Replacing a beam in a crawl space can look like one repair from upstairs, but the price changes fast once access, moisture, temporary support, posts, pads, joists, and leveling are included.
Use this calculator to get a planning range before comparing contractor quotes. It is not a contractor bid. It helps show whether the likely cost is only the beam, or whether the surrounding crawl-space support system is part of the job.
Estimate your crawl-space beam replacement cost
How this estimate works
The calculator starts with the beam length and replacement scope, then adjusts the planning range for crawl-space access, temporary support, posts, piers, pads, joists, leveling, moisture, engineering, and regional labor conditions.
When beam replacement needs diagnosis first
Beam replacement should not be treated as a simple swap when the floor is moving, the crawl space is wet, posts are leaning, pads are weak, joists are damaged, or the house needs leveling. Those conditions change both the price and the repair sequence.
What changes the price most
- How many linear feet of beam or girder are affected
- Whether temporary support or staged shoring is needed
- Whether posts, piers, pads, or soil bearing need correction
- Whether joists are damaged near the beam
- Whether floor leveling is part of the repair
- Whether moisture caused the beam problem
- How tight the crawl-space access is
Do not compare beam replacement quotes by price alone
One quote may include a short beam repair. Another may include temporary support, beam replacement, new posts, pads, joist sistering, leveling, drainage, cleanup, and an engineer’s recommendation. Those are not the same job.