Oregon 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 OR 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
Oregon 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
Oregon requires sellers to complete a Seller's Property Disclosure Statement, which includes environmental hazards.
Credential note
Oregon does not require specific radon licensing. NRPP or AARST certification is recommended.
OR Cost Starting Point
Oregon cost range by foundation
Basement
$975-$1727
Use this when the home has a basement or lowest-level slab that supports a standard sub-slab suction system.
Slab-on-Grade
$918-$1612
Slab homes can price differently when finished space, routing, or core drilling complicates the system path.
Crawl Space
$1490-$2700
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. Oregon requires sellers to complete a Seller's Property Disclosure Statement, which includes environmental hazards.
Mitigation licensing: No state-specific mitigation license premium is modeled. Oregon does not require specific radon licensing. NRPP or AARST certification is recommended.
EPA zone mix in Oregon
0
Zone 1
21
Zone 2
15
Zone 3
36 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
Oregon 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.
36
Listed
36
Evidence
36
Measured
Best county pages to open first
Multnomah County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 33.1% 4.0+
Multnomah County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 33.1% 4.0+ with a local housing base of 363,661 units and a modeled planning range of $975-$1727.
Washington County
Demand cohort local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 10.1% 4.0+
Washington County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 10.1% 4.0+ with a local housing base of 237,586 units and a modeled planning range of $975-$1727.
Clackamas County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 18% 4.0+
Clackamas County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 18% 4.0+ with a local housing base of 170,723 units and a modeled planning range of $975-$1727.
Marion County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 26% 4.0+
Marion County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 26% 4.0+ with a local housing base of 129,065 units and a modeled planning range of $975-$1727.
Yamhill County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 26.2% 4.0+
Yamhill County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 26.2% 4.0+ with a local housing base of 40,239 units and a modeled planning range of $975-$1727.
Columbia County
Cost eligible local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 36.8% 4.0+
Columbia County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 36.8% 4.0+ with a local housing base of 21,773 units and a modeled planning range of $975-$1727.
Union County
Cost eligible local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 42% 4.0+
Union County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 42% 4.0+ with a local housing base of 11,694 units and a modeled planning range of $975-$1727.
Hood River County
Cost eligible local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 30.8% 4.0+
Hood River County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 30.8% 4.0+ with a local housing base of 10,131 units and a modeled planning range of $975-$1727.
Polk County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 25.2% 4.0+
Polk County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 25.2% 4.0+ with a local housing base of 33,916 units and a modeled planning range of $975-$1727.
Lane County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 9.1% 4.0+
Lane County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 9.1% 4.0+ with a local housing base of 166,750 units and a modeled planning range of $975-$1727.
Umatilla County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 11.8% 4.0+
Umatilla County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 11.8% 4.0+ with a local housing base of 31,264 units and a modeled planning range of $975-$1727.
Clatsop County
Cost eligible local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 40% 4.0+
Clatsop County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 40% 4.0+ with a local housing base of 23,060 units and a modeled planning range of $975-$1727.
Benton County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 13.1% 4.0+
Benton County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 13.1% 4.0+ with a local housing base of 40,092 units and a modeled planning range of $975-$1727.
Baker County
Cost eligible local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 37.5% 4.0+
Baker County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 37.5% 4.0+ with a local housing base of 8,671 units and a modeled planning range of $975-$1727.
Jackson County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 5.3% 4.0+
Jackson County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 5.3% 4.0+ with a local housing base of 96,286 units and a modeled planning range of $975-$1727.
Deschutes County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 3.8% 4.0+
Deschutes County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 3.8% 4.0+ with a local housing base of 94,911 units and a modeled planning range of $975-$1727.
Linn County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 9.5% 4.0+
Linn County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 9.5% 4.0+ with a local housing base of 52,145 units and a modeled planning range of $975-$1727.
Klamath County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 5.3% 4.0+
Klamath County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 5.3% 4.0+ with a local housing base of 32,864 units and a modeled planning range of $975-$1727.
Josephine County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 10% 4.0+
Josephine County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 10% 4.0+ with a local housing base of 38,939 units and a modeled planning range of $975-$1727.
Lincoln County
Evidence-backed local evidence
$975-$1727
CDC EPHT Network Radon Tests from Labs: 13.2% 4.0+
Lincoln County is a strong cost page because it pairs CDC EPHT Network Radon Tests from Labs: 13.2% 4.0+ with a local housing base of 32,094 units and a modeled planning range of $975-$1727.
County estimates
Open a Oregon 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 Oregon?
Price ranges across Oregon 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.