How much does radon mitigation cost in 2026?

Most homeowners pay between $900 and $2,500, with a national average near $1,700. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per system?

Installed pricing usually runs $900.00 to $2,500.00 per system, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-system price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

When is the cheapest time to book?

Off-season and shoulder months. Booking outside the spring–summer rush, and staying flexible on start dates, commonly saves 5–15% because crews are filling calendar gaps.

Yes. Contractor financing, a home equity line, or a 0% promotional card are all common. Compare the total interest cost against paying cash — promotional financing is sometimes priced into a higher bid.

How do I avoid getting overcharged?

Get the scope in writing with materials by brand and model, quantities, exclusions, permit responsibility, payment schedule and warranty. Never pay more than one third up front, and never pay in full before the final inspection.

What radon level requires mitigation?

The EPA action level is 4.0 pCi/L, and mitigation is worth considering at 2.0 or above. Most systems bring readings under 1.0.

How long does the system last?

Piping is permanent; the fan lasts about 10 years and costs $150–$400 to replace.

Home/Cost guides/Radon Mitigation

Construction

How much does radon mitigation cost?

Radon Mitigation costs $900 to $2,500 for a typical project, averaging about $1,700. Installed pricing usually runs $900.00 to $2,500.00 per system, and scope, materials, access and local labor rates explain nearly all of the variation.

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National average

$1,700

Typical low

$900

Typical high

$2,500

Per system

$900 – $2,500

Instant cost calculator

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Number of suction points1 system

Quality / material level

Site access

Removal / prep work

Timing

Region

Estimated project cost

$1,151 – $1,579

Most homeowners pay around $1,365

Compare quality / material level

Cost by material

Installed pricing per system.

Option	Installed cost	Pros	Cons
Single-point sub-slab system	$1,054 – $1,445	—	—
Sub-slab with sealing	$1,445 – $1,904	—	—
Crawlspace membrane system	$1,904 – $2,465	—	—
Multi-point system with monitoring	$2,465 – $3,400	—	—

Radon Mitigation cost by project size

Typical installed pricing before local adjustments.

Project size	Budget	Average	Premium
1 systems	$900	$1,700	$2,500
1 systems	$900	$1,700	$2,500
2 systems	$1,800	$3,400	$5,000
2 systems	$1,800	$3,400	$5,000

Radon Mitigation cost by material or quality level

Option	Price range	Best for
Single-point sub-slab system	$1,054.00 – $1,445.00 / system	Lowest upfront cost, shortest lifespan
Sub-slab with sealing	$1,445.00 – $1,904.00 / system	Best overall value for most homes
Crawlspace membrane system	$1,904.00 – $2,465.00 / system	Longer warranty and better finish
Multi-point system with monitoring	$2,465.00 – $3,400.00 / system	Top-tier materials and custom detailing

Where the money goes

A typical project budget, broken down by line item.

Labor0.45% · $8
Materials0.38% · $6
Permits & inspections0.05% · $1
Overhead & profit0.12% · $2

Cost by region

Labor markets move the number more than any other single factor.

Northeast

$1,035 – $2,875

+15% vs. national average

West

$1,062 – $2,950

+18% vs. national average

Midwest

$864 – $2,400

-4% vs. national average

South

$846 – $2,350

-6% vs. national average

Common add-ons

Line items that show up on most quotes but rarely in the headline price.

Post-mitigation testing

$150 – $300

Crawlspace vapor barrier

$1,500 – $5,000

Sump pit sealing

$200 – $800

Continuous radon monitor

$150 – $400

DIY vs. hiring a pro

Hire a pro

$900 – $2,500

Do it yourself

$405 – $1,375

DIY saves labor but not materials, permits or rework. Only take it on if the job does not require a licensed trade or inspection.

Ways to save

Practical levers that lower the bill without cutting quality.

Test first with a $20 kit before commissioning a system.
Route the pipe on the least visible elevation to skip cosmetic upgrades.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

Questions to ask your contractor

01Are you licensed and insured in my city, and can I see the certificate?
02Is this a fixed-price bid or an estimate that can change?
03What exactly is excluded from the quote?
04Who pulls the permit and who schedules inspections?
05What is the written workmanship warranty and how long does it last?
06What is the payment schedule, and how much is due up front?
07How long will the work take, and what could delay it?

Frequently asked questions

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Radon Mitigation cost by city

Local labor rates, permits and climate change the number. Pick your city for prices near you.

Radon Mitigation cost in Los Angeles, CA

$1,116 – $3,100

Radon Mitigation cost in San Diego, CA

$1,062 – $2,950

Radon Mitigation cost in San Jose, CA

$1,242 – $3,450

Radon Mitigation cost in San Francisco, CA

$1,305 – $3,625

Radon Mitigation cost in Oakland, CA

$1,188 – $3,300

Radon Mitigation cost in Sacramento, CA

$972 – $2,700

Radon Mitigation cost in Fresno, CA

$882 – $2,450

Radon Mitigation cost in Long Beach, CA

$1,098 – $3,050

Radon Mitigation cost in Anaheim, CA

$1,080 – $3,000

Radon Mitigation cost in Santa Ana, CA

$1,071 – $2,975

Radon Mitigation cost in Irvine, CA

$1,134 – $3,150

Radon Mitigation cost in Riverside, CA

$954 – $2,650

Radon Mitigation cost in San Bernardino, CA

$927 – $2,575

Radon Mitigation cost in Bakersfield, CA

$873 – $2,425

Radon Mitigation cost in Stockton, CA

$918 – $2,550

Radon Mitigation cost in Modesto, CA

$900 – $2,500

Radon Mitigation cost in Chula Vista, CA

$1,035 – $2,875

Radon Mitigation cost in Fremont, CA

$1,215 – $3,375

Radon Mitigation cost in Pasadena, CA

$1,152 – $3,200

Radon Mitigation cost in Glendale, CA

$1,125 – $3,125

Radon Mitigation cost in Santa Clarita, CA

$1,044 – $2,900

Radon Mitigation cost in Torrance, CA

$1,107 – $3,075

Radon Mitigation cost in Oxnard, CA

$1,026 – $2,850

Radon Mitigation cost in San Mateo, CA

$1,260 – $3,500

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How much does radon mitigation cost?

Cost by material

Radon Mitigation cost by project size

Radon Mitigation cost by material or quality level

Where the money goes

Cost by region

Common add-ons

DIY vs. hiring a pro

Ways to save

Questions to ask your contractor

Frequently asked questions