Most calls start with a floor that's cold underfoot all winter, a room that never warms up, or a power bill that keeps climbing. Under the house we usually find batts sagging off the joists, gaps around pipes and ducts, and framing that's been damp. Which fix makes sense depends on what's down there, so I look before I suggest anything.
The price moves with the size of the crawl space, how tight it is to work in, whether old or wet insulation has to come out, and whether we insulate the walls or the floor. The schedule turns on how dry the space is, because moisture problems get fixed before any insulation goes in, and on whether a permit is needed. Your written estimate lays out each line, and I walk you through it.
Crawl space work sometimes grows into a bigger project once moisture repairs or other rooms get added. North Carolina law requires a general contractor's license from the state licensing board when a project's total cost reaches $40,000 or more, so on a job that size, that license is the first thing to ask any contractor about.