[ KNX.001 ] KNOXVILLE · MARYVILLE · OAK RIDGE · FARRAGUT EAST TENNESSEE

Crawl space and radon pros for Knoxville and East Tennessee

Know the problem, and the price, before anyone knocks on your door. Wet, moldy, sagging, or sitting on radon: we fix crawl spaces across the Knoxville metro with licensed, insured local crews. You get a written itemized quote up front and a dry, safe crawl space at the end. And because we publish the state's radon data and real local pricing, you'll know exactly what your house needs before anyone quotes it.

606 TN zips of state test data 872 Knox County radon tests 95 counties mapped
Direct answer

KnoxCrawlspace.com is Knoxville's crawl space and radon resource. We maintain the region's radon test data by zip code, publish real local pricing, and run a vetted network of licensed East Tennessee contractors for encapsulation, moisture control, structural repair, mold, and radon work. Tell us the problem and one proven local pro handles it. Your number never goes on a list. Serving Knox, Blount, Anderson, Loudon, and Sevier counties.

02 - THE DATA

We pulled the state's radon numbers so you don't have to.

Tennessee Department of Health test results for 606 zip codes in every county, refreshed with CDC tracking data through 2023. Here's the metro. All readings in pCi/L; the EPA action level is 4.0.

< 2 2–4 4–8 · EPA acts at 4.0 8+

Colored by long-run average, in pCi/L. Hover a county; click for the zip-level map and lookup.

KX.KNOX EPA ZONE 1
KNOX
Knoxville, TN
AVG TEST
3.94
MEDIAN
2.2
MAX READING
103.9
TESTS ON FILE
872
CDC 2023 AVG
2.4
NOTE
Highest reading in the state dataset sits in West Knoxville (37923).
Look up your zip
KX.BLNT EPA ZONE 1
BLOUNT
Maryville, TN
AVG TEST
4.78
MEDIAN
2.6
MAX READING
90.3
TESTS ON FILE
160
CDC 2023 AVG
6.7
NOTE
2023 tests averaged 6.7, the highest in the metro right now.
Look up your zip
KX.ANDR EPA ZONE 1
ANDERSON
Clinton / Oak Ridge, TN
AVG TEST
4.76
MEDIAN
2.7
MAX READING
57.3
TESTS ON FILE
132
CDC 2023 AVG
2.1
NOTE
Oak Ridge housing stock tests hot and often.
Look up your zip
KX.SEVR EPA ZONE 2
SEVIER
Sevierville, TN
AVG TEST
6.51
MEDIAN
3.7
MAX READING
113
TESTS ON FILE
150
CDC 2023 AVG
4.6
NOTE
EPA calls Sevier "moderate." The 2020 compile says the metro's highest long-run average.
Look up your zip
03 - HOW IT WORKS

Straight process. No spam calls.

One contractor per job. Your number never goes on a list.

01

Tell us the problem

About 30 seconds. Photos help. We qualify the details so the pro shows up already knowing the job.

02

We run the checks

License class for the job size, radon data for your zip, and the price range the work should land in.

03

One vetted contractor calls

Licensed for the work, local, and accountable to us for how they treat you. One call, not five voicemails.

04

You stay in control

Written quote, no obligation. Not the right fit? We send the next one and log why.

04 - PROMISES

Three promises. In writing. Every job.

The rules every job in our network runs on. Hold us to them.

01

One-Contractor Promise

Your job goes to exactly one vetted contractor. We never sell a homeowner twice, and we never auction your number to a call center.

02

Licensed-for-the-Job Promise

Knox County requires a Home Improvement license from $3,000 and a full contractor license at $25,000. We check before you ever hear a name.

03

Data-You-Can-Check Promise

Every price range and radon number we publish carries its source: state health data, EPA maps, real local quotes. Check our math anytime.

Common questions

What does crawl space encapsulation cost in Knoxville?

For a typical 1,200 sq ft crawl space: $2–4 per sq ft for a basic vapor barrier, $5–10 per sq ft for a complete system with drainage and a commercial dehumidifier, so most full encapsulations land between $6,000 and $12,000. Our cost guide breaks down what moves the number.

Does my house have a radon problem?

East Tennessee sits on cave-riddled limestone that leaks radon upward, making this one of the more serious radon regions in the country. Knox, Blount, and Anderson counties are all EPA Zone 1. The only way to know your house is a test, but our zip lookup shows what tests near you have found first.

Is this really free? What's the catch?

Free quotes, and no catch. The contractors in our network pay us for the work we send them, the way they'd pay for any advertising, except we hold them to written standards and only put one of them on your job. That's the whole model.

Who are the contractors?

Licensed East Tennessee crawl space and radon companies we've vetted: license class, insurance, response times, and how their past customers actually rate them. Names and license numbers get published on this site as each joins the network.

Where do you operate?

The Knoxville metro: Knox, Blount, Anderson, Loudon, and Sevier counties: Knoxville, Maryville, Oak Ridge, Farragut, Clinton, Sevierville, and everywhere between.

[ KNOX CRAWL SPACE · EAST TENNESSEE ]

Find out what your crawl space actually needs.

Crawl space problems don't hold still. Moisture compounds, rot spreads, and the prep work on the eventual quote grows with it. Thirty seconds now gets you a licensed local pro, an honest itemized quote, and no obligation.

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Free quotes · No obligation · One contractor, never a list

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