Foundation & Basement Repair Costs (2026) — Independent Cost Data

Start with the number

Most people arrive here after a contractor said something expensive, or after finding a crack and searching at an unreasonable hour. Both are best answered the same way: find out what the work should cost, then decide.

Common foundation and basement repair costs, US national, 2026
Line item	Typical range	Unit	What drives it
Foundation crack injection	$350 – $900	per crack	The most common foundation bill
Steel push pier	$1,250 – $2,400	per pier	A settled corner needs 4–6
Bowing wall, carbon fiber	$2,500 – $7,000	per wall	Bow under 2 inches
Basement waterproofing, interior	$2,300 – $7,500	per basement	Drain tile plus sump pump
Crawl space encapsulation	$3,200 – $9,500	per project	Barrier, sealing, dehumidifier
Structural engineer’s report	$450 – $600	per visit	Independent of any contractor

Source: Compiled from published 2025–2026 contractor cost datasets and rate sheets, normalized to installed prices including labor. Metro-market labor runs 15–25% above these figures. · Last reviewed July 30, 2026 · Reference data · How we compile these figures

Open the cost calculator

Every figure we publish is collected on one page in the full cost dataset — free to quote, with sources and a review date.

Foundation repair

Most homeowners pay $2,300 – $7,100 for foundation repair, with a national average around $4,850.

Foundation repair cost Most homeowners pay $2,300 – $7,100 for foundation repair, with a national average around $4,850. Cost calculator Estimate what your foundation repair should cost before a contractor names a price. Foundation crack repair cost Sealing a non-structural foundation crack costs $350 – $900 with epoxy or polyurethane injection. Foundation settlement repair cost Repairing genuine foundation settlement costs $5,000 – $30,000, and the figure is set almost entirely by how many piers the affected footing needs. Underpinning cost Underpinning is priced per pier: $1,250 – $2,400 for steel push piers and $1,400 – $3,100 for helical piers. House leveling cost Leveling a pier and beam house costs $3,500 – $12,000; leveling a slab home runs $10,000 – $30,000 because it requires underpinning rather than shimming. Pier and beam foundation repair cost Repairing a pier and beam foundation costs $4,000 – $12,000 for a typical job. Slab foundation repair cost Slab foundation repairs run $2,500 – $10,000 for most homes, though the range is wide because it covers two very different jobs: lifting a sunken slab back into place ($700 – $2,100 per section) and underpinning a slab whose soil has failed ($1,250 – $3,100 per pier).. Mudjacking cost Mudjacking — pumping a cement slurry under a sunken slab to lift it — costs $3 – $6 per square foot, or roughly $700 – $2,100 for a typical section. Concrete foundation repair Poured concrete fails differently from block, and the difference decides the repair. Foundation wall repair Foundation wall repair spans a $350 crack injection and a $40,000 rebuild, and the deciding question is what the wall is actually doing: holding still, leaking, or moving.

Basement

Basement repairs run from a $350 crack injection to $15,000+ for stabilizing a bowing wall.

Basement repair cost Basement repairs run from a $350 crack injection to $15,000+ for stabilizing a bowing wall. Basement waterproofing cost Interior waterproofing — drain tile plus a sump pump — costs $2,300 – $7,500 for most basements ($65 – $130 per linear foot). Waterproofing calculator Estimate what waterproofing your basement should cost before a contractor names a price. Basement crack repair cost Injecting a basement wall crack costs $350 – $900; a floor slab crack runs $500 – $1,600, mostly because flooring has to come up and go back down. Bowing basement wall repair cost How far the wall has moved decides both the method and the bill. Foundation leak repair cost Sealing a single leaking crack costs $350 – $900. Wet basement repair cost The cost of drying a basement depends entirely on where the water comes from, and that diagnosis is free. Water in basement Every fix for a wet basement costs a different amount, and which one you need is decided by where the water enters — not by how much of it there is. Flooded basement cleanup Professional flood cleanup costs $3,000 – $10,000 for a typical basement; clean water and a fast response can put a determined homeowner at $500 – $2,000. Sump pump installation cost Installing a sump pump in a new pit costs $1,000 – $3,500 including breaking the slab, the basin and discharge plumbing. Sump pump replacement Swapping a pump into an existing pit costs $400 – $1,200 installed, or $150 – $600 in parts if you do it yourself — a genuinely realistic afternoon job. Sump pump repair Most sump pump repairs cost $65 – $550, and the most common failure — a stuck or worn float switch — costs $15 – $50 in parts. Egress window cost A new egress window costs $3,000 – $6,500 installed — cutting the foundation wall, the window itself, the well and the drainage. Egress window size The widely adopted IRC standard asks for 5.7 square feet of net clear opening, at least 24 inches high, at least 20 inches wide, with the sill no more than 44 inches above the floor. Radon mitigation cost A radon mitigation system costs $800 – $2,500 installed, averaging around $1,500.

Crawl space

Full crawl space encapsulation costs $3,200 – $9,500 for most homes — about $3 – $7 per square foot with a quality vapor barrier, sealed vents and a dehumidifier.

Crawl space encapsulation cost Full crawl space encapsulation costs $3,200 – $9,500 for most homes — about $3 – $7 per square foot with a quality vapor barrier, sealed vents and a dehumidifier. Crawl space encapsulation cost calculator Estimate what encapsulating your crawl space should cost before a contractor names a price. Crawl space repair cost Crawl space repairs run $1,500 – $15,000, spanning jobs as different as replacing a rotted joist and re-supporting a sagging floor. Crawl space waterproofing cost Waterproofing a crawl space costs $2,000 – $8,000 for most homes. Crawl space mold removal Professional crawl space mold remediation costs $1,500 – $6,000. Diy crawl space encapsulation Encapsulating a crawl space yourself costs $1,200 – $3,500 in materials against $3,200 – $9,500 professionally installed — a real saving of several thousand dollars for physically demanding but technically simple work.

Diagnose the problem

Foundation trouble rarely announces itself with one dramatic crack.

Signs of trouble Foundation trouble rarely announces itself with one dramatic crack. Types of foundation cracks Foundation cracks come in six patterns, and the pattern is the diagnosis: vertical and hairline cracks are usually shrinkage; diagonal cracks hint at uneven settling; horizontal and stair-step cracks mean soil pressure or movement and deserve an engineer. Foundation crack Most foundation cracks are concrete doing what concrete does — shrinking as it cures and relieving that tension somewhere. Crack in foundation Take a breath: most foundation cracks are harmless concrete shrinkage. Crack in foundation wall What your foundation wall is made of changes both the diagnosis and the repair. Horizontal crack in foundation This is the one crack pattern where width does not decide seriousness. Hairline cracks A hairline crack — under 1/16 inch, about the width of a credit card edge — in poured concrete is the most common non-problem in home ownership. Foundation crack repair Most foundation cracks are sealed in an afternoon with epoxy or polyurethane injection — $350 – $900 done professionally, $60 – $150 as a DIY kit. House settling Every house settles. Normal settling cracks Normal settling cracks are thin (under 1/8 inch), vertical or slightly diagonal, and stop growing once the house finishes its early compression — usually within three years of construction. Foundation problems vs settling One word separates the two: progression. Insurance coverage Usually no — and it is better to know that before you file.

Hiring a contractor

We publish no ranked list of foundation repair companies, and that is deliberate — any such list on a site paid by contractors is an advertisement wearing a lab coat.

Best foundation repair companies We publish no ranked list of foundation repair companies, and that is deliberate — any such list on a site paid by contractors is an advertisement wearing a lab coat. Structural engineer for foundation repair A structural engineer inspection costs $450 – $600 and is the only opinion in the foundation repair process that earns nothing from the repair. Basement waterproofing company Waterproofing companies mostly sell what they install, which means the system you are offered often reflects the truck outside more than the water in your basement. Crawl space encapsulation contractors There is one question that sorts encapsulation quotes faster than any other: is the dehumidifier a separate line item? A bid without one is a vapor barrier with better marketing, and the difference is roughly $1,300 – $2,800 of equipment that decides whether the job works at all..

Repair methods

Eight methods cover essentially all residential foundation repair, and each one solves a specific problem.

Types of foundation repair Eight methods cover essentially all residential foundation repair, and each one solves a specific problem. How foundation repair works From first inspection to final backfill, a structural foundation repair runs through seven stages over three to seven days. Push piers A push pier is a steel tube driven straight down beneath the footing, using the weight of your house as the reaction force. Helical piers A helical pier is a steel shaft with welded plates that is screwed into the ground like an oversized auger until it reaches soil that can carry load. Steel vs concrete piers Steel piers cost $1,250 – $3,100 each and are driven until they refuse against competent soil. Pier and beam vs slab The difference that matters most to a homeowner arrives years after construction: repairability. Slab jacking Slab jacking lifts a sunken concrete slab by injecting material into the void beneath it through holes about the size of a coin.

Equipment & materials

The dehumidifier that fails in a basement is usually the one bought on capacity alone.

Best dehumidifier for basement The dehumidifier that fails in a basement is usually the one bought on capacity alone. Crawl space dehumidifier A crawl space runs colder and damper than a basement, and it is a place nobody checks. Best sump pump A sump pump is a component whose failure floods your basement, and the part that fails most often is not the motor — it is the switch. Battery backup sump pump The case for a backup is simple arithmetic: the storms that overwhelm a sump pump are the storms that knock out power. Foundation crack repair kit A DIY injection kit genuinely works — on a clean, accessible, non-structural vertical crack in poured concrete, and it saves you roughly $300 – $750. Basement vapor barrier Thickness gets all the attention and seams decide the outcome. Radon test kit Testing costs $15 – $50 and mitigation costs $800 – $2,500, which makes this the clearest sequence in home maintenance: test first, and only then decide.

Why an independent cost guide exists

Almost every well-ranked page about foundation repair costs is published by someone who repairs foundations. That does not make those pages dishonest, but it does make them structurally incapable of telling you the most valuable thing: when not to spend money.

So that is what this site is for. We publish the unit prices contractors bid from, we say plainly when a hairline crack needs nothing, and we recommend an independent structural engineer over a free inspection every time the job passes about $5,000 — even though an engineer frequently comes back with a smaller scope than the free inspection proposed.

When you do decide to hire someone, we can connect you with licensed local contractors, and they pay us a referral fee for the introduction. That fee is disclosed on every page it appears on, it doesn't change your price, and it has never changed a number in a table. Details in how we make money and our editorial policy.

Who writes this

Cost data across all 63 guides is compiled by Dana Keller (14 years estimating structural repair) and reviewed for technical accuracy by Marcus Oyelaran, PE, licensed structural engineer, before publication and at every update. Every page carries its review date, and every table carries its source.

The steady voice before an $8,000 decision.