Radon Mitigation in Greenfield, Iowa
Greenfield is the Adair County seat, with older homes around the courthouse square and homes being rebuilt after the May 2024 tornado. We test rebuilt homes and set up radon-resistant construction.
- Iowa HHS credentialed
- 24/7 booking
- 5-year warranty
- Iowa HHS Credentialed
- NRPP / NRSB Certified Techs
- 5-Year Warranty
- 24/7 Support
Radon Mitigation Questions in Greenfield
The local problem
Rebuilding after the 2024 Greenfield tornado without a radon plan
What you notice: A home is being rebuilt or repaired on a new foundation, and nobody has said what to do about radon.
Why it happens here: The May 2024 tornado destroyed many Greenfield homes, and new homes started after July 1, 2026 must include a passive radon system under Iowa HF 2297.
How we fix it: New construction radon systems work covers gravel, sub-slab pipe and sealing during the rebuild, followed by a radon test after move-in to see if a fan is needed.
Every Iowa county is EPA Zone 1
About 71% of Iowa homes test above the EPA action level of 4.0 pCi/L. Your neighbor's number tells you little about yours, so a 48-hour test is the only way to know.
Winter makes it worse
When the furnace runs and the ground freezes, warm air rises out of the house and pulls soil gas in through the slab, sump and cracks.
High results stall closings
A failed radon test during inspection can hold up a sale. We test inside your contingency window and can install and verify a system before closing.
Radon Services for Older Homes and Rebuilds
Testing, mitigation, new construction, commercial and maintenance from one credentialed team. The services most requested here are listed first.
New Construction Radon Systems
Passive system installs for builders, post-construction testing and passive-to-active upgrades.
View ServiceRadon Testing
CRM, short-term, long-term, real estate and post-mitigation radon testing by credentialed testers.
View ServiceResidential Radon Mitigation
Radon systems matched to your foundation: basement sub-slab, crawlspace, exterior, waterborne and vapor intrusion.
View ServiceCommercial Radon Systems
Testing and mitigation for schools, HUD multifamily, offices, warehouses and vapor intrusion sites.
View ServiceRadon System Maintenance
Error codes, fans, pipes and joints, and inspections for existing radon systems, including ones we didn't install.
View ServiceMost local requests start with new construction radon systems or radon testing. Every job is handled by the same Iowa HHS-credentialed crews behind our radon mitigation in Des Moines, with the same post-mitigation test and 5-year warranty.
How It Works
Most single-family homes are finished in one day, and every system is verified before we call it done.
- 01
Test
A 48-hour continuous radon monitor test in your home, or send us an existing result.
- 02
Design
We review your foundation, slab sections and sump, then pick suction points and routing.
- 03
Install
Credentialed techs install, seal and add a manometer. Most homes take one day.
- 04
Verify
A post-mitigation test proves the result, backed by our 5-year warranty.
Rebuilding? Plan for Radon Now
Send your result and foundation type for a written quote. Every system is verified with a post-mitigation test and covered by our 5-year warranty on systems and installs.
Why Adair County Homeowners Call Us
- Fieldstone and block foundation experience
- Waterborne radon systems
- Credentialed techs
- 5-year warranty
- 24/7 support
Reviews From Local Homeowners
"Stone foundation and high numbers. They sealed the walls and added suction. Big improvement."
"They tested our well and the house. Straight answers on both."
Radon Experience With Fieldstone and New Foundations
Local logistics
Serving Greenfield and Adair County
Greenfield is southwest of the metro. We schedule visits by I-80 and Iowa Highway 25 or Iowa Highway 92, and group nearby jobs so we can reach you on a set day. Call to find the next available date.
Local homes
Older Square Homes and Rebuilds
Older homes near the Adair County Courthouse may sit on fieldstone or block foundations that leak soil gas through walls as well as floors.
Homes rebuilt after the May 2024 tornado are a chance to build radon control in from the start. We work with owners and builders on sub-slab gravel, pipe and sealing, then test after move-in. Rural homes on private wells should test water too.
Local facts that shape the job
- Greenfield is the Adair County seat and uses ZIP code 50849. (en.wikipedia.org)
- A violent tornado struck Greenfield on May 21, 2024, killing four people and injuring at least 35. (en.wikipedia.org)
- Rebuilt single- and two-family homes started after July 1, 2026 fall under the Iowa HF 2297 passive radon requirement. (legis.iowa.gov)
- The Adair County Courthouse and the E. E. Warren Opera House anchor the historic town square. (en.wikipedia.org)
Neighborhoods and Routes We Cover in Greenfield
Areas served
- Greenfield town square area
- Rebuilt neighborhoods
- Rural Adair County
ZIP codes we cover: 50849
Local landmarks
- Adair County Courthouse
- E. E. Warren Opera House
- Hotel Greenfield
- Iowa Aviation Museum
- Freedom Rock
How we get there
We reach Greenfield by I-80 and Iowa Highway 25 or on Iowa Highway 92, and group Adair County visits on set days.
Greenfield Radon FAQs
We are rebuilding after the 2024 tornado. When should we plan for radon?
Before the slab is poured. Gravel, sub-slab pipe and sealing are far cheaper during construction. Homes started after July 1, 2026 need a passive system under Iowa HF 2297, and a test after move-in shows whether to add a fan.
Can you mitigate fieldstone foundations near the Greenfield square?
Yes. Fieldstone walls often need wall sealing and careful suction placement along with a sub-slab system.
Do you travel to Adair County?
Yes. We serve Greenfield and rural Adair County on scheduled days. Call (515) 218-7447 for the next available date.
Still have a question?
Our support line answers 24 hours a day, 7 days a week.
Also Serving Near Greenfield
Book Radon Mitigation in Greenfield
Credentialed testing and mitigation with 24/7 booking, a post-mitigation test and a 5-year warranty on systems and installs.
- Iowa HHS credentialed
- 5-year warranty
- Post-mitigation test