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Closing-timeline service · 48-hour quotes · 7-14 day mitigation

Wisconsin Real Estate Radon Mitigation — Save the Closing

Buyer's inspection radon test came back over 4 pCi/L? You have a routine but time-sensitive transaction issue. Wisconsin Radon Experts routes failed-inspection Wisconsin radon jobs to NRPP + WI DHS-certified partner contractors who deliver 48-hour binding quotes, 7-14 day mitigation + verification, and lender-acceptable closing documentation. Same price as standard install — no closing-rush premium.

📞 Call now — quote in 2 hours: (414) 386-2224 Submit Inspection Report
Just got your inspection report? Check the result

Match Your Inspection Radon Result to the EPA Action Level

Type the pCi/L value from your home-inspection radon test below. If your reading is at or above 4.0 pCi/L, you have a contingency-window decision to make — and we can quote your mitigation within 2 hours.

pCi/L

Enter the picocuries-per-liter value from your charcoal canister or continuous radon monitor (CRM) report.

How the calculator maps test results to EPA guidance
Radon level (pCi/L) Risk tier EPA-aligned recommendation
0.0 – 1.9Below average — lowNo action needed. Re-test every 2 years or after major renovation.
2.0 – 3.9Elevated — EPA "consider mitigating"Consider mitigation, especially with smokers, children, or lower-level bedrooms. Run a long-term (90+ day) test for confirmation.
4.0 or higherEPA Action Level — fix the homeInstall an active radon mitigation system. EPA recommends fixing the home as soon as practical.
The Wisconsin Radon Experts Real Estate Closing Workflow

How We Save the Closing — Day-by-Day Workflow

Real-estate-transaction radon mitigation runs on a transaction calendar, not a contractor's calendar. This is the exact day-by-day flow we follow from the moment you call.

📅 Day 0 — You Call

Forward us the home inspection report. We confirm the property is in our Wisconsin partner network coverage area and assign a partner contractor with matching capacity. Quote arrives within 2 hours — binding, itemized, with full lender-acceptable documentation included at no extra cost.

📑 Day 1-3 — Buyer / Seller Agreement

Your real estate agents handle the negotiation: seller-paid mitigation, escrow credit, or buyer-paid (rare). Our quote works for all three. The most common path: seller pays, work is scheduled and completed before closing, and a verified-below-threshold result is provided as part of closing documentation.

🛠️ Day 3-7 — Priority Installation

Real-estate-transaction jobs jump our standard queue. NRPP + WI DHS-certified installer completes the active sub-slab depressurization or sub-membrane install in 4-8 hours of on-site work. System runs continuously from activation.

🧪 Day 8-10 — Post-Mitigation Verification

Independent 48-96 hour continuous radon monitor (CRM) test under closed-house conditions. AARST-NRPP-certified measurement protocol. Result is time-stamped, defensible, and acceptable to FHA, USDA, VA, and all major conventional lenders.

📊 Day 11 — Closing Documentation Package

Final report bundles: original inspection result, contractor certification, install warranty (5-year fan, lifetime piping), and verified post-mitigation reading below 4 pCi/L. Sent directly to buyer's agent, lender, and title company. Closing proceeds on schedule.

Most Wisconsin radon contingencies are written with 10-14 day inspection windows. The 7-14 day mitigation workflow above fits inside that window with no extension required. Tighter timelines (5-7 day contingency) may require contingency-extension agreement between buyer and seller — your agent can advise.

By city

Wisconsin City-Specific Real Estate Radon Pages

Local transaction-specific resources for each major Wisconsin metro:

Real Estate Radon — Milwaukee

Milwaukee County · 4.8 pCi/L county avg

Real Estate Radon — Madison

Dane County · 4.8 pCi/L county avg

Real Estate Radon — Green Bay

Brown County · 5.5 pCi/L county avg

Real Estate Radon — Kenosha

Kenosha County · 4.7 pCi/L county avg

Real Estate Radon — Racine

Racine County · 5.8 pCi/L county avg

Real Estate Radon — Appleton

Outagamie County · 6 pCi/L county avg

Real Estate Radon — Waukesha

Waukesha County · 6.4 pCi/L county avg

Real Estate Radon — Eau Claire

Eau Claire County · 5.2 pCi/L county avg

Real Estate Radon — Oshkosh

Winnebago County · 6.2 pCi/L county avg

Real Estate Radon — Janesville

Rock County · 6.4 pCi/L county avg

Real Estate Radon — West Allis

Milwaukee County · 4.8 pCi/L county avg

Real Estate Radon — La Crosse

La Crosse County · 4.2 pCi/L county avg

Real Estate Radon — Sheboygan

Sheboygan County · 4.4 pCi/L county avg

Real Estate Radon — Wausau

Marathon County · 11.6 pCi/L county avg
Real Estate Radon FAQ

Closing-Timeline Radon Questions Answered

Frequently Asked Questions

My Wisconsin home inspection failed the radon test — what do I do next?
If your inspection radon test returned at or above 4.0 pCi/L, you have a routine real-estate-transaction decision to make: (1) Negotiate seller-paid mitigation as a closing condition, (2) Negotiate a closing credit and have buyer install post-close, or (3) Walk via the radon contingency. Most Wisconsin transactions go route 1. Call (414) 386-2224 — we route to a partner contractor who can quote within 2 hours and complete install + post-mitigation verification within 7-14 days, fitting most inspection-contingency windows.
How fast can radon mitigation be installed before closing in Wisconsin?
Standard Wisconsin real-estate-transaction radon mitigation timeline: Day 1 — quote within 2 hours of inspection report; Day 1-3 — buyer/seller agreement on cost; Day 3-7 — installation (4-8 hours on-site); Day 8-10 — 48-96 hour post-mitigation verification test; Day 11 — final report ready for closing. Total: 7-14 days. Real estate transactions get priority routing over standard installs.
Who pays for radon mitigation in a Wisconsin real estate transaction?
In Wisconsin transactions, roughly 60% of radon mitigations are seller-paid (the seller fixes the home before close), 30% are negotiated as a closing credit (buyer takes cash at close, installs post-close), and 10% are buyer-paid (rare, typically when seller refuses and buyer wants the home). The Wisconsin Real Estate Purchase Agreement does not mandate which party pays — this is negotiated between buyer and seller after an elevated result is returned.
Is escrow credit or repair-before-close better for Wisconsin radon mitigation?
Closing credit is faster (no install delay) but leaves the buyer with an outstanding project at move-in and slightly higher financing complexity. Repair-before-close is cleaner (closing document shows verified mitigation complete) and is preferred by lenders — especially FHA, USDA, and VA underwriters who increasingly request radon verification. For most Wisconsin transactions on a tight timeline, a repair-before-close at 7-14 days fits the standard 10-day inspection contingency with room to spare.
Does Wisconsin law require radon mitigation disclosure on home sales?
Wisconsin's Wis. Stat. §709.03 requires sellers to disclose KNOWN radon test results and any installed mitigation system to buyers. While pre-sale testing is not legally mandated, the moment a test is performed (typically during the buyer's inspection contingency), the result becomes a known fact that must be disclosed in any future transaction if the home is re-listed. Sellers cannot legally withhold radon information they possess.
What documentation does the lender need for radon mitigation at closing?
Standard lender documentation package: (1) The original inspection radon test result (typically 48-96 hour CRM from a certified measurement provider), (2) The mitigation contractor's install certification (NRPP + WI DHS state credentials), (3) The post-mitigation verification test result showing the home is now below 4 pCi/L, and (4) Written warranty documentation (typical: 5-year fan, lifetime piping). FHA, USDA, VA, and most conventional lenders accept this package. We provide all four documents as standard with every real-estate-transaction install.
Can a radon mitigation system installed for closing void the buyer's home inspection contingency?
No — and this is critical to understand. The radon contingency is satisfied when the home meets the agreed-upon threshold (typically <4 pCi/L per EPA action level) as confirmed by an independent post-mitigation verification test. As long as a qualified contractor installs the mitigation system AND independent post-testing confirms the home is below threshold within the contingency window, the contingency is met. Re-opening the inspection contingency for unrelated reasons is not permitted by standard purchase agreements once the radon issue is addressed.
What does emergency real estate radon mitigation cost in Wisconsin?
Wisconsin real-estate-transaction radon mitigation typically runs $1000-$2500 for a single-family home — the same price range as a standard install. We do NOT charge a "rush premium" for real-estate-transaction work; closing-timeline scheduling is included at standard price. Sub-slab depressurization (ASD) installations make up about 85% of Wisconsin real-estate-transaction mitigations.

Inspection radon over 4 pCi/L? Quote in 2 hours.

Forward us the inspection report. Binding quote, lender-acceptable documentation, 7-14 day install + verification.

📞 (414) 386-2224 Submit Inspection Report