Crawl space repair costs $4,500 to $8,000 for most homes
Angi puts the average at about $6,000. Fixr, counting smaller jobs, says $500 to $7,500 with an average of $4,500. Structural work on joists and beams is $1,000 to $7,500. A vent is $50 to $200. Full encapsulation, a different job, runs $5,000 to $15,000.
Cost by repair and size
| Vent repair | $50 to $200 per vent. |
|---|---|
| Crack repair | $250 to $1,000. |
| Mice removal | $400 to $600, with traps, sealing and a follow up. |
| Mold removal in the crawl space | $500 to $2,000. |
| Insulation | $750 to $3,500 for a 1,500 square foot crawl space. |
| Structural repair, joists and beams | $1,000 to $7,500. One contractor prices support jacks, posts or sister joists at $1,000 to $3,000 per area. |
| By size | About $2,400 to $4,400 for 800 square feet, $4,500 to $8,200 for 1,500, and $7,500 to $14,000 for 2,500. |
| Cleaning | $500 to $4,000. |
What pushes a quote up
| What is wrong | A vent, a crack and a sagging beam are three different price bands. |
|---|---|
| Size | HomeAdvisor puts repairs at about $3 to $5.50 per square foot before restoration work. |
| Access | Labor is 50 to 80 percent of the bill in Angi's data. Low clearance slows everything. |
| Water | Standing water has to be fixed first, or the repair will fail. |
| Hidden damage | Rot and pests often go further than they look from the hatch. |
Crawl space repair cost by region
| Lower cost states | $3,600 to $6,400. Alabama, Arkansas, Indiana, Iowa, Kansas, Kentucky, Mississippi, Missouri, Oklahoma, Tennessee, West Virginia and most rural areas. |
|---|---|
| Average cost states | $4,500 to $8,000. Arizona, Florida, Georgia, Michigan, North Carolina, Ohio, Pennsylvania, Texas, Virginia and most mid size cities. |
| Higher cost states | $5,800 to $10,400. California, Connecticut, Hawaii, Massachusetts, New Jersey, New York, Washington, plus big metros such as Chicago, Denver and Washington DC. |
These rows are our estimate. We took the typical national range and adjusted it for local labor costs, which run about 20 percent lower in the cheapest states and about 30 percent higher in the dearest ones. Humid Southeast states see the most crawl space rot and the most crawl space contractors.
Repair, clean or encapsulate: three different quotes
People searching for crawl space repair often get quotes for three different jobs. Repair fixes something broken: a rotted joist, a sagging beam, a cracked wall, a broken vent. Cleaning removes debris, old insulation, droppings and mold. Encapsulation seals the whole space with a liner, closed vents and a dehumidifier to stop the moisture that caused the damage. A contractor may bundle all three.
That is fine if you need all three, and a waste if you do not. A dry crawl space with one sagging beam needs a support post, not a $10,000 liner. A wet one with rot will rot again after a repair unless the water is fixed. Ask the contractor to price each part on its own line. See our crawl space encapsulation cost page for that job.
Photos, not promises
You probably will not crawl in there yourself. Ask for photos of every problem the contractor lists, with a tape measure in the shot for cracks and sags. Good companies do this without being asked.
Why this costs more in 2026
Lumber, jacks, liners and dehumidifiers all ship by truck, and the crew drives heavy equipment to your house.
The short version is oil. Diesel passed $6 a gallon on the AAA national average for the first time on September 11, 2026. A year earlier it was about $3.70 (CBS 8 reporting AAA). That lands in trip charges, deliveries and anything made from petroleum. In March 2026, construction input prices were up 4.8 percent on the year, the biggest annual gain since January 2023, according to Associated Builders and Contractors, and the Associated General Contractors measured a 37.8 percent one month jump in diesel, the largest since 1990 (Roofing Contractor, April 2026). Quotes are being held open for shorter periods this year, so ask for the expiry date in writing.
How to judge the quote in your hand
- Ask for photos of each problem. Before and after.
- Get repair, cleaning and encapsulation as separate lines.
- Ask what caused the damage. A repair that ignores the cause will fail.
- Check the price per support. If jacks or posts are quoted, get the count.
- Ask about permits for structural work.
Ways to pay less
- Fix the water first. Gutters and grading are cheap.
- Buy only the job you need. Not every repair needs encapsulation.
- Seal vents and gaps against pests while the crew is there.
- Get a second opinion on structural work over $5,000.
What will this cost me?
Pick the job, your state's cost level and the last detail. The estimate updates as you change them.
An estimate built from published 2026 cost guides. It is not a quote. Get a written quote before work starts.
The one business per trade, per town that AI recommends.
When your customers ask an AI which company to call, we get you named, not your competitor. We work and monitor every major engine, ChatGPT, Google's AI Overviews, Gemini, Perplexity, Copilot, Claude, and Grok, so you show up wherever they ask. Fully done-for-you: setup, ongoing optimization, competitor tracking, a live dashboard, and monthly reporting. Backed by our 90-day money-back guarantee.
Book a free 15 minute callNo pitch deck. We run your audit live on the call.Common questions
How much does crawl space repair cost?
About $6,000 on average, with most jobs $4,500 to $8,000, according to Angi.
How much does it cost to fix floor joists in a crawl space?
Structural repairs run $1,000 to $7,500. One contractor prices posts, jacks or sister joists at $1,000 to $3,000 per area.
Is crawl space repair the same as encapsulation?
No. Repair fixes damage. Encapsulation seals the space against moisture and runs $5,000 to $15,000.
How much does crawl space cleaning cost?
$500 to $4,000, depending on what has to come out.
Who should I call for a sagging floor?
A foundation or crawl space contractor, or a structural engineer for an unbiased report.