Top-rated radon detection and reduction specialists.

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Radon detection and reduction specialists in Washington DC

Avatar for DRO Services LLC
DRO Services LLC
2611 Fenimore RD
5.00(
17
)
Approved Pro
DRO Services LLC
2611 Fenimore RD
5.00(
17
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 local quotes requested

DRO Services LLC is an Owner Operated business that specializes in general home inspections. I have been in business for almost 10 years and provide a courteous and on-time service. I will make sure to give you an honest quote and explain the more important aspects of maintenance and safety that you will need to know about your home. We provide radon testing services. We do not provide any radon remediation services.

"Very professional and done exactly on time."

charles S on February 2024

DRO Services LLC is an Owner Operated business that specializes in general home inspections. I have been in business for almost 10 years and provide a courteous and on-time service. I will make sure to give you an honest quote and explain the more important aspects of maintenance and safety that you will need to know about your home. We provide radon testing services. We do not provide any radon remediation services.

"Very professional and done exactly on time."

charles S on February 2024


Avatar for Adam Contracting
Adam Contracting
8494 Signal Hill Rd Suite A
4.59(
160
)
Approved Pro
Adam Contracting
8494 Signal Hill Rd Suite A
4.59(
160
)
Approved Pro
Customers say: Quality work
23 local quotes requested
17 years of experience

My name is Justin LeBlanc, and I am the owner and operator of Adam Contracting. Adam Contracting considers customer satisfaction our highest priority, and we make sure that, as a client, you are satisfied not only with the affordability but the quality of our work. Adam Contracting is a fully licensed and insured company. Please feel free to contact us anytime for an estimate!

"My only regret is not hiring Adam Contracting sooner. From the beginning of the project, I was updated on the schedule and cost. All of the employees were professional, and skilled, and left my house clean after each task. If I had issues or noticed something that needed to be changed the owner addressed the concern immediately. I am very happy with the finished project!"

Nia W on November 2022

My name is Justin LeBlanc, and I am the owner and operator of Adam Contracting. Adam Contracting considers customer satisfaction our highest priority, and we make sure that, as a client, you are satisfied not only with the affordability but the quality of our work. Adam Contracting is a fully licensed and insured company. Please feel free to contact us anytime for an estimate!

"My only regret is not hiring Adam Contracting sooner. From the beginning of the project, I was updated on the schedule and cost. All of the employees were professional, and skilled, and left my house clean after each task. If I had issues or noticed something that needed to be changed the owner addressed the concern immediately. I am very happy with the finished project!"

Nia W on November 2022


Avatar for Exceptional Restoration Services
Exceptional Restoration Services
43671 Trade Center Place, Suite 152
4.33(
21
)
Approved Pro
Exceptional Restoration Services
43671 Trade Center Place, Suite 152
4.33(
21
)
Approved Pro
Customers say: Quick response
254 local quotes requested
10 years of experience

For quickest response, please call 703-789-2240.  At Exceptional Restoration Services, we understand that when disaster strikes, it’s not just about repairing property—it’s about restoring peace of mind. That’s why we treat every client like family. Whether you’re dealing with water damage, fire destruction, or mold concerns, we are here to provide expert solutions tailored to your needs. Serving homeowners and businesses across Fairfax County and Loudoun County, Virginia, we’re proud to be a trusted partner in helping you navigate challenging times. From the moment you call us, you can rest assured that our team of certified professionals will be there to guide you through every step of the restoration process. WHY CHOOSE US When life throws the unexpected your way—whether it’s a burst pipe, a devastating fire, or stubborn mold taking hold—you don’t have to face it alone. Exceptional Restoration is here to help, 24/7. We know how stressful and overwhelming these situations can be, which is why our team is committed to being by your side every step of the way. From the moment you call, we spring into action. Whether it’s the middle of the night or a holiday weekend, we’re just a phone call away. Why? Because disasters don’t wait, and neither should you. Our team is fully certified by the Institute of Inspection, Cleaning, and Restoration Certification (IICRC)—a trusted leader in the restoration industry for over 30 years. This means you’re not just hiring a company; you’re partnering with skilled experts who have the knowledge and tools to get your property back to normal quickly and efficiently.

"The company did an excellent job, but the final report lacked necessary details to sufficiently outline work completed"

Howard M on May 2025

For quickest response, please call 703-789-2240.  At Exceptional Restoration Services, we understand that when disaster strikes, it’s not just about repairing property—it’s about restoring peace of mind. That’s why we treat every client like family. Whether you’re dealing with water damage, fire destruction, or mold concerns, we are here to provide expert solutions tailored to your needs. Serving homeowners and businesses across Fairfax County and Loudoun County, Virginia, we’re proud to be a trusted partner in helping you navigate challenging times. From the moment you call us, you can rest assured that our team of certified professionals will be there to guide you through every step of the restoration process. WHY CHOOSE US When life throws the unexpected your way—whether it’s a burst pipe, a devastating fire, or stubborn mold taking hold—you don’t have to face it alone. Exceptional Restoration is here to help, 24/7. We know how stressful and overwhelming these situations can be, which is why our team is committed to being by your side every step of the way. From the moment you call, we spring into action. Whether it’s the middle of the night or a holiday weekend, we’re just a phone call away. Why? Because disasters don’t wait, and neither should you. Our team is fully certified by the Institute of Inspection, Cleaning, and Restoration Certification (IICRC)—a trusted leader in the restoration industry for over 30 years. This means you’re not just hiring a company; you’re partnering with skilled experts who have the knowledge and tools to get your property back to normal quickly and efficiently.

"The company did an excellent job, but the final report lacked necessary details to sufficiently outline work completed"

Howard M on May 2025


Avatar for Capitol Mold
Capitol Mold
4405 East West Highway #308
5.00(
23
)
Approved Pro
Capitol Mold
4405 East West Highway #308
5.00(
23
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
18 local quotes requested

Capitol Mold takes the high pressure sales tactics used by large remediation companies, and replaces it with honest interactions. We complete honest and in depth analysis of each job and walk you through every step, with evidence. Available from start to finish, from Assessment to Remediation, we make all of it happen seamlessly. Our services includes Remediation and Assessments (Assessments are not completed for AIQ Test Requests, only for potential remediation) (IAQ Testing is better suited for professionals who only perform testing) Testing Minimums included 2 Air-O-Cell Tests ($440 Minimum not including the Control Test) We do work with insurance companies using XACTIMATE. Our Company is fully licensed and insured for Mold Remediation and Assessments. All standards are followed under NORMI Protocol.

"When a leak was fixed that has caused to water to seep through my floorboards, I learned that I likely had mold in the crawlspace area underneath the flooring. I opened this job on Saturday afternoon fully expecting that the necessary mold remediation would be expensive. Murray at CapitolMold responded right away and came the next day on Sunday morning. Murray assessed the situation and explained my options. To my relief, his assessment was that the mold damage was relatively minor. He quoted me for the work and also explained that because the damage was relatively minor, I could do the remediation myself. Murray took the time to explain in detail how to do the work and recommended the necessary materials. I was very impressed with his honesty and willingness to impart his expertise. I highly recommend CapitolMold. I will not hesitate to call them again in the future."

Macon M on November 2024

Capitol Mold takes the high pressure sales tactics used by large remediation companies, and replaces it with honest interactions. We complete honest and in depth analysis of each job and walk you through every step, with evidence. Available from start to finish, from Assessment to Remediation, we make all of it happen seamlessly. Our services includes Remediation and Assessments (Assessments are not completed for AIQ Test Requests, only for potential remediation) (IAQ Testing is better suited for professionals who only perform testing) Testing Minimums included 2 Air-O-Cell Tests ($440 Minimum not including the Control Test) We do work with insurance companies using XACTIMATE. Our Company is fully licensed and insured for Mold Remediation and Assessments. All standards are followed under NORMI Protocol.

"When a leak was fixed that has caused to water to seep through my floorboards, I learned that I likely had mold in the crawlspace area underneath the flooring. I opened this job on Saturday afternoon fully expecting that the necessary mold remediation would be expensive. Murray at CapitolMold responded right away and came the next day on Sunday morning. Murray assessed the situation and explained my options. To my relief, his assessment was that the mold damage was relatively minor. He quoted me for the work and also explained that because the damage was relatively minor, I could do the remediation myself. Murray took the time to explain in detail how to do the work and recommended the necessary materials. I was very impressed with his honesty and willingness to impart his expertise. I highly recommend CapitolMold. I will not hesitate to call them again in the future."

Macon M on November 2024


Avatar for Young Environmental Services
Young Environmental Services
226 S Fairfax St
4.84(
161
)
Approved Pro
Young Environmental Services
226 S Fairfax St
4.84(
161
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
64 local quotes requested

Asbestos Abatement, Mold Remediation VA Class A Asbestos Contractor, License # 2705-114367A, Washington, DC License # 54182xxxx-66000034, Family Owned & Operated, Visa & Mastercard accepted

"They did a great job and were very informative and responsive. Work was done quickly and efficiently."

Challee B on April 2023

Asbestos Abatement, Mold Remediation VA Class A Asbestos Contractor, License # 2705-114367A, Washington, DC License # 54182xxxx-66000034, Family Owned & Operated, Visa & Mastercard accepted

"They did a great job and were very informative and responsive. Work was done quickly and efficiently."

Challee B on April 2023


Avatar for MoldGone LLC
MoldGone LLC
6770 Oak Hall Ln
4.88(
962
)
Approved Pro
MoldGone LLC
6770 Oak Hall Ln
4.88(
962
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
491 local quotes requested

MoldGone is a full service mold inspection, air quality testing, remediation, and reconstruction company with over a decade of experience. Our inspectors and technicians carry the highest and most recognized certifications in the industry. Whether your are a residential or commercial customer seeking mold testing or remediation services you can be assured that the project will be professionally managed and properly certified. There are many companies that offer mold remediation - make sure that the company you choose has an industry recognized mold remediation or inspection certification such as the American Council of Accredited Certification (ACAC) or equivalent. MoldGone is unsurpassed in its commitment to customer service excellence, provision of only the highest caliber service, and providing unsurpassed value in every project or inspection delivered. MoldGone's customers have ranged from the residential homeowner to private schools and churches. In fact, when the Sisters at a private Catholic girls school in the Washington, D.C. area needed a company to treat mold in the Sister's private archive room, complete with 100 year-old manuscripts, they entrusted MoldGone, LLC to do the project. On another project that involved removing mold from a 30 foot ceiling above a filled indoor pool, when the scaffolding company wanted several thousand dollars to build the necessary scaffold to reach the treatment area MoldGone built its own providing the customer significant savings. At MoldGone, LLC. we constantly strive to find the most cost effective way to fully address each and every mold condition. MoldGone technicians are trained specifically for mold treatment and remediation. They are also required to have construction experience since many of our projects involve demolition and reconstruction. Technicians are held to the utmost highest levels of quality with each project receiving a thorough walkthrough by management before it is deemed complete.

"Fantastic"

Evvie B on September 2024

MoldGone is a full service mold inspection, air quality testing, remediation, and reconstruction company with over a decade of experience. Our inspectors and technicians carry the highest and most recognized certifications in the industry. Whether your are a residential or commercial customer seeking mold testing or remediation services you can be assured that the project will be professionally managed and properly certified. There are many companies that offer mold remediation - make sure that the company you choose has an industry recognized mold remediation or inspection certification such as the American Council of Accredited Certification (ACAC) or equivalent. MoldGone is unsurpassed in its commitment to customer service excellence, provision of only the highest caliber service, and providing unsurpassed value in every project or inspection delivered. MoldGone's customers have ranged from the residential homeowner to private schools and churches. In fact, when the Sisters at a private Catholic girls school in the Washington, D.C. area needed a company to treat mold in the Sister's private archive room, complete with 100 year-old manuscripts, they entrusted MoldGone, LLC to do the project. On another project that involved removing mold from a 30 foot ceiling above a filled indoor pool, when the scaffolding company wanted several thousand dollars to build the necessary scaffold to reach the treatment area MoldGone built its own providing the customer significant savings. At MoldGone, LLC. we constantly strive to find the most cost effective way to fully address each and every mold condition. MoldGone technicians are trained specifically for mold treatment and remediation. They are also required to have construction experience since many of our projects involve demolition and reconstruction. Technicians are held to the utmost highest levels of quality with each project receiving a thorough walkthrough by management before it is deemed complete.

"Fantastic"

Evvie B on September 2024


Avatar for Superior Damage Restoration
Superior Damage Restoration
15733 Crabbs Branch Way
4.93(
15
)
Approved Pro
Superior Damage Restoration
15733 Crabbs Branch Way
4.93(
15
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

Fire? Flood? Mold? Biohazard? Call Superior Damage Restoration. We're family-owned and locally-operated. Most importantly, we're ready to restore. Whether you need mold remediation, water mitigation, or reconstruction, we've got you covered. We offer a personal approach that emphasizes transparency and quality. Above all, we want to be at the top of your list for emergency home restoration in Maryland, Washington DC and Northern Virginia. Our services: - Water mitigation - Restoration - Mold remediation - Water proofing - Basement finishing & remodel - Remodeling: living room, bathroom, kitchen and more Find out more and check out great testimonials from our customers on our website: https://superiordamagerestoration.com

"I recently had the pleasure of working with Shawn from Superior Damage Restoration to address a persistent water leak issue in my penthouse duplex unit. The problem was that water was seeping through from under the flooring and down the stairs whenever it rained. Previous contractors had incorrectly suggested that the issue was with the balcony door. Shawn and his team provided a comprehensive explanation of the root cause and took a thorough approach to resolve it. They removed the damaged flooring, waterproofed the balcony door, and even assisted with moving furniture around during the process. Despite their initial efforts, the issue persisted, but they didn't give up. Using thermal devices, they identified that the water was actually coming from the rooftop, down the wall frame studs, and into the floor. Once the true source was identified, they promptly waterproofed the rooftop, and after the next rain, I was relieved to see that no water came through. The team then continued with the flooring work, and Shawn offered an excellent choice of new flooring that perfectly matched the shade of the rest of the unit. I'm extremely satisfied with the work done by Shawn and his team. They were accommodating, responsive, efficient, and pleasant to have around. I'm looking forward to working with them to waterproof other areas of the rooftop to ensure this issue is fully resolved. I highly recommend Superior Damage Restoration for their professionalism and dedication to solving complex problems."

Lana K on March 2024

Fire? Flood? Mold? Biohazard? Call Superior Damage Restoration. We're family-owned and locally-operated. Most importantly, we're ready to restore. Whether you need mold remediation, water mitigation, or reconstruction, we've got you covered. We offer a personal approach that emphasizes transparency and quality. Above all, we want to be at the top of your list for emergency home restoration in Maryland, Washington DC and Northern Virginia. Our services: - Water mitigation - Restoration - Mold remediation - Water proofing - Basement finishing & remodel - Remodeling: living room, bathroom, kitchen and more Find out more and check out great testimonials from our customers on our website: https://superiordamagerestoration.com

"I recently had the pleasure of working with Shawn from Superior Damage Restoration to address a persistent water leak issue in my penthouse duplex unit. The problem was that water was seeping through from under the flooring and down the stairs whenever it rained. Previous contractors had incorrectly suggested that the issue was with the balcony door. Shawn and his team provided a comprehensive explanation of the root cause and took a thorough approach to resolve it. They removed the damaged flooring, waterproofed the balcony door, and even assisted with moving furniture around during the process. Despite their initial efforts, the issue persisted, but they didn't give up. Using thermal devices, they identified that the water was actually coming from the rooftop, down the wall frame studs, and into the floor. Once the true source was identified, they promptly waterproofed the rooftop, and after the next rain, I was relieved to see that no water came through. The team then continued with the flooring work, and Shawn offered an excellent choice of new flooring that perfectly matched the shade of the rest of the unit. I'm extremely satisfied with the work done by Shawn and his team. They were accommodating, responsive, efficient, and pleasant to have around. I'm looking forward to working with them to waterproof other areas of the rooftop to ensure this issue is fully resolved. I highly recommend Superior Damage Restoration for their professionalism and dedication to solving complex problems."

Lana K on March 2024


Avatar for Restoration 1 of Washington DC
Restoration 1 of Washington DC
611 Pennsylvania Ave SE
5.00(
10
)
Approved Pro
Restoration 1 of Washington DC
611 Pennsylvania Ave SE
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
90 local quotes requested

We specialize in water, fire, and smoke damage restoration services, along with mold remediation, water extraction, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Easy 5 star rating, they did a great job! I had a short timeline to accomplish as much remediation as possible. Benji provided effective options to restore our space, his bid was competitively priced and he was very communicative and set honest expectations which he then delivered on. His team (Dequan, David, Maurice and Randy) were so accommodating. I wish every contractor I hired worked this way. Thank you!"

Halley S on June 2023

We specialize in water, fire, and smoke damage restoration services, along with mold remediation, water extraction, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Easy 5 star rating, they did a great job! I had a short timeline to accomplish as much remediation as possible. Benji provided effective options to restore our space, his bid was competitively priced and he was very communicative and set honest expectations which he then delivered on. His team (Dequan, David, Maurice and Randy) were so accommodating. I wish every contractor I hired worked this way. Thank you!"

Halley S on June 2023


Avatar for Boston Environmental & Contracting, Inc
Boston Environmental & Contracting, Inc
1818 New York Ave NE
4.00(
8
)
Approved Pro
Boston Environmental & Contracting, Inc
1818 New York Ave NE
4.00(
8
)
Approved Pro
Customers say: True professional
80 local quotes requested
19 years of experience

Boston Environmental & Contracting, Inc. (BE&C) is a professional environmental services and contracting firm established in 2006. Our mission is to provide excellent environmental and contracting services to meet the diverse needs of our clients that include government agencies, commercial businesses and homeowners in today’s challenging regulatory climate. We offer a wide variety of cost-effective services including environmental consultancy, abatement, remediation, demolition, renovation/remodeling and specialty contracting services to our residential, commercial and government clients throughout the Washington, DC metropolitan area. We accept all major credit cards: VISA, American Express, MasterCard and Discover DC Business License: 70104232

"I did not use them, I don't live in DC"

Edward R on February 2019

Boston Environmental & Contracting, Inc. (BE&C) is a professional environmental services and contracting firm established in 2006. Our mission is to provide excellent environmental and contracting services to meet the diverse needs of our clients that include government agencies, commercial businesses and homeowners in today’s challenging regulatory climate. We offer a wide variety of cost-effective services including environmental consultancy, abatement, remediation, demolition, renovation/remodeling and specialty contracting services to our residential, commercial and government clients throughout the Washington, DC metropolitan area. We accept all major credit cards: VISA, American Express, MasterCard and Discover DC Business License: 70104232

"I did not use them, I don't live in DC"

Edward R on February 2019


Avatar for NextDay Inspect
NextDay Inspect
46179 Westlake Dr
4.95(
263
)
Approved Pro
NextDay Inspect
46179 Westlake Dr
4.95(
263
)
Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
144 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.

"Next days Inspection was the perfect combination of personable, efficient and reliable. Sonya did a great job of setting up and retrieving the testing equipment. Overall, a painless process for a fair price."

William R on May 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.

"Next days Inspection was the perfect combination of personable, efficient and reliable. Sonya did a great job of setting up and retrieving the testing equipment. Overall, a painless process for a fair price."

William R on May 2025

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Radon detection and reduction services FAQs

You can buy DIY radon test kits from a home improvement store and conduct radon testing, but these tests are often inaccurate. No matter the result, you should supplement DIY testing with professional radon detection and analysis. DIYers only have access to passive radon tests, which aren’t as reliable as active tests that professionals use. Plus, it’s very easy for DIYers to make mistakes during testing, leading to inaccurate results. If you’re moving into a new home, have concerns about radon, or are due for an updated test, hire a professional. 

Radon testing costs depend on whether you hire a professional radon inspector or DIY test. You can expect to pay $150 to $800 to hire a local radon inspector, and home-testing kits range in price from $15 to $250 from home improvement stores. However, it’s best to trust a professional inspector with this task to ensure accurate results. Plus, if you have radon in your home, your testing company can develop a mitigation protocol to keep you and your family safe from the dangerous gas, so it’s well worth the money to hire a professional.

If radon is present in your home, you can expect to pay around $1,000 for a radon mitigation system or between $780 and $1,250 in most cases. The exact price will depend on the severity of the radon leak, home size, and the protocol the radon specialist develops to remove radon from your home and keep it out. Your foundation type will also affect your radon mitigation system cost, as unfinished basements will cost about $4,600 to seal and ventilate, while crawl spaces without a foundation slab may need extra encapsulation, costing $1,500 to $15,000.

Yes, radon testing is absolutely necessary if you suspect the presence of this hazardous gas, and the Environmental Protection Agency (EPA) recommends testing for all homes in the country. Radon is a pervasive natural gas that can leak through your home’s foundation and seep into the living areas. Unfortunately, the gas is highly carcinogenic and is the second leading cause of lung cancer. Radon testing is crucial for keeping you and your family safe from harm, so hire a radon mitigation specialist to test your home if you suspect its presence in your home.

In most states, radon testing companies don’t need to be licensed or certified by the state, but the companies that analyze the test results and develop radon mitigation protocols do. You should choose a radon testing company that suits your needs, but before hiring a mitigation specialist, check our state licensing tool to make sure the company is properly certified.

The homeowners guide to radon detection and reduction services
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