Biloxi, Mississippi, sits along the Gulf Coast in Harrison County, an area where radon levels can be surprisingly elevated despite the coastal geography. While many assume radon is only a concern for inland, mountainous regions, Mississippi’s soil composition—rich in granite, shale, and sandstone—can produce significant radon concentrations. The U.S. EPA has mapped much of coastal Mississippi as Zone 2 or Zone 3, meaning moderate to low potential, but local geology and building construction (slab-on-grade, pier and beam, crawl spaces) create pockets of high readings. The Biloxi real estate market is active, with a mix of older historic homes, new beachfront condos, and suburban developments. Home buyers and sellers are increasingly aware of radon risks, especially after the 2021 EPA updates and local news coverage. However, the testing market remains underserved. Few dedicated radon testing businesses exist in Biloxi; most testing is performed by home inspectors or mitigation companies based in Gulfport or Mobile. This gap presents an opportunity for a specialized radon testing service that focuses on fast, accurate results and local expertise. The target customers include home buyers (often requiring testing as part of a real estate transaction), homeowners concerned about lung cancer risks, and property management firms for rental units.
Mississippi does not currently have a state licensing or certification program for radon testing professionals. Unlike Illinois or Ohio, there is no mandatory state exam or registration. However, this does not mean you can operate without standards. To build credibility and avoid liability, you should obtain certification from a nationally recognized body such as the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB). These certifications require passing an exam, completing a training course, and adhering to EPA protocols. The Mississippi Department of Health (MSDH) and the Mississippi Department of Environmental Quality (MDEQ) do not actively regulate radon testing, but they do provide guidance documents. You must still comply with general business licensing.
Any business operating within Biloxi city limits must obtain a privilege license from the Biloxi Revenue Department. You will need to file a Business License Application, provide proof of liability insurance, and pay an annual fee (typically $50–$150 depending on business type). If you operate from a home office, you may need a Home Occupation Permit. Check with the Biloxi Planning Department for zoning restrictions. Additionally, if you hire employees, you must register with the Mississippi Department of Employment Security for unemployment tax and with the Mississippi Department of Revenue for state sales tax collection (though radon testing services are generally exempt from sales tax).
Mississippi law does not require radon testing as part of real estate transfers, but sellers are required to disclose known radon problems if asked. You should carry general liability insurance (minimum $1 million) and professional liability insurance (errors & omissions). Also, if you handle testing in a home that later has a radon issue, you could be sued for negligence. Join the Mississippi Radon Association (if available) or the American Association of Radon Scientists and Technologists (AARST) for updated legal info.
Go to google.com/business and create a new listing. Use your physical Biloxi address (or a virtual office if you do home-based testing). Choose the primary category “Radon Testing Service” (if it appears; otherwise use “Environmental Testing Laboratory” or “Home Inspector”). Verify your business via postcard from Google. If you provide testing only (no mitigation), you can list as a service-area business (SAB) and hide your home address for privacy.
Fill in your business name exactly as it appears elsewhere (NAP consistency): “Biloxi Radon Testing” or “Coast Radon Solutions.” Add your phone number with a local area code (228), your website URL, and your business hours (typical 8 a.m. to 6 p.m., Monday–Friday, plus Saturday by appointment). Write a detailed description of 750 characters that includes keywords: “radon testing Biloxi,” “short-term and long-term tests,” “EPA-certified,” “home buyer radon inspection.” Add service areas: Biloxi, Gulfport, Ocean Springs, Long Beach, Pass Christian, D’Iberville, St. Martin, and all of Harrison County.
Upload high-quality images: your testing equipment (e.g., continuous radon monitor, charcoal canisters), a picture of you in a professional setting, examples of test reports, and a map of your service area. Add a short video explaining the testing process and why Biloxi homeowners should test.
Reviews are the #1 local ranking factor. Ask every customer for a Google review. Offer a small discount (e.g., 10% off next test) as a thank-you. Respond to all reviews within 24 hours, especially negative ones—address issues politely and offer a retest.
Use Google Posts to share seasonal tips (e.g., “Winter is the best time to test for radon in Biloxi because homes are sealed tight”), announce promotions, and link to blog articles about radon in Mississippi.
Build a simple website with pages targeting specific keywords. The homepage should focus on “radon testing Biloxi MS
Run a free GBP audit, analyze your competitors, and track your review growth — all in one platform.
Try BizLaunchIQ Free →