Crawl space repair costs $2,500 to $8,000 on HomeGuide’s repair and restoration range, with a published national average of $5,500 (February 2026)1. Angi and HomeAdvisor both publish a typical repair range of $4,500 to $8,000 with a $6,000 average23 — the two are corporate siblings, and matching figures alone don’t establish independent corroboration. Scope differs by page: HomeGuide covers repair and cleaning together, while Angi and HomeAdvisor label their pages for repair. Figures below are the latest published data from each source.
Cost by repair type
All three publishers price the individual repairs. One scope note: their tables publish average or typical cost figures without specifying units for each row, so treat them as published costs rather than verified whole-project totals; explicit units (per pier, per square foot, per beam, per vent) are as labeled123:
| Repair | HomeGuide | Angi | HomeAdvisor |
|---|---|---|---|
| Beam replacement | $1,500–$4,000 | $1,500–$5,000 | $1,500–$5,000 per beam |
| Crack repair (minor) | $250–$800 per crack | $250–$1,000 | $250–$1,000 |
| Crack repair (major) | — | $3,000–$10,000 | — |
| Foundation repair / underpinning | $2,500–$8,000 | $3,000–$15,000 | $3,000–$15,000 |
| Mudjacking | $2,000–$6,000 | $500–$2,000 | $500–$2,000 |
| Wall stabilization | $5,000–$10,000 | $6,000–$12,000 | — |
| Insulation replacement | $500–$3,700 | $500–$4,000 | $500–$4,000 |
| Vapor barrier | $1,200–$4,000 | $1,000–$3,000 | $1,000–$3,000 |
| Mold removal | $500–$6,000 | $1,000–$6,000 | $1,000–$6,000 |
| Water damage repair | $1,500–$5,000 | — | $2,000–$10,000 |
| Drainage system | $800–$3,000 | $1,500–$15,000 | $1,500–$15,000 |
| Waterproofing / encapsulation | $1,500–$15,000 (encapsulation) | $1,500–$15,000 | $1,500–$15,000 |
| Pest & rodent control | $200–$4,000 | — | $200–$4,000 |
| Dehumidifier installation | — | $1,500–$3,000 | — |
| Vent repair or sealing | $150–$450 | — | — |
Cost by crawl space size
Angi and HomeAdvisor put crawl space repair at $3 to $5.50 per square foot on average and publish identical per-size ranges — corporate siblings, and matching figures alone don’t establish independent corroboration23:
| Crawl space size (sq ft) | Typical repair cost (Angi & HomeAdvisor) |
|---|---|
| 800 | $2,400–$4,400 |
| 1,000 | $3,000–$5,500 |
| 1,500 | $4,500–$8,200 |
| 2,000 | $6,000–$11,000 |
| 2,500 | $7,500–$14,000 |
HomeGuide does not publish a per-size table for crawl space repair.
Foundation repairs inside the crawl space
HomeGuide prices pier and beam replacement at $1,000 to $2,000 per pier and crack repair at $250 to $800 per crack, with mudjacking at $2,000 to $6,000 and stabilizing foundation walls at $5,000 to $10,0001. Angi prices underpinning at $1,000 to $3,000 per pier or $3,000 to $15,000 total, minor cracks at $250 to $1,000 and major structural cracks at $3,000 to $10,000, with mudjacking at $500 to $2,000 and wall stabilization via tiebacks at $6,000 to $12,0002. HomeAdvisor puts foundation issues at $3,000 to $15,000 or more, minor crack repair at $250 to $1,000, and mudjacking at $500 to $2,0003. Mudjacking is one row where the publishers diverge: HomeGuide’s $2,000 to $6,000 against $500 to $2,000 from both Angi and HomeAdvisor, presented as published. See our foundation repair cost guide for the wider breakdown.
Moisture work: vapor barriers, waterproofing and encapsulation
Replacing a crawl space vapor barrier costs $2 to $4 per square foot installed, or $1,200 to $4,000 on average, per HomeGuide, which puts the barrier plastic alone at $0.15 to $0.50 per square foot before installation1. Angi and HomeAdvisor both publish installed vapor barrier replacement at $1,000 to $3,00023. For readers pricing materials themselves, Home Depot’s vapor barrier insulation category shows current retail sheeting prices. Full encapsulation runs $1,500 to $15,000 across all three publishers123 — see our crawl space encapsulation cost guide. HomeGuide prices waterproofing at $2,000 to $6,000 and a drainage system at $800 to $3,0001, while Angi and HomeAdvisor both publish drainage at $1,500 to $15,000 and waterproofing at $1,500 to $15,000 depending on scope23.
Cleaning and mold
HomeGuide’s cleaning figures: basic cleaning costs $500 to $2,000, mold removal limited to the crawl space runs $500 to $4,000 (or $15 to $30 per square foot), and mold removal that includes air ducts, walls and contaminated insulation runs $2,000 to $6,0001. Angi and HomeAdvisor both publish crawl space mold removal at $1,000 to $6,00023 — see our mold remediation cost guide. HomeGuide also prices minor pest and rodent removal at $200 to $700, rising to $1,500 to $4,000 for extensive infestations with cleaning and sealing1.
Labor, access and inspection
Angi puts labor at 50% to 80% of a crawl space repair total, or $2,000 to $6,500 in most cases, with costs climbing for excavation work and tight access2. HomeAdvisor likewise notes contractors charge an additional fee for crawl spaces under three feet high3. A crawl space inspection costs $100 to $250, per HomeGuide, with radon, mold or asbestos testing adding $100 to $3001. HomeGuide prices crawl space vents at $15 to $150 per vent installed and vent sealing at $150 to $4501.
Repair vs. replacement
Angi compares repair totals of $4,500 to $8,000 against a full crawl space replacement at $20,000 to $40,000, and presents repair as the more affordable path in almost all cases — its own framing, attributed2.
Permits
Whether a crawl space repair needs a permit depends on your municipality and the scope of work, so confirm with your local building authority before the project starts.
Related cost guides
Start with crawl space encapsulation cost, then compare crawl space insulation, foundation repair, mold remediation and basement waterproofing.
The bottom line
Budget $2,500 to $8,000 for crawl space repair and restoration on HomeGuide’s figures, or $4,500 to $8,000 on the typical range Angi and HomeAdvisor both publish. The repair type sets the price far more than the square footage alone, and moisture fixes like vapor barriers and drainage usually travel with the structural work. Get an inspection first — at $100 to $250, it prices the actual problem before you commit to a repair quote.
*National and average figures are each publisher’s own published data. Sources (each fetched and read October 26, 2026; figures are each publisher’s latest published data):
1. HomeGuide, “How Much Does Crawl Space Repair and Cleaning Cost?” (February 5, 2026) — homeguide.com/costs/crawl-space-repair-cleaning-cost
2. Angi, “How Much Does Crawl Space Repair Cost?” (updated October 8, 2026) — angi.com/articles/crawl-space-repair-cost.htm
3. HomeAdvisor, “How Much Does It Cost to Repair a Crawl Space?” (updated June 20, 2026) — homeadvisor.com/cost/foundations/crawl-space-repair-and-clean
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