South Carolina Radon Mitigation Cost by County, Foundation, and Rules
Compare typical local price ranges for basement, slab, and crawl space systems. Use the state-level ranges first, then open your county when you need a local estimate after a confirmed radon result.
Fastest Start
Use ZIP Instead of Scrolling
If you know the property ZIP, jump straight to the right county estimate instead of browsing the full state list.
Cost Basics
Foundation & Result Ranges
Use the national cost guide if you need basement, slab, crawl-space, or 4.0+ result context first.
Validate the Risk
Check SC Radon Levels
If you do not have a confirmed radon result yet, review EPA zone context before you compare mitigation pricing.
Browse Counties
Jump to County Pricing
Open your county if you already know the area and just need a local basement, slab, or crawl-space price range.
Official State Resource
South Carolina radon program and rules
Use the state program link to verify local radon guidance, disclosure language, and contractor credential expectations before you act on an estimate.
Disclosure rule tracked
South Carolina requires sellers to complete a Seller's Disclosure of Property Condition, covering known defects.
Credential note
South Carolina does not require specific radon licensing.
SC Cost Starting Point
South Carolina cost range by foundation
Basement
$860-$1532
Use this when the home has a basement or lowest-level slab that supports a standard sub-slab suction system.
Slab-on-Grade
$814-$1440
Slab homes can price differently when finished space, routing, or core drilling complicates the system path.
Crawl Space
$1352-$2470
Crawl-space jobs can move higher when vapor-barrier sealing, access, and sub-membrane suction add labor.
State rules that can change the quote
Disclosure: Required or commonly expected in this state context. South Carolina requires sellers to complete a Seller's Disclosure of Property Condition, covering known defects.
Mitigation licensing: No state-specific mitigation license premium is modeled. South Carolina does not require specific radon licensing.
EPA zone mix in South Carolina
1
Zone 1
8
Zone 2
37
Zone 3
46 classified counties are used for state-level risk context. EPA zones do not replace a home test, but they help explain why county pages and confirmed 4.0+ results matter before comparing quotes.
Local cost guides
South Carolina evidence-backed cost route
The cost directory follows the same eligibility rule as the county cost pages themselves. State hubs, sitemap candidates, and internal links point at pages Google can actually index.
46
Listed
46
Evidence
46
Measured
Best county pages to open first
Greenville County
Demand cohort local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 19.6% 4.0+
Greenville County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 19.6% 4.0+ with a local housing base of 228,097 units and a modeled planning range of $860-$1532.
Spartanburg County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 19.1% 4.0+
Spartanburg County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 19.1% 4.0+ with a local housing base of 138,058 units and a modeled planning range of $860-$1532.
Lexington County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 12.5% 4.0+
Lexington County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 12.5% 4.0+ with a local housing base of 128,830 units and a modeled planning range of $860-$1532.
York County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 13.6% 4.0+
York County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 13.6% 4.0+ with a local housing base of 115,366 units and a modeled planning range of $860-$1532.
Anderson County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 11.1% 4.0+
Anderson County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 11.1% 4.0+ with a local housing base of 89,805 units and a modeled planning range of $860-$1532.
Pickens County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 23.6% 4.0+
Pickens County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 23.6% 4.0+ with a local housing base of 56,713 units and a modeled planning range of $860-$1532.
Oconee County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 42.6% 4.0+
Oconee County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 42.6% 4.0+ with a local housing base of 41,023 units and a modeled planning range of $860-$1532.
Laurens County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 13.9% 4.0+
Laurens County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 13.9% 4.0+ with a local housing base of 31,421 units and a modeled planning range of $860-$1532.
Richland County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 4.9% 4.0+
Richland County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 4.9% 4.0+ with a local housing base of 182,711 units and a modeled planning range of $860-$1532.
Aiken County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 13.3% 4.0+
Aiken County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 13.3% 4.0+ with a local housing base of 77,577 units and a modeled planning range of $860-$1532.
Cherokee County
Cost eligible local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 13.7% 4.0+
Cherokee County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 13.7% 4.0+ with a local housing base of 24,775 units and a modeled planning range of $860-$1532.
Lancaster County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 13.6% 4.0+
Lancaster County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 13.6% 4.0+ with a local housing base of 41,410 units and a modeled planning range of $860-$1532.
Horry County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 0.9% 4.0+
Horry County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 0.9% 4.0+ with a local housing base of 206,764 units and a modeled planning range of $860-$1532.
Charleston County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 1.5% 4.0+
Charleston County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 1.5% 4.0+ with a local housing base of 202,600 units and a modeled planning range of $860-$1532.
Abbeville County
Cost eligible local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 22.7% 4.0+
Abbeville County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 22.7% 4.0+ with a local housing base of 11,658 units and a modeled planning range of $860-$1532.
Beaufort County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 2% 4.0+
Beaufort County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 2% 4.0+ with a local housing base of 99,281 units and a modeled planning range of $860-$1532.
Dorchester County
Evidence-backed local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 4.8% 4.0+
Dorchester County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 4.8% 4.0+ with a local housing base of 65,088 units and a modeled planning range of $860-$1532.
Newberry County
Cost eligible local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 16% 4.0+
Newberry County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 16% 4.0+ with a local housing base of 18,313 units and a modeled planning range of $860-$1532.
Berkeley County
Cost eligible local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 4% 4.0+
Berkeley County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 4% 4.0+ with a local housing base of 94,468 units and a modeled planning range of $860-$1532.
Florence County
Cost eligible local evidence
$860-$1532
CDC EPHT Network Radon Tests from Labs: 0% 4.0+
Florence County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 0% 4.0+ with a local housing base of 60,896 units and a modeled planning range of $860-$1532.
County estimates
Open a South Carolina county page for local pricing
County pages narrow the state range with local EPA zone context, housing data, state rules, and the foundation scenario you choose.
Why Does Cost Vary in South Carolina?
Price ranges across South Carolina move with local labor rates, permit friction, roofline routing, and foundation type. County pages narrow this down for homeowners comparing basement, slab, or crawl space mitigation after a confirmed radon reading.