ACAC COUNCIL-CERTIFIED · IICRC CERTIFIED · INDEPENDENT RADON TESTING SINCE 2009
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Cobb County, including Marietta, sits in one of Georgia’s elevated radon areas, where the underlying geology contributes to higher radon potential across the county’s housing stock. Whether you’re in an older West Cobb ranch or a newer East Cobb subdivision, a certified test is the only way to know your number.
Jeremy Shelton has been testing Marietta homes for indoor air quality problems since 2009. He founded SafeAir after discovering a mold infestation in his own crawlspace had affected his health for more than a year. Radon is different from mold in every way but one: you can’t know it’s there without a test.
SafeAir provides ACAC & IICRC-certified radon testing across Marietta with results in 48-72 hours. We test and report. We do not mitigate.
Know your number
A certified consultant responds within one business day.
Yes, and Cobb County’s geology is a key factor.
Marietta and Cobb County sit in EPA Zone 1, the highest risk designation, where average indoor radon screening levels are predicted to exceed 4.0 pCi/L. The EPA action level is 4.0 pCi/L. The crystalline rock geology underlying Cobb County is the primary driver of this elevated potential.
Marietta’s housing stock spans more than a century, from older neighborhoods near Marietta Square to mid-century ranch homes in West Cobb and newer subdivisions throughout East Cobb. Radon enters through crawlspace openings, slab penetrations, and foundation joints regardless of construction era. Results vary by property: a calibrated test gives you your specific number.
Zone data gives you a probability. A test gives you your actual number.
According to the U.S. EPA, radon is the second leading cause of lung cancer in the United States.
The range of construction eras across Marietta is what makes neighborhood-level generalizations unreliable here.
Older neighborhoods near Marietta Square and Whitlock Avenue include ranch and bungalow homes with open crawlspace foundations. Cobb County’s Zone 1 geology makes crawlspace homes here among the most likely configurations to test at or above the EPA action level.
1980s-1990s subdivisions in areas like Sprayberry and Johnson Ferry frequently use slab-on-grade construction. Cobb County’s Zone 1 classification means even slab homes test elevated more often than in lower-risk metro areas.
Newer construction in East Cobb and the Marietta city limits is built to energy-efficient standards. Tighter sealing concentrates whatever radon enters through the foundation. Zone 1 geology makes baseline testing especially important in these homes.
Some of Marietta’s larger and older properties near Indian Hills and Powers Ferry include basements. Basement-foundation homes in Zone 1 counties like Cobb consistently produce the highest radon concentrations and should be tested first.
Whatever your home type, the continuous monitor goes in your lowest livable level. The result is specific to your property, your foundation, your soil.
Jeremy or a SafeAir consultant places a calibrated continuous monitoring device in the lowest livable level of your home. The device records radon readings hour by hour over 48 hours.
Continuous electronic monitors produce significantly more data than charcoal canister kits. Their results are accepted by lenders, buyers’ agents, and real estate attorneys throughout Georgia. The $15 UGA Extension kit works for general awareness. It does not work for real estate transactions.
After device pickup, your written report arrives within 24 hours. It documents your radon level, testing conditions, and the inspector’s certification. A SafeAir consultant reviews the findings with you directly.
You do not need to be home during the 48-hour measurement period.
Calibrated continuous monitor set in your lowest livable level.
Hour-by-hour readings recorded. No need to be home.
Certified written report, reviewed with you directly.
Radon comes up on most Marietta contracts now. Buyers’ agents request it. Some lenders require it. The due diligence window on most Georgia contracts runs 7–10 days.
What matters in that window: you need an independent result. A company that tests and sells mitigation has a financial reason to find a problem. SafeAir tests and reports only. If the result is below 4.0 pCi/L, you’re done. If it’s above, you know before closing and you negotiate from that position.
Mitigation in Marietta typically runs $800–$2,500 depending on foundation type and system design. Knowing the number before you close is leverage. Discovering it after is not.
If scheduling is time-sensitive, note your closing date in the form. SafeAir prioritizes contingency-window requests.
SafeAir does not sell radon mitigation systems. That is a deliberate choice.
Most radon companies test and mitigate. That creates a conflict: the company that finds a problem also profits from solving it. Jeremy built SafeAir to remove that conflict. He reports what the monitor records, regardless of the result. If your test comes back elevated, he explains what the number means and what your options look like. You choose your mitigator independently.
Jeremy holds certifications through ACAC (Certified Indoor Environmental Consultant, Certified Microbial Consultant) and IICRC. He has been testing indoor air quality in Georgia homes since 2009.
SafeAir tests homes and properties throughout Marietta and Cobb County, including:
If your neighborhood isn’t listed, we still test there.
Marietta and Cobb County sit in EPA Zone 1, the highest risk designation, where average indoor radon screening levels are predicted to exceed 4.0 pCi/L. The underlying crystalline rock geology in Cobb County contributes to this elevated potential. Results still vary significantly between individual homes and neighborhoods. A calibrated, certified test is the only way to know your specific radon level.
There are none. Radon is odorless, colorless, and produces no symptoms you would connect to it. Long-term exposure is cumulative. The only way to know if radon is present at an elevated level is a certified test.
Contact SafeAir for current pricing. For context: professional continuous monitor testing in the Marietta area typically runs $150-$300. The UGA Extension Program offers $15 charcoal kits for general screening, but those results are not accepted in most real estate transactions.
SafeAir uses 48-hour continuous electronic monitors. Your written report is typically delivered within 24 hours of device pickup. Most Marietta clients have results in hand within 3-4 days of scheduling.
The EPA recommends mitigation at that level. SafeAir provides the test and the result. We do not sell mitigation systems. If your result is elevated, we explain what it means and what your options are. Mitigation in Marietta typically costs $800-$2,500 depending on foundation type.
Georgia has no state law requiring radon disclosure or testing for home sales. However, buyers increasingly request it during due diligence, and some lenders require it on certain loan types. If a buyer requests a test and the contingency window is open, completing it before that window closes protects your transaction.
Jeremy has tested hundreds of Georgia homes since 2009.
No obligation. No upsell. Just a certified result you can trust.
