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Boulder, CO · Closing-timeline service

Radon Mitigation Under Contract — Boulder, CO

Buyer's inspection radon test on a Boulder home came back at or above 4 pCi/L? Routine but time-sensitive. Colorado Radon Experts routes failed-inspection Boulder radon jobs to NRPP + CDPHE-certified partner contractors who deliver 2-hour binding quotes, priority installation, and lender-acceptable closing documentation — all within most 10-14 day Colorado inspection contingency windows.

📞 Quote in 2 hours: (720) 605-9116 Forward Inspection Report
Boulder inspection radon result?

Check Your Boulder Inspection Result Against the EPA Action Level

Type the pCi/L value from your Boulder home-inspection radon test below. If your reading is at or above 4.0 pCi/L, we can quote your mitigation within 2 hours and fit completion inside most Boulder inspection contingency windows.

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.
How we save the Boulder closing

Boulder Real Estate Radon Mitigation — Day-by-Day

📅 Day 0 — Forward Inspection Report

Send the buyer's inspection radon result. We confirm the Boulder property is in our coverage area and assign an NRPP + CDPHE-certified partner contractor.

⚡ Day 1 — Binding Quote in 2 Hours

Itemized quote with full lender-acceptable documentation included at no extra cost. Same pricing as standard Boulder install — no rush premium.

📑 Day 1-3 — Agent Negotiation

Seller-paid, escrow-credit, or buyer-paid — your real estate agent negotiates the path. Our quote works for all three.

🛠️ Day 3-7 — Priority Installation

Boulder real-estate-transaction jobs jump the standard install queue. 4-8 hours of on-site work, typically sub-slab depressurization (ASD).

🧪 Day 8-10 — Post-Mitigation Verification

Independent 48-96 hour continuous radon monitor under closed-house conditions. Time-stamped, defensible result confirms the home is below 4 pCi/L.

📊 Day 11 — Closing Documentation Package

Full lender package (inspection result + contractor certifications + verification test + warranty) sent to buyer's agent, lender, and title. Boulder closing proceeds on schedule.

Boulder Neighborhoods We Serve

Boulder sits in Boulder County in Colorado's foothills / granitic bedrock. Colorado's statewide indoor radon average is 6.4 pCi/L — well above the EPA action level of 4.0 pCi/L and the U.S. average of 1.3 pCi/L. With foothills / granitic bedrock geology and full-basement housing common in Boulder, EPA and Colorado health officials recommend every home be tested. If your test is 4.0 pCi/L or higher, mitigation is recommended; levels between 2 and 4 pCi/L are also worth addressing given Colorado's elevated background radon.

Real-estate-transaction radon mitigation neighborhoods in Boulder: North Boulder, Table Mesa, Gunbarrel.

All Boulder radon mitigation work performed by NRPP-certified, CDPHE-certified partner contractors routed through Colorado Radon Experts.

Boulder Real Estate Radon FAQ

Closing-Timeline Questions Boulder Buyers + Agents Ask

Frequently Asked Questions

Home inspection radon test failed on my Boulder purchase — what now?
If your buyer's inspection radon test returned at or above 4.0 pCi/L, you have a routine Boulder transaction decision. The most common path: seller-paid mitigation completed before closing. Quote arrives within 2 hours of forwarding us the inspection report. Install in 4-8 hours of on-site work. Post-mitigation verification within 48-96 hours. Closing documentation package within 11 days. Most Boulder radon contingencies fit comfortably inside this window.
How quickly can radon mitigation happen before closing in Boulder?
Boulder real-estate-transaction radon mitigation timeline runs Day 1-11: quote (Day 1) → buyer/seller agreement (Day 1-3) → priority install (Day 3-7) → 48-96 hour post-mitigation verification (Day 8-10) → lender-acceptable documentation package (Day 11). Real-estate-transaction jobs jump our standard queue; no rush premium.
Who typically pays for radon mitigation in a Boulder home sale?
Roughly 60% of Boulder real-estate-transaction radon mitigations are seller-paid (seller fixes before close), 30% are negotiated as a closing credit (buyer takes cash at close), 10% are buyer-paid. The Colorado Real Estate Purchase Agreement does not mandate which party pays — your real estate agent negotiates with the other side. The seller-paid + repair-before-close path is preferred by FHA, USDA, and VA underwriters.
What does radon mitigation cost in Boulder, CO?
Boulder single-family radon mitigation typically runs $1000-$2800. Standard active sub-slab depressurization (ASD) is the most common system type (~85% of Boulder installs). We do NOT charge a rush premium for closing-timeline work; real-estate-transaction jobs price at the same range as standard installs.
Does Boulder have higher-than-average radon levels?
Boulder (Boulder County) averages 6.4 pCi/L indoor radon — that's 1.6x the EPA action level of 4 pCi/L. Approximately 50% of Boulder homes test elevated. Cold Colorado winters intensify the stack effect — heated indoor air rising creates negative pressure that pulls radon-laden soil gas into basements. Winter radon readings commonly run 30–50% higher than summer. This means a failed-inspection radon test on a Boulder listing is not unusual — it should be expected on a meaningful share of transactions.
Will an FHA / VA / USDA lender accept Boulder radon mitigation documentation?
Yes. Our standard real-estate-transaction documentation package includes (1) the original inspection radon result, (2) the partner contractor's NRPP + CDPHE certifications, (3) the post-mitigation verification test result confirming the home is below 4 pCi/L, and (4) install warranty (5-year fan, lifetime piping). This package is accepted by FHA, USDA, VA, and all major conventional lenders without further documentation requests.
Can Boulder radon mitigation happen during the standard 10-day inspection contingency window?
Yes — the 7-14 day mitigation workflow fits inside most standard Boulder 10-14 day inspection contingency windows. If the contingency was written tighter (5-7 days), a contingency-extension agreement between buyer and seller is typically the cleanest path; your real estate agent can advise on standard Colorado extension language.
Should Boulder sellers pre-test for radon before listing?
Strongly recommended — especially in Boulder County where county average is 6.4 pCi/L. Pre-listing radon testing lets Boulder sellers (1) surface elevated readings before going under contract, (2) mitigate proactively at standard pricing instead of under buyer-side closing pressure, (3) market the home with a verified-mitigated radon result as a transaction advantage. Listings with documented pre-mitigation typically close faster and at full price.

Boulder closing on the line? Quote in 2 hours.

Forward the inspection report. We route to a Boulder County NRPP + CDPHE-certified partner with closing-timeline capacity.

📞 (720) 605-9116 Forward Boulder Inspection Report