How Much Does Crawlspace Repair and Restoration Cost?

By Hannah Stephens

October 04, 2024

Compared to the excitement of a kitchen or bathroom renovation, restoring your crawlspace may seem pretty low on your list of home improvement priorities. It's dark, it's poky and you never go down there, so why go to the trouble of sprucing it up?

This May Also Interest You: Crawlspace Repair and Restoration: What Homeowners Need to Know

However, your crawlspace supports the rest of your house, so delaying a crawlspace restoration project could put your entire home at risk. Eventually, crawlspace issues can lead to sagging floors, wall cracks and mold infestations.

What Is Crawlspace Wood Rot?

Over time, moisture can cause the wood in your crawlspace to rot. Without treatment, the rot can spread throughout your crawlspace and cause severe structural problems. Therefore, it's essential to spot and treat the issue as quickly as possible.

Repairing wood rot in your crawlspace involves replacing the rotten parts with fresh wood. Your contractor may also recommend damp-proofing your crawlspace to prevent recurrence. According to Fixr, the cost to repair crawlspace wood rot depends on the scale of the problem, but most homeowners pay between $750 and $5,000 (CAD 1,013 and CAD 6,753).

What Is Crawlspace Joist Repair?

In a foundation crawlspace, floor joists run horizontally along the top of the crawlspace and support the subfloor. Moisture, rot and other common crawlspace issues can cause these joists and their supporting beams to deteriorate. When this happens, you may notice sagging, uneven or springy-feeling floors in your home.

The best repair method depends on the cause and scale of the damage. Your contractor may recommend replacing the joist altogether or performing a "sistering" repair, which involves strengthening the existing joist with a new one to improve stability. You may also need a new support beam if the existing beam is compromised.

How Much Does Crawlspace Joist Repair Cost?

Replacing a single crawlspace joist is relatively affordable at around $100 to $300 (CAD 135 to CAD 405), according to Fixr. However, the costs could mount significantly if you need to replace multiple joists.

Support beams are costlier, with replacements starting from $1,500 (CAD 2,026) for a wooden beam. You could pay up to $5,000 (CAD 6,753) to replace a steel support beam.

How Much Does Crawlspace Leak Repair Cost?

According to HomeGuide, hiring a plumber to diagnose and fix a leak in your crawlspace typically costs between $45 and $150 (CAD 61 to CAD 203) per hour. Depending on the severity of the leak, you may also need to repair water damage to prevent mold and rot.

Fixing a water-damaged crawlspace usually costs between $1,500 and $5,000 (CAD 2,026 and CAD 6,753). Removing water from a severely flooded crawlspace can cost up to $10,000 (CAD 13,506).

Your contractor may recommend installing a vapor barrier to reduce the humidity in your crawlspace and reduce the risk of mold or rot. Installing a crawlspace vapor barrier typically costs between $2 and $4 (CAD 2.70 and CAD 5.40) per square foot. You should expect to pay $1,200 to $4,000 (CAD 1,621 to CAD 5,402) for labor and materials.

More Related Articles:

How Much Does It Cost to Repair or Replace Crawlspace Insulation?

Insulating your crawlspace helps reduce moisture and can make your home more energy-efficient. Installing insulation typically costs $500 to $3,700 (CAD 675 to CAD (4,997), including materials and labor.

How much crawlspace insulation costs depends on the size of your crawlspace and the type of insulation. The most popular options include:

Closed-cell spray foam: $2 to $5 (CAD 2.70 to CAD 6.75) per square foot
Foam board: $1.20 to $3.70 (CAD 1.62 to CAD 5) per square foot
Roll and batt: $0.90 to $1.40 (CAD 1.22 to CAD 1.89) per square foot
Blown-in insulation: $1 to $2.80 (CAD 1.35 to CAD 3.78) per square foot

You should replace your crawlspace insulation if it becomes damp or moldy. Removing existing insulation increases the cost by around $1 to $2 (CAD 1.35 to CAD 2.70) per square foot.

What Is Crawlspace Restoration?

Crawlspace restoration involves cleaning the space and repairing any issues to return it to its original condition. Depending on the condition of your crawlspace, services may include:

Deep cleaning
Mold remediation
Insulation installation
Sump pump installation
Vapor barrier installation
Encapsulation
Pest control
Structural repairs

A home inspector can check your crawlspace's condition and help you determine which restoration services you need. Crawlspace inspections usually cost between $100 and $250 (CAD 135 and CAD 338).

How Much Does Crawlspace Restoration Cost?

The cost of crawlspace restoration depends on the size of your space and its condition. The average crawlspace restoration project costs anywhere from $3,000 to $8,000 (CAD 4,052 to CAD 10,805), although you could pay as little as $500 to $3,000 (CAD 675 to CAD 4,052) to restore a compact crawlspace with minor repairs.

You could pay significantly more if you have an unusually large crawlspace or need to remediate severe damp or structural issues. Restoring a large crawlspace that floods frequently can cost up to $20,000 (CAD 27,012) or more.

All CAD conversions are based on the exchange rate on the date of publication.

Follow us