How much does radon mitigation cost?

A professional radon mitigation system runs about $800 to $2,500 installed, with most homes around $1,200 to $1,500. DIY materials are roughly $300 to $800, though many states require a certified installer for the work to count.

Can I install a radon system myself?

A handy DIYer can install a sub-slab depressurization system, and kits exist. That said, several states require a certified radon professional, and proper suction-point selection, exhaust placement, and post-testing matter for safety. Check your state's rules before doing it yourself.

What radon level needs mitigation?

The EPA recommends acting at 4.0 picocuries per liter (pCi/L) or higher, and considering action between 2 and 4. Radon is a leading cause of lung cancer, so testing first and confirming the level after mitigation is the whole point of the system.

How does a radon mitigation system work?

The most common system, sub-slab depressurization, uses a fan to draw radon-laden air from beneath the foundation through a pipe and vent it safely above the roof, before it can enter the home. Sealing slab cracks makes the suction more effective.

Do I need to test for radon after mitigation?

Yes. A post-mitigation test confirms the system actually brought levels below the action threshold. Installing a fan and pipe does not guarantee success on its own, so the after test is how you know your home is safe.

PROJECT GUIDE · UPDATED JUNE 2026

Radon Mitigation Cost & Project Guide

Everything for your Radon Mitigation in one place: cost by state, DIY vs. hire, the tools and materials, and a local pro if you want one.

NATIONAL AVERAGE · UPDATED JUNE 2026

HIRE A PRO

$800–$2,500

DIY COST

$300–$800

Typical project: A sub-slab depressurization system for an average home

Skill levelDoable with careAnyone can take this on. The Blueprint walks you through it, step by step.

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Exact cost by zip →Tools & materials →Find a pro →

Source: 3+ benchmark aggregations (RSMeans, Angi, Fixr, HomeGuide) plus Submitted Quotes data

Plan your Radon Mitigation

A quick checklist to get from idea to done. Want it as a printable PDF? Grab the full free version, emailed to you.

1Set a realistic budget using the cost range above.
2Check whether your project needs a permit in your state.
3Decide DIY or hire (see the breakdown below).
4Make your materials and tools list.
5If hiring, get three quotes and compare them like-for-like.
6Plan the timeline and order materials with a 10 percent buffer.

Get the full free Radon Mitigation checklist, emailed as a PDF →

Tools and materials for a Radon Mitigation

What you will actually buy. We flag what to rent versus own so you do not overspend on a one-time tool.

Materials

Radon fan · 1
PVC vent pipe and fittings · 1 set
Sealant and sub-slab materials · 1 set
Manometer and post-test kit · 1 set

Tools

Hammer drill and core bit · rent or buy
PVC tools and caulk gun · you likely own
Ladder for the roof exhaust · you likely own

See all the tools and materials worth buying →

Pro tips for your Radon Mitigation

The mistakes that cost DIYers the most, and how to stay ahead of them.

Not testing before and after

Exhausting too low or near openings

Fan mounted in living space

Leaving slab cracks and the sump unsealed

Should you DIY or hire for Radon Mitigation?

It depends on three things: your skill level, your time, and your tolerance for the riskiest parts of the project.

When DIY makes sense

→You have prior experience with similar home improvement projects
→The scope is well-defined and doesn't involve hidden structural work
→You can dedicate multiple days without rushing the job
→You're comfortable pulling a permit and scheduling inspections

When to hire

→The project involves electrical, plumbing, or structural elements
→You're on a hard deadline (sale, rental, weather window)
→Mistakes would be expensive or dangerous to fix
→Your jurisdiction requires a licensed contractor for permit sign-off
→You haven't done this type of work before

DifficultyModerate

Doable with some project experience and comfort handling permits and inspections.

Not planning to DIY? Find a local Radon Mitigation pro →

What drives the cost of Radon Mitigation

Materials

The single biggest material variable is your product choice. Sub-slab depressurization and Sump-pit suction sit at opposite ends of the price spectrum, a decision that can shift your materials budget by 40–60%. Key line items include radon fan, pvc vent pipe and fittings, sealant and sub-slab materials, each priced per unit and sensitive to regional supply-chain conditions. Bulk purchasing and timing your order outside peak season (spring and early summer) can reduce material costs by 10–15%.

Labor

BLS occupational wage data shows systems-trade crews earn $28–$52/hour depending on metro area, and most radon mitigation jobs require a two- to three-person crew for at least one full day. Labor typically accounts for 40–60% of the total project cost. Project complexity, custom details, tight access, or non-standard configurations, adds crew time and can push labor costs well above the national average.

Site conditions

Slope, soil type, and existing-structure condition are the three site factors contractors price most aggressively. Demolition or removal of old materials adds dumpster and disposal fees that rarely appear in online estimates. Local code requirements, permit fees, required inspections, and jurisdiction-specific material standards, can add $200–$1,500 to any project before a single tool is lifted.

Rather hire it out?

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Radon Mitigation cost in your state

Radon Mitigation cost varies a lot by state. Open your state for locally calibrated hire and DIY numbers.

Radon Mitigation cost in Michigan →Radon Mitigation cost in California →Radon Mitigation cost in Texas →Radon Mitigation cost in Florida →Radon Mitigation cost in New York →Radon Mitigation cost in Pennsylvania →Radon Mitigation cost in Ohio →Radon Mitigation cost in Georgia →

See all home improvement costs by state →