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Find Radon gas testers in Centreville

Avatar for In and Out Home Inspections, LLC

In and Out Home Inspections, LLC

11722 Back Creek Road
4.86(
85
)
•Approved Pro

In and Out Home Inspections, LLC

11722 Back Creek Road
4.86(
85
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
61 local quotes requested

Here at, In and Out Home Inspections, LLC, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Our inspector did an excellent job with inspecting the home. He proved to be knowledgeable and offered recommendations for improvements."

Maurice on October 2025

Here at, In and Out Home Inspections, LLC, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

"Our inspector did an excellent job with inspecting the home. He proved to be knowledgeable and offered recommendations for improvements."

Maurice on October 2025

Avatar for Mid-Atlantic Mold and Restoration

Mid-Atlantic Mold and Restoration

14820 Buckingham Court
5.00(
17
)
•Approved Pro

Mid-Atlantic Mold and Restoration

14820 Buckingham Court
5.00(
17
)
•Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
24 years of experience

MMR is nationally certified, fully insured and specializes in all aspects of mold remediation and restoration. Unlike most mold companies, MMR offers free inspections and appointments at specific times (no 4 hour appt windows!). Most projects can begin the next day or a time convenient to you. MMR does not use sub-contractors or undocumented workers at any time. All employees are highly trained and very polite. We will leave your home or business clean and sanitary.

"Overall, job paid for was complete. Hoped getting the wall put back together was an option, but removing the mold was important"

Johnathan L on September 2023

MMR is nationally certified, fully insured and specializes in all aspects of mold remediation and restoration. Unlike most mold companies, MMR offers free inspections and appointments at specific times (no 4 hour appt windows!). Most projects can begin the next day or a time convenient to you. MMR does not use sub-contractors or undocumented workers at any time. All employees are highly trained and very polite. We will leave your home or business clean and sanitary.

"Overall, job paid for was complete. Hoped getting the wall put back together was an option, but removing the mold was important"

Johnathan L on September 2023

Avatar for Lawson Home Services, LLC

Lawson Home Services, LLC

115 Atlantic Avenue
4.63(
35
)
•Approved Pro

Lawson Home Services, LLC

115 Atlantic Avenue
4.63(
35
)
•Approved Pro
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
220 local quotes requested

Full service Radon testing and mitigation, air duct and dryer vent cleaning, and blown-in attic insulation company. We service the entire state of Delaware and eastern Maryland.

"Very professional, knowledgeable, courteous and very customer focused. Would definitely use their services again!"

Chris A on November 2023

Full service Radon testing and mitigation, air duct and dryer vent cleaning, and blown-in attic insulation company. We service the entire state of Delaware and eastern Maryland.

"Very professional, knowledgeable, courteous and very customer focused. Would definitely use their services again!"

Chris A on November 2023

Avatar for NextDay Inspect

NextDay Inspect

46179 Westlake Dr
4.95(
306
)
•Approved Pro

NextDay Inspect

46179 Westlake Dr
4.95(
306
)
•Approved Pro
Customers say: True professional
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
1720 local quotes requested

Our goal is to protect our clients' interest by providing a thorough and detailed inspection of the property. Safeguarding our clients' investment is our priority. We provide residential home inspections, commercial building inspections, pre-drywall inspections, radon gas testing, and mold sampling. View the rate for your home inspection and scheduling availability on our website. Home Inspectors at NextDay Inspect® are licensed by the Department of Professional and Occupational Regulation (DPOR) and the Department of Labor, Licensing, and Regulation (DLLR). Upon completing the on-site inspection the inspector will prepare a report, including photographs taken at the property, and arrows with commentary detailing the areas of concern. Specialized tools are used to ensure a thorough inspection of the properties components. Some of these tools are thermometer, moisture & humidity meter, thermal infrared camera, outlet tester. We have an A plus rating with the Better Business Bureau.

"Amazing inspection"

Tim Y on October 2025

Our goal is to protect our clients' interest by providing a thorough and detailed inspection of the property. Safeguarding our clients' investment is our priority. We provide residential home inspections, commercial building inspections, pre-drywall inspections, radon gas testing, and mold sampling. View the rate for your home inspection and scheduling availability on our website. Home Inspectors at NextDay Inspect® are licensed by the Department of Professional and Occupational Regulation (DPOR) and the Department of Labor, Licensing, and Regulation (DLLR). Upon completing the on-site inspection the inspector will prepare a report, including photographs taken at the property, and arrows with commentary detailing the areas of concern. Specialized tools are used to ensure a thorough inspection of the properties components. Some of these tools are thermometer, moisture & humidity meter, thermal infrared camera, outlet tester. We have an A plus rating with the Better Business Bureau.

"Amazing inspection"

Tim Y on October 2025

Insurance Claims Specialist, LLC.

513 46th Street
5.00(
12
)

Insurance Claims Specialist, LLC.

513 46th Street
5.00(
12
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Insurance Claims Specialist, LLC. is a Maryland Licensed Public Adjusting Firm that represents Home & Business Owners to MAXIMIZE their property damage insurance claim recovery. We work EXCLUSIVELY for the Home or Business Owner, NOT the insurance company, to negotiate the very best settlement with their insurance company for our clients. We handle ALL types of Property Damage Insurance Claims and specialize in DENIED Insurance Claims & Lowballed Insurance Claims representation. We also provide Insurance Appraisal & Umpires Services and are a Maryland Licensed Home Improvement / Insurance Restoration Contractor that performs all types of repair, restoration, mitigation and rebuild services. Specializing in Insurance Claim Restoration. We handle Insurance Claims / Repairs / Rebuilds for all types of property damage. Including Fire, Water and Flood, Mold, Freeze, Wind / Storm and Hurricane, Burst Pipe and Vandalism damage, etc... Call Now for a FREE Insurance Claim Consultation. No Recovery, No Fee

"Simply put, hiring Insurance Claims Specialist, LLC was one of the most important decisions we made in getting our roof damage resolved. We are responsible homeowners with a strong track record of maintaining our house and property, as well as making sure we have proper insurance coverage. But when weather damaged our roof and our insurance provider denied our claim, we found ourselves in uncharted territory. The process with the insurance provider was daunting, confusing, lengthy, stressful, and not transparent. We were kept at arms length and passed through multiple reviewers. They sent a third-party engineer who showed up unannounced, spent very little time inspecting the damage, and then submitted a report that had numerous factual errors. That report then became a baseline for the insurance company! We were buried in red tape and going in circles. Wayne was able to quickly step in and, using his extensive expertise and knowledge of the regulations and insurance process, got right to the point. As a respected, experienced adjuster, his analysis and steadfast conclusions carried weight. In what could have been a disputed claim that may have taken years to resolve, he cut through the red tape and was able to resolve the matter in our favor within months. In a world where home owners are kept at arms length and treated with skepticism, Wayne was treated with respect as a knowledgeable expert whose views were grounded in experience. When he spoke, people listened. Wayne was very candid and responsive to us. He kept us out of the process details and acted as our representative, while keeping us appropriately informed. He made the process much less stressful! He got the right people to listen and move forward with the right decision. Again, one of the best decisions we’ve made. We highly recommend Insurance Claims Specialist, LLC without reservation."

Sid H on August 2023

Insurance Claims Specialist, LLC. is a Maryland Licensed Public Adjusting Firm that represents Home & Business Owners to MAXIMIZE their property damage insurance claim recovery. We work EXCLUSIVELY for the Home or Business Owner, NOT the insurance company, to negotiate the very best settlement with their insurance company for our clients. We handle ALL types of Property Damage Insurance Claims and specialize in DENIED Insurance Claims & Lowballed Insurance Claims representation. We also provide Insurance Appraisal & Umpires Services and are a Maryland Licensed Home Improvement / Insurance Restoration Contractor that performs all types of repair, restoration, mitigation and rebuild services. Specializing in Insurance Claim Restoration. We handle Insurance Claims / Repairs / Rebuilds for all types of property damage. Including Fire, Water and Flood, Mold, Freeze, Wind / Storm and Hurricane, Burst Pipe and Vandalism damage, etc... Call Now for a FREE Insurance Claim Consultation. No Recovery, No Fee

"Simply put, hiring Insurance Claims Specialist, LLC was one of the most important decisions we made in getting our roof damage resolved. We are responsible homeowners with a strong track record of maintaining our house and property, as well as making sure we have proper insurance coverage. But when weather damaged our roof and our insurance provider denied our claim, we found ourselves in uncharted territory. The process with the insurance provider was daunting, confusing, lengthy, stressful, and not transparent. We were kept at arms length and passed through multiple reviewers. They sent a third-party engineer who showed up unannounced, spent very little time inspecting the damage, and then submitted a report that had numerous factual errors. That report then became a baseline for the insurance company! We were buried in red tape and going in circles. Wayne was able to quickly step in and, using his extensive expertise and knowledge of the regulations and insurance process, got right to the point. As a respected, experienced adjuster, his analysis and steadfast conclusions carried weight. In what could have been a disputed claim that may have taken years to resolve, he cut through the red tape and was able to resolve the matter in our favor within months. In a world where home owners are kept at arms length and treated with skepticism, Wayne was treated with respect as a knowledgeable expert whose views were grounded in experience. When he spoke, people listened. Wayne was very candid and responsive to us. He kept us out of the process details and acted as our representative, while keeping us appropriately informed. He made the process much less stressful! He got the right people to listen and move forward with the right decision. Again, one of the best decisions we’ve made. We highly recommend Insurance Claims Specialist, LLC without reservation."

Sid H on August 2023

Ebright Engineering

348 Sunnyside Ln
No reviews yet

Ebright Engineering

348 Sunnyside Ln
No reviews yet
Free onsite estimate

Independent Mold Inspection and Testing. Got mold? Got musty smell? Feel sick? You may consider calling an independent mold inspector who is not interested in selling you more than $10,000 worth of remediation. We are offering you a certified professional and independent opinion, inspection, testing and reporting regarding your mold problem. We work 7 days a week at any time convenient for you. Do not delay the inspection if you suffer from an allergy, asthma, sick building syndrome (SDS), acute respiratory infection or your immune system is weakened. Call, text or e-mail us.

Independent Mold Inspection and Testing. Got mold? Got musty smell? Feel sick? You may consider calling an independent mold inspector who is not interested in selling you more than $10,000 worth of remediation. We are offering you a certified professional and independent opinion, inspection, testing and reporting regarding your mold problem. We work 7 days a week at any time convenient for you. Do not delay the inspection if you suffer from an allergy, asthma, sick building syndrome (SDS), acute respiratory infection or your immune system is weakened. Call, text or e-mail us.

Maryland Flood Restoration

2528 Ashbrook Dr
5.00(
26
)

Maryland Flood Restoration

2528 Ashbrook Dr
5.00(
26
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

During the COVID-19 outbreak, we are considered an essential service and are taking extra precautions with your health and safety in mind. Please call us today for more details. We would love to speak with you about home projects and scheduling options. **Call us today for a FREE ESTIMATE!** With over 25 years of combined experience, we're confident you'll be happy with the customer service we offer and the overall craftsmanship of our work. We provide cleanup/drying services for your smoke, water, and mold emergencies. Contact 24/7. We can work directly with your insurance company in order to expedite and simplify the claim process. Call us today, and you'll be glad you did!

"This business is excellent. Fixed our leak quickly and well."

Marina B on November 2022

During the COVID-19 outbreak, we are considered an essential service and are taking extra precautions with your health and safety in mind. Please call us today for more details. We would love to speak with you about home projects and scheduling options. **Call us today for a FREE ESTIMATE!** With over 25 years of combined experience, we're confident you'll be happy with the customer service we offer and the overall craftsmanship of our work. We provide cleanup/drying services for your smoke, water, and mold emergencies. Contact 24/7. We can work directly with your insurance company in order to expedite and simplify the claim process. Call us today, and you'll be glad you did!

"This business is excellent. Fixed our leak quickly and well."

Marina B on November 2022

Moldlab

2501 Mayes Road
4.74(
352
)

Moldlab

2501 Mayes Road
4.74(
352
)
Customers say: True professional
25 years of experience

Mold identification, mold test kits and testing supplies. If you suspect you have a mold problem give us a call toll free and we can walk you through your testing options.

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."

Jessica H on February 2018

Mold identification, mold test kits and testing supplies. If you suspect you have a mold problem give us a call toll free and we can walk you through your testing options.

"The self-test product was as expected. The reports require additional research to interpret and understand, so seemed more targeted at professionals."

Jessica H on February 2018

MCDCopperwood Construction LLC

14220 Metasequoia Ct
No reviews yet

MCDCopperwood Construction LLC

14220 Metasequoia Ct
No reviews yet
46 years of experience

MCDCopperwood Const. has been building homes and offices for 30 years. An EPA Certified Lead Firm lic NAT-F111233-1. MHIC lic 105090 MHBR lic 6914 Delaware lic6772 We accept all credit cards.

MCDCopperwood Const. has been building homes and offices for 30 years. An EPA Certified Lead Firm lic NAT-F111233-1. MHIC lic 105090 MHBR lic 6914 Delaware lic6772 We accept all credit cards.

Baker Home Inspection Inc.

5537 Mount Hermon Church Rd.
5.00(
3
)

Baker Home Inspection Inc.

5537 Mount Hermon Church Rd.
5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Complete home and property inspections. 27 years experience in the home building/construction industry. Member of the National Association of Home Inspectors. American Home Inspectors Training Institute Certified. We inspect everything from the grounds to the roof and everything in between. All of our inspections meet or exceed the ASHI standards of practice and code of conduct.

"Mr. Baker was truly amazing and professional and made it very clear that he worked for me the client and he was very detailed in his inspection and let me tag along with him and explained everything. Because of his inspection it showed major problems with the home we were going to buy. My wife and I truly thank Paul because of him and his inspection we avoided buying a money pit home we will use him again when we find the next home we wana buy which will be very soon. If you want an honest person who has your best interest in hand I promise you won't regret hiring Mr. PAUL BAKER."

Jordan H on April 2018

Complete home and property inspections. 27 years experience in the home building/construction industry. Member of the National Association of Home Inspectors. American Home Inspectors Training Institute Certified. We inspect everything from the grounds to the roof and everything in between. All of our inspections meet or exceed the ASHI standards of practice and code of conduct.

"Mr. Baker was truly amazing and professional and made it very clear that he worked for me the client and he was very detailed in his inspection and let me tag along with him and explained everything. Because of his inspection it showed major problems with the home we were going to buy. My wife and I truly thank Paul because of him and his inspection we avoided buying a money pit home we will use him again when we find the next home we wana buy which will be very soon. If you want an honest person who has your best interest in hand I promise you won't regret hiring Mr. PAUL BAKER."

Jordan H on April 2018

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FAQs for radon gas testing projects in Centreville, MD

Radon is the second leading cause of lung cancer in the U.S. The gas seeps through cracks in foundations and collects in basements and other low areas. Once you breathe it in, radioactive particles lodge in lung tissue and do long-term damage. Because you can’t see or smell radon, the EPA recommends testing your home every two years—and after major renovations—to keep your family safe.

Yes—every home should be tested. The EPA advises doing it at least every two years and any time you remodel, buy, or sell. On average, one in 15 houses nationwide sits above the recommended limit, and the only way to know where yours stands is a formal test. The equipment simply measures gas levels and won’t change your indoor environment, so the process is completely harmless.

Certified radon professionals—often home inspectors or dedicated radon mitigation contractors—handle testing. These radon testing professionals follow EPA protocols and use calibrated instruments to check levels throughout your house. Hiring a certified radon specialist means results you can trust for real estate deals, insurance requirements, and, most importantly, your family’s health.

Inspectors specialize in measuring radon gas levels, while licensed mitigation contractors design and install the systems that remove it. If your test comes back high, your inspector can point you to a qualified mitigation pro who will size and install the right fan, piping, or other equipment to bring levels down.

No—standard home air purifiers don’t touch radon. They’re built to trap dust and pollen, not radioactive gas. If testing shows high levels, you’ll need a dedicated mitigation system that vents the gas from beneath your home to the outdoors. Relying on a room purifier alone won’t keep your indoor air safe.

Opening a few windows in your home might dilute radon for a short time, but the gas seeps back in as soon as they’re closed. For a lasting fix, you’ll need a professional mitigation system—often a sub-slab depressurization fan—that pulls radon from beneath the foundation and safely vents it outside.

The Centreville, MD homeowners’ guide to radon gas testings

From average costs to expert advice, get all the answers you need to get your job done.

See all articles