Maine 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 ME 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
Maine 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
Maine requires sellers to disclose known defects through the Property Disclosure Statement, including radon test results.
Credential note
Maine does not require specific radon licensing. NRPP or AARST certification is recommended.
ME Cost Starting Point
Maine cost range by foundation
Basement
$900-$1600
Use this when the home has a basement or lowest-level slab that supports a standard sub-slab suction system.
Slab-on-Grade
$850-$1500
Slab homes can price differently when finished space, routing, or core drilling complicates the system path.
Crawl Space
$1400-$2550
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. Maine requires sellers to disclose known defects through the Property Disclosure Statement, including radon test results.
Mitigation licensing: No state-specific mitigation license premium is modeled. Maine does not require specific radon licensing. NRPP or AARST certification is recommended.
EPA zone mix in Maine
12
Zone 1
4
Zone 2
0
Zone 3
16 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
Maine 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.
16
Listed
16
Evidence
16
Measured
Best county pages to open first
Cumberland County
Demand cohort local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 43.5% 4.0+
Cumberland County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 43.5% 4.0+ with a local housing base of 149,869 units and a modeled planning range of $900-$1600.
York County
Evidence-backed local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 48.4% 4.0+
York County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 48.4% 4.0+ with a local housing base of 112,660 units and a modeled planning range of $900-$1600.
Penobscot County
Evidence-backed local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 16.4% 4.0+
Penobscot County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 16.4% 4.0+ with a local housing base of 75,119 units and a modeled planning range of $900-$1600.
Kennebec County
Evidence-backed local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 30.3% 4.0+
Kennebec County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 30.3% 4.0+ with a local housing base of 62,778 units and a modeled planning range of $900-$1600.
Androscoggin County
Evidence-backed local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 36.9% 4.0+
Androscoggin County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 36.9% 4.0+ with a local housing base of 49,923 units and a modeled planning range of $900-$1600.
Hancock County
Evidence-backed local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 39.1% 4.0+
Hancock County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 39.1% 4.0+ with a local housing base of 40,298 units and a modeled planning range of $900-$1600.
Aroostook County
Evidence-backed local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 45.1% 4.0+
Aroostook County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 45.1% 4.0+ with a local housing base of 38,440 units and a modeled planning range of $900-$1600.
Oxford County
Evidence-backed local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 43.1% 4.0+
Oxford County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 43.1% 4.0+ with a local housing base of 36,355 units and a modeled planning range of $900-$1600.
Somerset County
Evidence-backed local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 18.8% 4.0+
Somerset County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 18.8% 4.0+ with a local housing base of 29,929 units and a modeled planning range of $900-$1600.
Lincoln County
Cost eligible local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 35.8% 4.0+
Lincoln County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 35.8% 4.0+ with a local housing base of 23,698 units and a modeled planning range of $900-$1600.
Franklin County
Cost eligible local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 29.1% 4.0+
Franklin County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 29.1% 4.0+ with a local housing base of 21,014 units and a modeled planning range of $900-$1600.
Piscataquis County
Cost eligible local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 47.7% 4.0+
Piscataquis County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 47.7% 4.0+ with a local housing base of 14,655 units and a modeled planning range of $900-$1600.
Waldo County
Cost eligible local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 32.1% 4.0+
Waldo County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 32.1% 4.0+ with a local housing base of 22,012 units and a modeled planning range of $900-$1600.
Sagadahoc County
Cost eligible local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 30% 4.0+
Sagadahoc County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 30% 4.0+ with a local housing base of 18,999 units and a modeled planning range of $900-$1600.
Washington County
Cost eligible local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 29.6% 4.0+
Washington County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 29.6% 4.0+ with a local housing base of 21,723 units and a modeled planning range of $900-$1600.
Knox County
Cost eligible local evidence
$900-$1600
CDC EPHT Network Radon Tests from Labs: 29.6% 4.0+
Knox County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 29.6% 4.0+ with a local housing base of 24,331 units and a modeled planning range of $900-$1600.
County estimates
Open a Maine 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 Maine?
Price ranges across Maine 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.