made it.
• Comparing different methods as if they were the same. Ask each contractor to name the method and the warranty.
• Forgetting drainage. Gutters that dump water at the wall and soil sloping toward the house often drive foundation problems.
• Leaving out access work. Exterior excavation, removing finished walls, and restoring landscaping cost extra.
• Skipping permits. Some structural repairs need a permit; check local code.

Related calculators

For new work rather than repair, the concrete foundation cost calculator and the basement foundation cost calculator price full foundations. Sunken slabs can sometimes be fixed with an overlay; see the concrete resurfacing cost calculator.

Estimates only. A licensed structural engineer should assess any foundation movement before you choose a repair.