Start by documenting it
Track where it appears, its timing, any tie to weather, and whether it's changing. Photos and basic measurements make the first conversation more useful.
Read the local context
Get underneath before anything is quoted, because what is actually down there decides most of the scope. Note the depth and how much of the space can be reached, the state of any ground cover, whether the insulation is sagging or stained, and whether the ductwork is intact. Condensation on framing with no standing water points somewhere quite different from a wet floor. Then look outside at where the lot falls and where the downspouts end, since exterior drainage usually has to be settled before sealing is worth doing.
Ask what will be hidden
Because the ground here shifts between Piedmont clay and sandier fill, a solid plan has to track drainage paths, standing water, liner anchoring, termite-inspection clearance, air sealing, dehumidifier placement, and the state of the wood framing before any product gets specified. Ask the scope to document what gets checked and prepped now, since none of it will be visible once the job is finished.
Weigh full proposals, not totals
Look at protection, access, materials, permits, testing, cleanup, restoration, exclusions, warranties, and change-order terms.
What official local sources add
The flood mapping is worth pulling before this work is scoped, and for a specific reason: because Macon-Bibb publishes it parcel by parcel across the Ocmulgee watershed, it will tell you whether this property in particular has mapped exposure rather than whether the neighborhood does. That matters because sealing a crawl space assumes the space stays dry, and a parcel with mapped risk may need the exterior drainage and the ground cover specified quite differently. The county also notes those maps inform remodeling requirements, so they reach permitting as well as diagnosis.
Sources were reviewed June 20, 2026. Confirm parcel-specific flood zones, historic-district status, permits, and current requirements with the relevant authority before authorizing work.