Crawl Space Repair Cost
Normal range: $3,000 – $15,000
The encapsulation range reported by HomeGuide, Jan 14, 2026. It is typical, not a limit: HomeGuide lists up to $20,000 for 2,000 sq ft and bigger jobs run higher. Encapsulation only.
Reviewed October 27, 2026 · Every claim sourced, listed at the bottom
At a glance
- HomeGuide lists encapsulation at $3,000 to $15,000; This Old House and Bob Vila list $1,500 to $15,000 with an average near $5,500.
- Per-square-foot rates disagree: $3 to $10, $3 to $7, and $2 to $4 inside one guide.
- Drainage, a dehumidifier, insulation and mold work are separate lines in the guides, with different prices in each.
- We found no independent source for joist, beam or pier repair prices, so none are given.
Typical total, by source
Ranges as published; not averaged. Several sources share data, so they do not confirm each other. Every project is different. These ranges are not a quote.
On this page
The published prices for crawl space work are almost all for one job: encapsulation, which means sealing the space with a vapor barrier and usually adding drainage or a dehumidifier. This page shows what each source says about that, with the date we checked it, where they disagree, and what to look at when you have real bids in hand.
We found no independent published price for structural repairs such as sistering joists, replacing beams or adding piers, so we do not give one.
It is background for reading bids, not a price for your crawl space. Every project is different. These ranges are not a quote.
Yes Home Pros is a directory. We do not repair crawl spaces, and paid placement never changes a rating or badge. See how we list and rank pros. For what causes crawl space problems and how each repair works, read the crawl space repair guide.
The headline range, and who is saying it
| Source | Encapsulation, whole project | Date checked | Note |
|---|---|---|---|
| HomeGuide | $3,000 to $15,000; 1,000 sq ft $3,000 to $10,000; 2,000 sq ft $6,000 to $20,000; $3 to $10 per sq ft | Jan 14, 2026 | Aggregator. |
| This Old House | $1,500 to $15,000; average about $5,500; about $3 to $7 per sq ft | Updated Mar 13, 2026 | Aggregator. One table lists low $3, average $7, high $10. |
| Bob Vila | $1,500 to $15,000; average $5,500; $3 to $7 per sq ft in one section, $2 to $4 in another | Updated Jul 20, 2022 | Older, and it disagrees with itself. |
| A Texas contractor, G.L. Hunt | $1,500 to $12,000, described as hypothetical | 2026 | A contractor’s own page, not independent. |
These are aggregators and one contractor, not government or university data. The same $1,500 to $15,000 range and about $5,500 average appear at two of them, and they may share a source, so agreement is not confirmation.
None of them says how many projects its numbers are based on. Per-square-foot bands overlap but do not match, and a 2,000 square foot crawl space is priced at $6,000 to $20,000 by one guide and at about $6,000 to $14,000 if you apply another’s $3 to $7 band.
Prices by type of work
Guides break encapsulation into pieces. These are the ranges we found, by source. They are not additive and many jobs include only some of them.
| Work | Range reported | Source |
|---|---|---|
| Vapor barrier installed | $2 to $4 per sq ft ($1,200 to $4,000) | HomeGuide |
| Dehumidifier installed | $1,000 to $3,000 | HomeGuide |
| Drainage | $600 to $1,800 | This Old House |
| Interior drain | $800 to $3,000 (HomeGuide); $700 to $5,200 (Bob Vila) | As listed |
| Sump pump | $650 to $1,800 | Bob Vila |
| Insulation | $500 to $3,700 | HomeGuide |
| Mold remediation in a crawl space | $1,500 to $4,000 (HomeGuide); $500 to $4,000 (This Old House) | As listed |
| Inspection | $100 to $250 | HomeGuide |
| Permits | $100 to $250 | This Old House |
Joist, beam and pier repairs are not in the table. The only prices we found for them were on contractor marketing pages, from single regions, so we do not publish them. Their cost depends on access, how much is damaged and the design of whoever specifies the repair, and an engineer is the person to ask for that design.
What changes the price
Where the sources disagree
- Per square foot. $3 to $10 at HomeGuide, $3 to $7 at This Old House, and both $3 to $7 and $2 to $4 inside Bob Vila.
- Totals. The high end is $15,000 in three sources and $12,000 in a contractor’s own page; HomeGuide’s 2,000 square foot range goes to $20,000.
- Mold. $1,500 to $4,000 against $500 to $4,000.
- Interior drain. $800 to $3,000 against $700 to $5,200.
We do not average these. An average of different job definitions is not a number you can use. We also saw aggregator sites with ranges from $5,200 to $22,500 for similar work and some contractor guides with higher averages; we do not cite them because we could not tell how they were produced.
How to compare the bids you get
Get two or three written, itemized bids and compare what each one includes. The FTC advises getting several written estimates, asking why they differ and avoiding full payment up front. Questions that make bids comparable:
- What is being sealed: floor, walls, vents, or all three? How is the barrier attached and seamed?
- Where does water go? Does the price include drainage, a pump or a dehumidifier?
- Is a moisture reading or an inspection included, and what number are they trying to reach?
- Has anyone looked at the floor framing? If wood is damaged, who specifies the repair?
- Does the price include permits, cleanup and insulation?
- What does the warranty cover and exclude, and does it transfer if you sell?
- What are the payment terms?
Sources
Show the 5 sources for this page
- HomeGuide, crawl space encapsulation cost guide (Jan 14, 2026): homeguide.com
- This Old House, crawl space encapsulation cost (updated Mar 13, 2026): thisoldhouse.com
- Bob Vila, crawl space encapsulation cost (updated Jul 20, 2022): bobvila.com
- G.L. Hunt, a Texas contractor’s published cost page (2026), used only as a contractor example.
- Federal Trade Commission, “How to Avoid a Home Improvement Scam” (Jul 2022): consumer.ftc.gov
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Crawl Space Repair FAQs
HomeGuide lists $6,000 to $20,000 for 2,000 square feet. Applying This Old House’s $3 to $7 per square foot gives a lower figure. The two disagree, so get bids.
Both appear. Ask each contractor for the area, what is included and the total.
It may skip drainage, a dehumidifier or insulation, or use a thinner barrier. Ask what is different, in writing.
No. Use them to spot a bid far outside the published ranges, then ask why.