Foundation crack repair
Some cracks are cosmetic; others are signs of movement. Here's how to tell the difference and what repairs usually cost.
HomeRelay Pros is an independent homeowner resource and referral service. We are not a foundation repair contractor and do not perform foundation repair or structural work. Paid referrals through a partner network. The recipient confirms your service, ZIP, availability and terms; a call does not guarantee a local provider or appointment.
Cracks and visible movement
Prepare photos and a history of changes for a professional assessment. An image alone cannot diagnose the cause.
Explore this service guide →AI-generated service illustration; not a provider or customer project.
Which cracks matter
- Hairline vertical cracks in poured walls: often shrinkage, usually cosmetic
- Cracks wider than about 1/8 inch or growing over time
- Horizontal cracks in basement walls (can mean soil pressure)
- Stair-step cracks in block or brick
- Cracks that leak water
How cracks are repaired
Non-structural cracks in poured concrete are often sealed with epoxy or polyurethane injection, which also stops leaks. If the crack is a symptom of settling or wall movement, the provider will typically recommend stabilizing the structure first, with piers, wall anchors or braces, so the crack doesn't reopen.
Monitor before and after
Marking the ends of a crack and dating it, or taking photos with a ruler, helps you and the provider see whether it's moving.
Typical cost
| Job | Typical range |
|---|---|
| Crack injection (per crack) | $300 – $800 |
| Several cracks / larger wall | $800 – $2,500 |
| Structural repair if movement is found | Varies — see piering |
Rough national ranges for planning only. Your price depends on your home, materials and local rates; the provider gives the actual quote.
Worried about a crack? Call for an evaluation.
Tell the provider what you are seeing and your ZIP code. Pricing and timing come from them.
Questions to ask the provider
- Is this crack cosmetic or a sign of movement?
- Will injection alone fix it, or does the structure need stabilizing?
- What warranty do you offer, and is it transferable?
Frequently asked questions
Are hairline cracks in a foundation normal?
Often yes, especially in new concrete. Watch for width, growth, and related symptoms like sticking doors.
Can I seal foundation cracks myself?
Small cosmetic cracks can be sealed with DIY kits, but if the crack is wide, horizontal or growing, have it evaluated first.
Related services
City information and eligibility
These guides do not guarantee local provider availability. Tennessee foundation referrals are excluded.