Low end
$1,500
Typical range
$1,500 - $15,000
High end
$15,000+
Crawlspace Repair Cost Components
Crawlspace projects typically combine several scopes of work. Understanding each component helps you evaluate what you’re being quoted for.
| Component | Typical Range | Notes |
|---|---|---|
| Individual pier shimming | $150-$400/pier | Existing pier OK but settled |
| Pier replacement | $250-$600/pier | Standard concrete or steel |
| Beam sistering | $50-$150/linear ft | Adding support alongside damaged beam |
| Vapor barrier (ground only) | $500-$2,000 | 6-12 mil poly, basic coverage |
| Full encapsulation | $2,000-$8,000 | Ground + walls + sealed vents |
| Crawlspace dehumidifier | $800-$1,500 | Equipment; plus installation |
| Interior drainage + sump | $2,000-$5,000 | For active water intrusion |
| Pest treatment | $200-$800 | Required before wood replacement |
Project Cost by Scope
| Scope | Typical Total |
|---|---|
| Minor pier shimming only | $500 - $2,000 |
| Structural repair (4-8 piers + beam work) | $2,000 - $6,000 |
| Vapor barrier installation only | $500 - $2,000 |
| Structural + vapor barrier | $2,500 - $7,000 |
| Full encapsulation only | $2,000 - $8,000 |
| Structural + full encapsulation | $4,000 - $12,000 |
| Comprehensive remediation (all scopes) | $8,000 - $20,000 |
What Affects Crawlspace Repair Cost
Crawlspace Size
Vapor barrier and encapsulation costs are largely driven by square footage. A 600 sq ft crawlspace costs half as much to encapsulate as a 1,200 sq ft crawlspace, all else equal.
Crawlspace Clearance
Working in a 24-inch crawlspace is significantly harder (and slower) than a 48-inch crawlspace. Contractors price low-clearance work at a premium because it’s physically demanding and slower.
Active Water Intrusion
If water is entering the crawlspace from the exterior (foundation walls, surface drainage), a vapor barrier alone is insufficient - you need interior drainage and a sump pump. This adds $2,000-$5,000.
Extent of Structural Damage
How many piers need shimming or replacement, how much beam and joist work is needed, and whether the framing has pest damage all drive the structural component of the cost.
Access Difficulty
If the crawlspace access hatch is very small, inconveniently located, or requires tools to open, labor costs increase. Contractors factor in the time to move materials in and out.
Estimating Your Crawlspace Repair Cost
The most reliable way to estimate cost is to have 3+ contractors inspect the crawlspace and provide itemized quotes. Compare:
- What’s included - some quotes bundle structural and encapsulation; others quote separately
- Vapor barrier spec - 6 mil poly vs. 12-20 mil reinforced liner is a significant quality difference
- Warranty - structural work should carry a warranty; encapsulation materials typically carry manufacturer warranties
- Pest treatment - who is responsible for pest treatment, and when?
Avoid quotes that come without a crawlspace inspection - there’s no way to price crawlspace work accurately without seeing what’s inside.