Guide · checked Nov 13, 2026
How to compare crawl space quotes
Crawl space quotes for the same house can be thousands of dollars apart because they include different work. Put them side by side, line by line, before you compare the totals.
How this works: Chattanooga Crawl Space Quotes is a free referral service, not a crawl space contractor. We pass your request to independent local crawl space pros, who may pay us for the referral. They quote, schedule and do the work; check their insurance before you hire. More about us.
What people around here run into
In r/Chattanooga threads, one homeowner had $7,500 and $12,500 quotes for the same crawl space (the second added drainage and a sump), with replies citing figures from about $1,000 to $60,000. Another got a $10,000 quote from one company while a second said it couldn't do the job at all because the foundation was stacked stone. Unusual foundations and low clearance narrow the field, so it's worth asking more than one company.
The line-by-line checklist
| Line | What to compare |
|---|---|
| Water | Where water enters, and what fixes it (gutters, grading, interior drain, sump). Where the sump discharges. |
| Cleaning first | Removal of old plastic, wet insulation and debris; mold treatment and how it is removed. |
| Liner | Thickness (mil), reinforced or not, how far up the walls, how seams and piers are sealed. |
| Vents and gaps | Which vents are sealed and how; rim joist and door sealing. |
| Drying method | Dehumidifier capacity (pints per day) and drain, or supply air, or exhaust fan. The 2018 IRC needs one of these in a sealed crawl space. |
| Insulation | Walls or floor, type and thickness. |
| Structural | Number and type of supports or beams, footings, engineer letter. |
| Permit | Who pulls it and whether its fee is included. |
| License | Tennessee Home Improvement license for $3,000 to $24,999 jobs in Hamilton County (contractor license at $25,000+); Signal Mountain Builders License on the mountain. |
| Warranty | What is covered (liner, dehumidifier, labor), for how long, and what voids it. |
| Termites | Effect on your termite contract and inspections. |
Check the totals against published ranges
Angi's 2026 national average for encapsulation is $5,500 (most pay $5,000 to $15,000); HomeGuide's is $3 to $10 per square foot. HomeGuide's own question list for contractors includes "Will encapsulation affect my termite warranty or inspections?" and "Do you handle permits and inspections?". Use the cost guide and estimator to see where each quote lands.
Check the company
- Look up the license with the Tennessee Board for Licensing Contractors. A Home Improvement license comes with a $10,000 surety bond plus liability and workers' comp insurance.
- If termite treatment is part of it, the Tennessee Department of Agriculture says to look for a charter number on the vehicle and ask to be shown the termites or damage before signing.
- Get the final scope, price, payment schedule and warranty in writing.
Pressure is a signal
A "today only" price on a five-figure job is a reason to slow down, not speed up. A real moisture problem will still be there next week, unless water is actively coming in; then deal with that part first.
Want another quote to compare?
One short form. Independent local pros contact you. Free, no obligation.
Sources
- r/Chattanooga, "Crawlspace advice" (July 26, 2024): a homeowner's two quotes, $7,500 and $12,500
- r/Chattanooga, "Crawl space encapsulation recommendations" (Sept 4, 2020): stacked stone foundation
- ICC, 2018 International Residential Code, Chapter 4 (R408.3 Unvented crawl space)
- Angi, How Much Does Crawl Space Encapsulation Cost? (updated Oct 28, 2026)
- HomeGuide, Crawl Space Encapsulation Cost (Jan 14, 2026)
- Tennessee Board for Licensing Contractors, Home Improvement License
- Town of Signal Mountain, Permits for Residential Construction (rev. Aug 2026, PDF)
- Tennessee Department of Agriculture, Pesticide Consumer Tips
Prices are national ranges published by the sources above, not quotes. Your price depends on the system, access and timing; local companies quote after seeing the job.