New Jersey 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 NJ 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
New Jersey 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
New Jersey requires radon testing and disclosure for all real estate transactions in Tier 1 counties under the Radon Hazard Subcode.
State licensing required
New Jersey requires certification for radon testers and mitigators through the NJ DEP.
NJ Cost Starting Point
New Jersey cost range by foundation
Basement
$1075-$1927
Use this when the home has a basement or lowest-level slab that supports a standard sub-slab suction system.
Slab-on-Grade
$1018-$1812
Slab homes can price differently when finished space, routing, or core drilling complicates the system path.
Crawl Space
$1590-$2900
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. New Jersey requires radon testing and disclosure for all real estate transactions in Tier 1 counties under the Radon Hazard Subcode.
Mitigation licensing: State licensing can add contractor and permit friction. New Jersey requires certification for radon testers and mitigators through the NJ DEP.
EPA zone mix in New Jersey
7
Zone 1
11
Zone 2
3
Zone 3
21 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
New Jersey 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.
21
Listed
21
Evidence
0
Measured
Best county pages to open first
Middlesex County
Demand cohort local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 72% Zone 1/2 municipalities
Middlesex County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 72% Zone 1/2 municipalities with a local housing base of 314,752 units and a modeled planning range of $1075-$1927.
Monmouth County
Demand cohort local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 60.4% Zone 1/2 municipalities
Monmouth County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 60.4% Zone 1/2 municipalities with a local housing base of 268,751 units and a modeled planning range of $1075-$1927.
Burlington County
Demand cohort local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 79.5% Zone 1/2 municipalities
Burlington County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 79.5% Zone 1/2 municipalities with a local housing base of 184,859 units and a modeled planning range of $1075-$1927.
Gloucester County
Demand cohort local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 87.5% Zone 1/2 municipalities
Gloucester County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 87.5% Zone 1/2 municipalities with a local housing base of 117,041 units and a modeled planning range of $1075-$1927.
Hunterdon County
Demand cohort local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities
Hunterdon County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities with a local housing base of 51,684 units and a modeled planning range of $1075-$1927.
Morris County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities
Morris County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities with a local housing base of 197,541 units and a modeled planning range of $1075-$1927.
Mercer County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities
Mercer County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities with a local housing base of 150,035 units and a modeled planning range of $1075-$1927.
Somerset County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities
Somerset County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities with a local housing base of 131,989 units and a modeled planning range of $1075-$1927.
Sussex County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities
Sussex County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities with a local housing base of 62,709 units and a modeled planning range of $1075-$1927.
Essex County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 81% Zone 1/2 municipalities
Essex County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 81% Zone 1/2 municipalities with a local housing base of 334,136 units and a modeled planning range of $1075-$1927.
Camden County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 78.4% Zone 1/2 municipalities
Camden County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 78.4% Zone 1/2 municipalities with a local housing base of 212,477 units and a modeled planning range of $1075-$1927.
Union County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 85.7% Zone 1/2 municipalities
Union County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 85.7% Zone 1/2 municipalities with a local housing base of 209,928 units and a modeled planning range of $1075-$1927.
Warren County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities
Warren County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 100% Zone 1/2 municipalities with a local housing base of 46,493 units and a modeled planning range of $1075-$1927.
Bergen County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 58% Zone 1/2 municipalities
Bergen County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 58% Zone 1/2 municipalities with a local housing base of 367,059 units and a modeled planning range of $1075-$1927.
Hudson County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 66.7% Zone 1/2 municipalities
Hudson County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 66.7% Zone 1/2 municipalities with a local housing base of 311,964 units and a modeled planning range of $1075-$1927.
Passaic County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 68.8% Zone 1/2 municipalities
Passaic County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 68.8% Zone 1/2 municipalities with a local housing base of 184,830 units and a modeled planning range of $1075-$1927.
Salem County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 73.3% Zone 1/2 municipalities
Salem County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 73.3% Zone 1/2 municipalities with a local housing base of 27,739 units and a modeled planning range of $1075-$1927.
Cumberland County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 28.6% Zone 1/2 municipalities
Cumberland County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 28.6% Zone 1/2 municipalities with a local housing base of 57,143 units and a modeled planning range of $1075-$1927.
Ocean County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 6.1% Zone 1/2 municipalities
Ocean County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 6.1% Zone 1/2 municipalities with a local housing base of 293,899 units and a modeled planning range of $1075-$1927.
Atlantic County
Cost eligible local evidence
$1075-$1927
New Jersey DEP Radon Potential Municipality Tier Table: 8.7% Zone 1/2 municipalities
Atlantic County is a strong cost page because it pairs New Jersey DEP Radon Potential Municipality Tier Table: 8.7% Zone 1/2 municipalities with a local housing base of 131,786 units and a modeled planning range of $1075-$1927.
County estimates
Open a New Jersey 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 New Jersey?
Price ranges across New Jersey 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.