How much does foundation repair cost?

The honest answer is that "foundation repair" covers everything from a $400 crack seal to a $40,000 wall rebuild, so any single number you see online is close to meaningless without knowing your specific problem. What actually determines the cost is the cause and the method the fix requires. Here's how the ranges break down, so you can walk into an inspection knowing roughly where your situation falls.

What drives the price

Before the ranges, it helps to know what moves the number up or down:

• The cause. A cosmetic shrinkage crack is cheap. Active settlement or soil pressure that needs structural work is not.
• The method. Injection is inexpensive; piers, anchors, and excavation cost more because of labor, equipment, and materials.
• Access. A finished basement, tight side yard, or landscaping that has to be worked around adds labor.
• How much of the foundation is affected. One settling corner is a different job than movement along a whole side of the house.

Typical cost ranges by repair type

Crack repair — a few hundred to low thousands

Sealing a non-structural crack in a poured wall with epoxy or polyurethane injection is one of the least expensive foundation repairs, commonly a few hundred dollars per crack. If the crack is structural and needs carbon-fiber reinforcement, the price climbs but usually stays in the low thousands. See crack repair for how the type of crack changes the fix.

Piering and underpinning — the big one, often five figures

When a foundation is settling, contractors stabilize it with steel piers driven to stable soil. Piers are commonly priced per pier, and homeowners often report figures in the range of a few hundred to well over a thousand dollars per pier depending on the type and depth, with slab jobs sometimes quoted higher per pier. Because a settling section usually needs several piers, the total frequently lands in the low-to-mid five figures. This is why "how many piers" is the question that drives the quote. See piering and underpinning.

Bowing wall repair — low to mid thousands

Bracing a bowing wall with carbon-fiber straps is often the most affordable structural fix, in the low thousands. Wall anchors or steel I-beams for a wall that's moved further cost more. The total depends on how many wall sections need bracing. See bowing wall repair.

Waterproofing — priced by the foot

An interior drain system with a sump pump is usually quoted by the linear foot of wall, so a full perimeter costs more than treating one wall. Exterior excavation waterproofing is the most thorough and the most expensive option. See the waterproofing cost guide for details.

Why the online "average" is misleading

National averages lump a $500 crack seal in with a $50,000 rebuild and spit out a middle number that matches almost nobody. Two houses on the same street can have very different bills because one has a single cracked corner and the other has movement along a whole wall. That's also why a trustworthy contractor won't quote a foundation repair over the phone. If someone gives you a firm price before seeing the foundation, treat it with caution.

How to get an accurate number for your home

The reliable path is simple: have a licensed contractor inspect the foundation, identify the cause, and give you a written quote for the specific fix. Get a second opinion on anything large. That's the only way to turn "it depends" into a real number you can plan around.