Independent planning tool · 2026

Radon mitigation system cost calculator

Get a realistic planning range based on your home instead of relying on a single national average.

Tell us about the home

Change any input and your estimate updates instantly.

Finished home size

sq ft

80010,000 sq ft

ZIP code (optional)U.S. only

Optional. Adds a state price-level adjustment to the planning range.

City/state lookup is sent to Zippopotam.us. The ZIP is not added to analytics or the page URL.

Foundation

Stories

123+

Pipe routing

Latest radon result

pCi/L

Planning range

Estimated professional installation

$1,550 to $2,650

Home1,800 sq ft · 2 stories

FoundationBasement

Your radon result

At 4 pCi/L or higher, the EPA recommends fixing the home.

A planning estimate, not a contractor quote. The optional ZIP adjustment uses a state-level price index, while soil conditions, permits, electrical work, and fan placement can still change the final price.

Range, not false precision

Built for budgeting before an on-site quote.

EPA action guidance

Your reading does not inflate the cost estimate.

No quote-selling form

No name, email address, or phone number required.

Price drivers

What changes the cost of a radon mitigation system?

The visible pipe and fan are only part of the job. The contractor is also designing airflow beneath the home and choosing a route that stays safe, serviceable, and quiet.

Foundation layout

Crawl spaces and mixed foundations often need membranes, extra sealing, or more than one collection area.

Home size and zones

A larger footprint or separated slabs can require more suction points and additional diagnostic work.

Pipe route

A short exterior route usually costs less than concealed piping through finished rooms, garages, or closets.

Electrical and permits

A new outlet, permit fees, or local inspection rules may be priced separately by the contractor.

Our method

A transparent estimate you can sanity-check

We start with a basic professional installation allowance, then adjust for the home’s footprint, foundation, height, and pipe-routing difficulty. An optional ZIP lookup adds the latest available state price-level adjustment. The result is widened into a planning range to account for what cannot be known without an inspection.

Current model midpoint$2,000

$1,550$2,650

01Base installation allowance$1,150

02Home size: 1,800 sq ft+$100

03Basement+$250

042 stories+$225

05Standard installation+$250

06ZIP price-level adjustmentNot applied

The low and high ends apply a broad uncertainty margin. This model uses ZIP only to select a state-level price index. It does not know local contractor rates, soil type, permit fees, electrical work, or hidden construction conditions.

Reading the quote

What a professional proposal may include

Sub-slab airflow diagnostics

Suction point and PVC piping

Radon-rated fan and mounts

System pressure indicator

Labels and basic sealing

Post-installation radon test

Scope varies. Ask the installer to list inclusions, exclusions, warranty terms, and post-test responsibilities in writing.

Costs that may be separate

These items can move a quote beyond the calculator range.

Dedicated electrical outlet or licensed electrician
Crawl-space membrane and extensive sealing
Multiple suction points or separate foundation zones
Condensate control, mufflers, or aesthetic covers
Permit, inspection, or difficult-access charges

Radon basics

Know when to act

Radon is a radioactive gas and the second-leading cause of lung cancer deaths in the United States after cigarette smoke. Testing is the only way to know a home’s level.

Read CDC radon guidance

Below 2pCi/L

Below the EPA range where mitigation is typically considered.

2 to 4pCi/L

The EPA recommends considering mitigation in this range.

4 or morepCi/L

The EPA recommends fixing the home at this level or higher.

Questions