Top-rated radon detection and reduction specialists.

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Avatar for NextDay Inspect®

NextDay Inspect®

4.90(
534
)
Approved Pro

NextDay Inspect®

4.90(
534
)
Approved Pro
Customers say: True professional
146 local quotes requested
17 years of experience

Use code HAWarranty when scheduling for complimentary home warranties! 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 DPOR and DLLR and are certified members of ASHI and InterNACHI. 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+' rating with the Better Business Bureau.

"Matt was punctual in fact he arrived earlier than us, he went through the whole property and took some time to show me specific spaces in the house that require attention and answer the questions I had, he was very polite, respectful and knowledgeable."

Oscar M on November 2025

Use code HAWarranty when scheduling for complimentary home warranties! 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 DPOR and DLLR and are certified members of ASHI and InterNACHI. 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+' rating with the Better Business Bureau.

"Matt was punctual in fact he arrived earlier than us, he went through the whole property and took some time to show me specific spaces in the house that require attention and answer the questions I had, he was very polite, respectful and knowledgeable."

Oscar M on November 2025


Avatar for Restoration 1 of Centreville

Restoration 1 of Centreville

5.00(
4
)
Approved Pro

Restoration 1 of Centreville

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
46 local quotes requested

Restoration 1 Offers Water Damage, Fire Damage, and Mold Remediation Services. Proudly Serving Centreville and Surrounding Areas. Our Certified Technicians work with ALL insurance carriers Water can wreak havoc on your property if not dealt with quickly. The same thing happens with fire and smoke and mold. If your property has been affected by a natural disaster, a hidden leak, a burst pipe, or a fire, contact Restoration 1 of Centreville. We offer comprehensive restoration services. Our team members are trained and certified by the Institute of Inspection, Cleaning, and Restoration Certification (IICRC) and the Indoor Air Quality Association (IAQA). We are also licensed and insured with years of experience and a reputation for professionalism and craftsmanship. We provide reconstruction, remodeling, sanitation, and other services designed to help you get back home as quickly as possible. We’re here to help you get your life back. Don’t hesitate to call us at (877)Water-16 877-928-3716 for the help you need during this time in Manassas, Fairfax, Chantilly, Clifton, or a surrounding area.

"Restoration 1 of Centerville is the ONLY company I would use and TRUST when it comes to water leaks and damage. Georg and his team Bassam and Preston came ASAP. Georg explained what options we have if we used insurance or paid out of pocket. They helped me understand the process of getting the basement dry without creating mold! He told us the pros and cons of whether we should keep our carpet or remove it to save money and resolve the water damage as quickly as possible. They made a VERY stressful situation, seem pain free! THANK YOU!! I am so grateful for their professional services, kindness and Communication of eta when they will be arriving to my home. My basement is now ALL dry and safe from mold!! I highly recommend Restoration 1 of Centerville!"

Teri M on May 2025

Restoration 1 Offers Water Damage, Fire Damage, and Mold Remediation Services. Proudly Serving Centreville and Surrounding Areas. Our Certified Technicians work with ALL insurance carriers Water can wreak havoc on your property if not dealt with quickly. The same thing happens with fire and smoke and mold. If your property has been affected by a natural disaster, a hidden leak, a burst pipe, or a fire, contact Restoration 1 of Centreville. We offer comprehensive restoration services. Our team members are trained and certified by the Institute of Inspection, Cleaning, and Restoration Certification (IICRC) and the Indoor Air Quality Association (IAQA). We are also licensed and insured with years of experience and a reputation for professionalism and craftsmanship. We provide reconstruction, remodeling, sanitation, and other services designed to help you get back home as quickly as possible. We’re here to help you get your life back. Don’t hesitate to call us at (877)Water-16 877-928-3716 for the help you need during this time in Manassas, Fairfax, Chantilly, Clifton, or a surrounding area.

"Restoration 1 of Centerville is the ONLY company I would use and TRUST when it comes to water leaks and damage. Georg and his team Bassam and Preston came ASAP. Georg explained what options we have if we used insurance or paid out of pocket. They helped me understand the process of getting the basement dry without creating mold! He told us the pros and cons of whether we should keep our carpet or remove it to save money and resolve the water damage as quickly as possible. They made a VERY stressful situation, seem pain free! THANK YOU!! I am so grateful for their professional services, kindness and Communication of eta when they will be arriving to my home. My basement is now ALL dry and safe from mold!! I highly recommend Restoration 1 of Centerville!"

Teri M on May 2025


Avatar for NextDay Inspect

NextDay Inspect

4.94(
314
)
Approved Pro

NextDay Inspect

4.94(
314
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
500 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.

"The inspection taught us a lot about the house and the inspector was very knowledgeable."

Sumitha V on November 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.

"The inspection taught us a lot about the house and the inspector was very knowledgeable."

Sumitha V on November 2025


Avatar for MoldGone LLC

MoldGone LLC

4.93(
812
)
Approved Pro

MoldGone LLC

4.93(
812
)
Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
648 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.

"Went okay"

Brandon B on September 2025

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.

"Went okay"

Brandon B on September 2025


Avatar for Adam Contracting

Adam Contracting

4.83(
137
)
Approved Pro

Adam Contracting

4.83(
137
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
271 local quotes requested

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


"It exceeded my expectations especially being the time they were called to come out and do the job. They were prompt, patient, and understanding which made the experience fulfilling but their work was excellent and i highly recommend them. Thank you guys ?"

Ray O on January 2024

We specialize in mold remediation and water mitigation services. We pride ourselves on the quality work we provide, while delivering great customer service! Call -- or-- click to schedule a free estimate today!

"It exceeded my expectations especially being the time they were called to come out and do the job. They were prompt, patient, and understanding which made the experience fulfilling but their work was excellent and i highly recommend them. Thank you guys ?"

Ray O on January 2024


Avatar for Operation: Dry Space

Operation: Dry Space

5.00(
1
)

Operation: Dry Space

5.00(
1
)
3 years of experience

Operation: Dry Space is a Service-Disabled Veteran Owned Business. We offer a full range of 24/7 water extraction, structural drying, dehumidification, and mold remediation. Our team of highly trained technicians use the latest technology and techniques to ensure our clients' properties are restored to their pre-loss condition.

Operation: Dry Space is a Service-Disabled Veteran Owned Business. We offer a full range of 24/7 water extraction, structural drying, dehumidification, and mold remediation. Our team of highly trained technicians use the latest technology and techniques to ensure our clients' properties are restored to their pre-loss condition.


Avatar for FSI Inspections

FSI Inspections

4.89(
9
)

FSI Inspections

4.89(
9
)
Customers say: Quick response
6 years of experience

We have been serving Northern Virginia and the surrounding area for three decades as a design - build contractor (Virginia Class A Building License). This substantial experience allows us to serve home buyers before they make one of the largest investment of their lives. My team and myself have the necessary skills, knowledge and expertise to provide detailed property inspections for your residential real estate transactions. Whether it’s the buying or selling process, a professional prepared a property report is the peace of mind worth having. Call or click to schedule a free estimate today!

"I highly recommend Marc of FSI Inspections. He is knowledgeable and through, and my clients appreciate the fact that he can look at a house with a builders eye."

Miriam M on October 2022

We have been serving Northern Virginia and the surrounding area for three decades as a design - build contractor (Virginia Class A Building License). This substantial experience allows us to serve home buyers before they make one of the largest investment of their lives. My team and myself have the necessary skills, knowledge and expertise to provide detailed property inspections for your residential real estate transactions. Whether it’s the buying or selling process, a professional prepared a property report is the peace of mind worth having. Call or click to schedule a free estimate today!

"I highly recommend Marc of FSI Inspections. He is knowledgeable and through, and my clients appreciate the fact that he can look at a house with a builders eye."

Miriam M on October 2022


Avatar for HomeTeam Inspection Service

HomeTeam Inspection Service

5.00(
9
)

HomeTeam Inspection Service

5.00(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

HomeTeam is a national home inspection franchise with over 1 million home inspections since 1993. We are the first in northern Virginia, established in 2015. The owner is a service-connected disabled veteran from the US Air Force. We use a team of inspectors and get the job done quickly and efficiently. We serve the northern Virginia area with 3 teams that work 7-days-a-week. We provide Radon testing, Pest/WDI inspections and other services like mold testing and air quality testing, as well as pool/spa inspections. HomeTeam is Virginia licensed and insured. We are also ASHI Certified Inspectors. We employ English, Spanish, and Korean speaking inspectors.

"Tom and his crew were very professional. They are very responsible and responsive. I highly recommend them"

Horacio A on October 2018

HomeTeam is a national home inspection franchise with over 1 million home inspections since 1993. We are the first in northern Virginia, established in 2015. The owner is a service-connected disabled veteran from the US Air Force. We use a team of inspectors and get the job done quickly and efficiently. We serve the northern Virginia area with 3 teams that work 7-days-a-week. We provide Radon testing, Pest/WDI inspections and other services like mold testing and air quality testing, as well as pool/spa inspections. HomeTeam is Virginia licensed and insured. We are also ASHI Certified Inspectors. We employ English, Spanish, and Korean speaking inspectors.

"Tom and his crew were very professional. They are very responsible and responsive. I highly recommend them"

Horacio A on October 2018


Avatar for Rising Eagle Restoration

Rising Eagle Restoration

5.00(
9
)

Rising Eagle Restoration

5.00(
9
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Along with offering fire, water, and mold damage restoration services, the team at Rising Eagle Restoration also provides emergency services, storm damage services, sewage system cleanup and more! Our IICRC and IAQA licensed restoration professionals can address your problems in no time.

"Very professional job doing extensive mold remediation of my whole house, from quote and explaining complex remediation process, through final clean-up. Would recommend highly!"

Kathleen H on January 2021

Along with offering fire, water, and mold damage restoration services, the team at Rising Eagle Restoration also provides emergency services, storm damage services, sewage system cleanup and more! Our IICRC and IAQA licensed restoration professionals can address your problems in no time.

"Very professional job doing extensive mold remediation of my whole house, from quote and explaining complex remediation process, through final clean-up. Would recommend highly!"

Kathleen H on January 2021

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Radon Detection and Reduction questions, answered by experts

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

Yes, DIY kits are available, but professional testing provides more accurate results and comprehensive reports.

Professional radon detection involves placing test kits in the lowest lived-in level of the house for a period, usually 48 hours to several months, followed by lab analysis of collected data.

Testing typically costs between $150 and $500, depending on the method used and the number of areas tested.

A radon test has no effect on humans—only the radon in the air does. The test does not redistribute the radon that is already present so yes, it’s safe to be around the testing kit even if it isn’t safe to be in the room itself. The test absorbs and measures the radon, but doesn't absorb enough of it to make the room any safer.

The Newington, VA homeowners’ guide to radon detection and reduction services

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

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