Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Cabin John, MD

There are 11 highly-rated local radon detection and reduction specialists.

Need a pro for your radon detection and reduction project in Cabin John, MD?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Cabin John

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 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
273 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


Avatar for Boston Environmental & Contracting, Inc

Boston Environmental & Contracting, Inc

4.43(
7
)
Approved Pro

Boston Environmental & Contracting, Inc

4.43(
7
)
Approved Pro
Customers say: True professional
212 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

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


Avatar for NextDay Inspect

NextDay Inspect

4.94(
313
)
Approved Pro

NextDay Inspect

4.94(
313
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
496 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


Your Home Matters Property Inspection Service, LLC

4.52(
136
)
Approved Pro

Your Home Matters Property Inspection Service, LLC

4.52(
136
)
Approved Pro
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
55 local quotes requested

If you are in need of a quality home inspection Your Home Matters Property Inspection, is your answer. They're quick and efficient and will be straight to the point. "What matters to you matters to us"

"Mr. Stephan Baker did an excellent roof inspection. He is very knowledgeable. He explained every steps of the inspection and answered patently all my questions. And he provided the inspection report timely. I am very satisfied with his service."

JINHUI H on December 2024

If you are in need of a quality home inspection Your Home Matters Property Inspection, is your answer. They're quick and efficient and will be straight to the point. "What matters to you matters to us"

"Mr. Stephan Baker did an excellent roof inspection. He is very knowledgeable. He explained every steps of the inspection and answered patently all my questions. And he provided the inspection report timely. I am very satisfied with his service."

JINHUI H on December 2024


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
649 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


"Professionally"

Asoka K on March 2024

Lead inspection/abatement-MD/DC/VA Hazmat inspection Home Improvement Bathroom Remodeling Asbestos inspection MD/DC/VA Mold inspection and remediation IAQ Investigation CIH consulting services

"Professionally"

Asoka K on March 2024


"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 Nooks & Crannies Property Inspection LLC.

Nooks & Crannies Property Inspection LLC.

5.00(
7
)

Nooks & Crannies Property Inspection LLC.

5.00(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Welcome to Nooks & Crannies Property Inspection, LLC! We take pride in the quality of work and customer satisfaction that we give each customer! With over 3 years experience, we are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! I look in all of your nooks and crannies!

"Inspector was punctual and very thorough. He explained everything he found and put me at ease about my purchase. He clearly knows what he was doing and I would definitely hire him again!"

Erica M on February 2021

Welcome to Nooks & Crannies Property Inspection, LLC! We take pride in the quality of work and customer satisfaction that we give each customer! With over 3 years experience, we are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! I look in all of your nooks and crannies!

"Inspector was punctual and very thorough. He explained everything he found and put me at ease about my purchase. He clearly knows what he was doing and I would definitely hire him again!"

Erica M on February 2021


Green Light Home Inspections serving the DMV area. Contact us to schedule your home inspection today and let us help educate you on your home.

...
Showing 1-10 of 108
Radon Detection and Reduction questions, answered by experts

What is radon? It’s a radioactive gas that naturally occurs in the ground, forming as uranium and thorium decay. It has no color or odor, so you don’t know if it’s seeping into your building’s foundation. Regular exposure to radon gas increases your chances of suffering from lung cancer. Radon testing measures the air inside your house for the presence of radon gas. If detected, the test will measure the severity of radon levels in your home’s air.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

A DIY kit can lessen the sting that comes with paying for a professional assessment, but these comprehensive tests are true lifesavers. Inspectors are more likely to catch all of the pollutants and hazards in your air. Plus, you’ll still need a professional to verify and act on your DIY test results. 

Some kits don’t include tests for certain air pollutants or only detect their presence, but not their levels (i.e., mold spores). If you’re willing to shell out money for a DIY kit, it’s usually better to stretch your budget slightly higher for a more detailed assessment.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

The Cabin John, MD 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.