Radon Mitigation Cost Calculator2026
Estimate radon mitigation system cost by foundation type (slab, basement, crawl space), system type (active sub-slab, passive, sub-membrane), number of suction points, fan grade, and electrical work.
Project Details
Total Estimated Cost
$1,841
Cost Breakdown
Cost Distribution
Data sources: Base costs derived from national industry cost surveys and contractor pricing data, adjusted with BLS inflation indices, Census housing/income signals, and FRED CSV fallback when BLS data is temporarily unavailable. Latest index refresh: April 2026.
Disclaimer: Estimates are approximate and for informational purposes only. Actual costs vary based on project complexity, contractor rates, material availability, and local market conditions. Always obtain multiple quotes from licensed contractors before starting a project.
Typical Project Cost by Foundation type
National average pricingSame default project size (default scope), priced across each material tier.
| Tier | Material rate | Total project | Installed per unit |
|---|---|---|---|
| Slab on grade | $896 | $1,642 | $0 |
| Full basement | — | $1,841 | $0 |
| Crawl space | — | $2,239 | $0 |
| Mixed / split-level | — | $2,537 | $0 |
Material rates reflect the latest BLS construction PPI adjustment. Installed totals include labor and supplies but exclude permits and any tear-out beyond the calculator's default scope.
Recent Cost Trends
Wholesale construction prices typically lead homeowner-facing quotes by 2–4 months. Use the trend below to decide whether to pull a project forward or wait for the next reading.
Residential Construction PPI — Trailing 12 Months
BLS series PCU236211236211, single-family construction producer prices.
200.1
+0.9% vs Mar 25
The PPI is the wholesale price of materials and labor that contractors pay, before margin. A rising index usually flows into homeowner quotes within 2–4 months. Use this trend to decide whether to pull a project forward or wait.
Radon Mitigation Cost by City
Browse all 202 cities by state
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Typical Cost Snapshot
For a typical radon mitigation scenario in the national baseline, this calculator currently models a total around $1,841.
This market is currently modeled close to the national baseline, so project swings are more likely to come from scope and finish choices than from regional pricing alone.
Local labor conditions, permit timing, and finish selection all influence how this project prices in your market.
Low / Mid / High Project Scenarios
Low Scenario
$1,089Single-point passive system on a slab home with existing outlet.
Mid Scenario
$1,849Active sub-slab depressurization on a basement with one suction point and short-term post-test.
High Scenario
$4,917Sub-membrane crawl-space system on a split-level with three suction points, premium fan, and continuous monitor.
What Changes the Estimate Most?
- Foundation type sets the baseline: slab is cheapest, basement is mid-range, and crawl space requires sub-membrane work that costs more.
- Number of suction points is driven by foundation complexity — split-level and large homes commonly need 2–3 points.
- Fan grade and electrical work (existing outlet vs new circuit) account for $200–700 of variation between similar systems.
When This Calculator Is Less Accurate
This calculator is less accurate when the home has multiple disconnected foundations, sub-slab voids that require sealing before depressurization, very high baseline radon (>20 pCi/L) needing multi-fan or HRV-integrated systems, or commercial-scale buildings.
Use the result as a budgeting starting point, then validate with local contractor quotes if the scope includes specialty materials, hidden damage, or permit-driven design changes.
How Much Does Radon Mitigation Cost?
A residential radon mitigation system typically costs $800–3,000 installed, depending on foundation type, system style, number of suction points, fan grade, and electrical work. Active sub-slab depressurization on a single-foundation slab home is on the low end; sub-membrane crawl-space systems and drain-tile or sump-integrated designs cost more. EPA Zone 1 areas (most of the Midwest, Appalachia, Mountain West) see the highest demand.
Cost Factors:
- Foundation type — slab is cheapest, basements are mid-range, and crawl spaces or split-levels cost more
- System type — passive systems are cheaper but less effective; active sub-slab depressurization is the standard
- Suction points — single-point systems cover most homes; complex foundations need multiple points at ~$350 each
- Fan grade — standard, high-suction, and ultra-quiet premium fans span a 2× range
- Electrical and venting routing — new outlets, attic runs, and rooftop terminations add labor time
Frequently Asked Questions (3)
How much does a radon mitigation system cost?
Most active radon mitigation systems cost $800–3,000 installed. A simple single-suction-point system on a slab or basement runs $900–1,500, crawl-space sub-membrane systems land $1,800–3,000, and complex multi-point installations on split-level homes can reach $3,500–5,000.
Do I need a radon mitigation system?
The EPA recommends action when indoor radon levels are 4 pCi/L or higher; many health authorities recommend mitigation above 2 pCi/L. Test your home — short-term radon test kits cost $20–40, and any home in EPA Zone 1 should be tested every few years and after major foundation work.
How long does a radon mitigation system last?
The PVC venting and sealing typically lasts 20+ years. The radon fan itself is the wear item, with a lifespan of about 5–10 years for standard models and 10–15 for premium ultra-quiet units. Most systems include a manometer that lets homeowners monitor function at a glance.
Data sources & methodology
Estimates blend national base costs, the BLS residential construction PPI, regional and direct metro CPI series, BLS OEWS state labor wages, and U.S. Census ACS housing signals. Market data refreshed April 2026. Expect ±15–30% spread vs an actual contractor quote.
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