Radon Testing Shelby County
Radon Testing in Shelby County — Alabaster, Pelham, Helena, Calera
The short version: Radon testing Shelby County — $295 flat, a sealed 48-hour monitor, a certified lab report usually back about an hour after pickup. Shelby is one of Alabama's 15 highest-potential radon counties AND has the newest housing in the metro — both are true at once, and neither one cancels out the other. We only test; we don't sell or install mitigation systems, so nothing about your number moves our business either way.
ADPH names Shelby among Alabama's 15 highest-potential radon counties.
$295
flat rate, every time
48hrs
minimum test duration
What The Data Says
About 1 in 9 Shelby Homes Test at or Above the Action Level
CDC lab-test data for Shelby County, 2008-2017 (n ≈ 283).
11.3%
tests at or above 4 pCi/L
1.9pCi/L
county average
14.6pCi/L
highest reported reading
The average U.S. home reads about 1.3 pCi/L. Shelby's average is 1.9 — but the average isn't the point. The tail is. Just over 1 in 9 reported tests came back at or above the EPA action level of 4 pCi/L. That's really the question you're asking when you test one house: not what the county average is, but which side of the line your house is on.
The Process
Your 48 Hours
Two short visits and one quiet, uninterrupted test in between.
We place the sealed monitor
About 15 minutes.
It runs for 48 quiet hours
You live normally — keep windows closed, HVAC is fine.
We pick it up
Another 15 minutes.
An independent lab reads the data
Your report lands by email, usually within about an hour of upload.
Your Result
What Your Number Means
Every report lands in one of three zones, measured against the EPA action level.
U.S. average indoor level is about 1.3 pCi/L (per EPA/ADPH).
Below 2.0 pCi/L
No action needed
No action needed.
2.0–3.9 pCi/L
EPA suggests considering fixes
EPA suggests considering fixes; retesting is reasonable.
4.0+ pCi/L
EPA action level
EPA action level — mitigation recommended, retest after.
New Construction Doesn't Get A Pass
Why New Construction Doesn't Get a Pass
Shelby is where the metro grew. Between the 2010 and 2020 Censuses, Chelsea grew 47.1%, Calera 41.9%, and Westover 38.5% — which means a big chunk of Shelby's houses are less than fifteen years old. That's good news for a lot of building systems, but radon is a soil-gas story, not a construction-age story. The 11.3% ≥ 4 pCi/L rate is what the county is producing with that newer housing mix already baked in.
ADPH puts it plainly: "radon levels can vary greatly from home to home — even levels next door can be very different." A new-build slab in Calera and a 1990s ranch in Alabaster sit on the same geology; whether either one comes back high is a house-by-house question, not a subdivision-by-subdivision one.
Coverage
Where We Test in Shelby County
From Alabaster and Pelham along US-31 to Chelsea and Westover on the 280 corridor, out to Calera, Montevallo, and Columbiana — Shelby County is regular service area for us.
Cities served
- Alabaster
- Pelham
- Helena
- Chelsea
- Calera
- Columbiana
- Montevallo
- Harpersville
- Wilsonville
- Westover
- Indian Springs Village
ZIP codes served
- 35007
- 35040
- 35043
- 35051
- 35078
- 35080
- 35114
- 35115
- 35124
- 35143
- 35147
- 35176
- 35178
- 35186
- 35242
Why Independent
Why an Independent Radon Tester in Shelby
We only test. No mitigation systems, no inspection bundle, no upsell if your number comes back high. For most companies in this market, radon is a side line to something else they sell. Testing is our whole job — so the result you get has nothing riding on which way it goes.
Every Shelby test runs on a sealed, lab-read monitor: we place it, an independent lab reads it, and we never grade our own test. That separation is what makes the report something a buyer, a seller, and both agents can trust at the same time.
Buying or Selling in Shelby
Alabaster, Pelham, and the 10-Day Window
Most Alabama purchase contracts give the buyer about ten days to inspect the home and negotiate repairs. A radon test needs to fit inside that window: 48 hours of measurement, pickup, and a lab report — the exact rhythm we schedule around. Nights and weekends work for placement or pickup, so a call on Monday usually has the report back before your inspection window closes.
Alabama doesn't require radon disclosure on a home sale and doesn't license radon pros either — the credentials to look for are NRPP or AARST, and the report should be lab-read, not graded by the same person selling you the mitigation system.
Agents working Alabaster, Pelham, Helena, Chelsea, Calera, or the 280 corridor — see our page built for agents. For the step-by-step, see how radon testing works, or what a radon test costs in the metro. For the wider metro picture see radon testing in Birmingham, and to look up your ZIP's ADPH average see Alabama radon levels by ZIP code.
Get Tested
Schedule independent radon testing in Shelby County.
FAQ
Frequently Asked Questions
Is radon really a Shelby County problem, or mostly a north-Alabama one?
It's very much a Shelby County problem. Shelby is on ADPH's list of Alabama's 15 highest-potential radon counties, and in CDC's 2008-2017 data, 11.3% of the ~283 tests reported in Shelby came back at or above the EPA action level of 4 pCi/L — about 1 in 9 homes. That's a little higher than neighboring Jefferson County, not lower.
My house is only a few years old. Doesn't new construction stop radon?
No. Radon comes up through the soil under the foundation. Shelby County has the newest housing in the metro — Chelsea grew 47.1% and Calera 41.9% between 2010 and 2020 — but the measured elevated-test rate is still 11.3%. A modern slab sits right on the ground, and small cracks or utility openings still let soil gas in. EPA and ADPH both say to test every home no matter how old it is.
Do you cover Alabaster, Pelham, Helena, Chelsea, and Calera?
Yes — all of them, plus Montevallo, Columbiana, Harpersville, Wilsonville, Indian Springs Village, and Westover. Anywhere in Shelby County is regular service area. Hoover addresses on the Shelby side of the line and the Highway 280 corridor are covered too.
What if my house is on a crawl space instead of a slab or basement?
We still test. Radon can move up through the crawl space's vapor barrier into the living area the same way it moves through a slab. The placement rules (lowest living level, house closed up for 12 hours before, quiet 48-hour test) don't change based on foundation type — and neither does the $295 price.