Field Notes

Real homes. Real numbers. Real fixes.

Case studies and walk-throughs from radon mitigation jobs across Greater Cincinnati. Specific addresses anonymized; specific numbers preserved.

  1. Data resource · 4 min read

    West side, east side: radon data across Hamilton County

    Ohio test data for Westwood, College Hill, and Colerain against Hyde Park, Mt. Washington, and Anderson shows radon tracks distance, not side of town.

    Published November 3, 2026 · Cincinnati

  2. Deep dive · 5 min read

    Cincinnati radon mitigation cost: what moves a quote up or down

    Most local sub-slab systems run $1,200 to $2,400. What pushes a quote to either end, what an Ohio proposal must include, and the costs after install day.

    Published October 27, 2026 · Cincinnati

  3. Deep dive · 5 min read

    Northern Kentucky radon: a Boone, Kenton, and Campbell guide

    EPA maps all three Northern Kentucky counties as Zone 2, yet high radon still turns up. Kentucky's rules, where to get kits, and testing for a sale.

    Published October 20, 2026 · Fort Mitchell

  4. How-to · 4 min read

    How long radon mitigation takes, from first call to retest

    The install is usually one day, but the full job has waiting periods set by EPA guidance and Ohio rules. The calendar from a high test to a verified fix.

    Published October 13, 2026

  5. How-to · 5 min read

    Sub-slab ventilation systems in Cincinnati basements, explained

    A sub-slab ventilation system pulls radon from under the floor and vents it above the roof. How one fits a local basement and what Ohio requires of it.

    Published October 6, 2026

  6. Data resource · 5 min read

    Radon levels by ZIP code: reading the Cincinnati numbers

    Ohio ZIP data puts downtown near a 0.9 pCi/L radon median and Harrison near 3.7. How to read those numbers, and why a neighbor's test can't speak for you.

    Published September 29, 2026 · Hyde Park

  7. How-to · 5 min read

    Heating-season radon testing in Greater Cincinnati, done right

    A closed-up winter house gives the most revealing radon reading. Where to place the kit, what ruins a test, and where to get one in Ohio or Kentucky.

    Published September 28, 2026 · Cincinnati

  8. How-to · 5 min read

    Cincinnati January Radon Action Month: the homeowner checklist

    Ohio Department of Health partners with Hamilton County Public Health, Butler County General Health, Warren County Health District, and Clermont County Public Health to distribute free or low-cost radon test kits during January Radon Action Month. Here is the homeowner checklist for the 2027 round and what to do with the result.

    Published September 19, 2026

  9. Case study · 6 min read

    Post-spray-foam radon retest: what changed on a typical Hyde Park home

    A 1930 Hyde Park home had a working radon mitigation system (post-mitigation 1.4 pCi/L) and then added closed-cell foam at the rim joist and open-cell at the attic floor. The retest 60 days later showed a meaningful shift. Here is what the retest measured and how the system was re-tuned.

    Published August 22, 2026

  10. How-to · 5 min read

    Cincinnati 2026-2027 school year radon checklist for parents

    Ohio's radon law sets no school testing schedule, but ODH and EPA both recommend testing schools. Five questions for your child's school, and the test to run at home.

    Published August 8, 2026

  11. How-to · 4 min read

    Cincinnati summer radon testing: when a July reading is the right read

    Cincinnati radon equilibrium shifts noticeably between heating-season and cooling-season air-pressure dynamics. Here is when a July or August test produces the most actionable result, and when to wait for the next heating season instead.

    Published July 11, 2026

  12. How-to · 5 min read

    What the 12-month verification retest typically shows for a Cincinnati radon system

    Industry-standard outcomes for a properly-installed Hamilton, Butler, Warren, or Clermont county radon mitigation: what the 12-month follow-up retest catches, what predicts a clean reading, and what to do if the number drifts.

    Published June 27, 2026

  13. Case study · 6 min read

    An FHA-financed Mason buyer with a 14-day window: how the radon contingency closed on time

    An FHA buyer in Mason got a 5.1 pCi/L radon test on day 4 of the inspection contingency. FHA underwriting added 3 extra requirements compared to a conventional loan. The closing happened on day 14. Here is the day-by-day timeline.

    Published June 20, 2026 · Mason

  14. Case study · 5 min read

    A Madeira passive-stack activation: why $700 was the right answer over $2,000 alternatives

    A Madeira homeowner got three quotes ranging from $700 to $2,200 for a radon mitigation that all three contractors agreed her home needed. Here is why the cheapest quote was the right one and what the other two were actually proposing.

    Published June 13, 2026 · Madeira

  15. Case study · 6 min read

    A Norwood 1924 stone-rubble basement: when sealing is most of the job

    A 1924 Sears-kit foursquare in Norwood tested at 13.6 pCi/L with hundreds of unsealed mortar joints between limestone-rubble blocks. The fix took two days and the sealing portion ran 60% of the labor. Here is how the mitigator approached it.

    Published June 6, 2026 · Norwood

  16. Case study · 6 min read

    A multi-zone Indian Hill custom build: when one suction pit is not enough

    A 2003 5,200 sqft Indian Hill custom home with a full basement under the main wing and a separate crawl space under the master suite read 9.1 pCi/L. The mitigation needed two zones, two suction points, and two fans. Here is the design.

    Published May 30, 2026 · Indian Hill

  17. Case study · 6 min read

    An Anderson Township hillside basement: how foundation drainage interacts with radon mitigation

    A 1988 walkout-basement home on a 12% slope read 7.4 pCi/L. The mitigation had to coordinate with the existing French drain and sump pump. Here is what got found, what got built, and what changed.

    Published May 23, 2026 · Anderson Township

  18. Case study · 5 min read

    A West Chester new build with a passive radon stack: when fan-only activation is the right answer

    A 2018 West Chester home tested at 5.2 pCi/L despite having a builder-installed passive radon stack. The fix took 3 hours and cost $850. Here is the install and the math against full-system alternatives.

    Published May 16, 2026 · West Chester

  19. Case study · 6 min read

    A Loveland slab with a crawl-space addition: when one mitigation strategy is not enough

    A 1995 Loveland ranch had a 1998 master-suite addition with a crawl space below it. Initial test came back at 6.8 pCi/L. The mitigator had to design two systems sharing a single fan. Here is the layout, the build, and the post-mitigation reading.

    Published May 9, 2026 · Loveland

  20. Case study · 6 min read

    A Hyde Park basement that tested at 14 pCi/L: what happened next

    A 1924 four-square in Hyde Park measured 14.2 pCi/L on the homeowner's first 48-hour test, more than triple the EPA action level. Here is the full sequence of what got found, what got installed, and what the post-mitigation numbers came back at.

    Published May 8, 2026 · Hyde Park

  21. Case study · 5 min read

    Closing in 8 days with a failed radon test: a real-estate timeline

    Buyer's inspection in Mariemont came back at 8.7 pCi/L on day 12 of a 14-day inspection contingency window. The realtor reached our dispatch line at 4:30 PM. Here is what the next 8 days looked like, day by day.

    Published May 7, 2026 · Mariemont

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