Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Saint James, MD

Enter your ZIP and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Saint James, MD?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Saint James

Avatar for NextDay Inspect

NextDay Inspect

4.94(
314
)
Approved Pro

NextDay Inspect

4.94(
314
)
Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
417 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.

"Michael conducted a thorough and efficient inspection of the home, providing clear photographs of areas requiring repair or maintenance."

Solomon A 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.

"Michael conducted a thorough and efficient inspection of the home, providing clear photographs of areas requiring repair or maintenance."

Solomon A on November 2025


COS Environmental

No reviews yet

COS Environmental

No reviews yet

Radon Testing-Frederick, Montgomery, Washington and Carroll Counties in Maryland * NRPP -Professionally certified * State of the art Radon monitors * Results in as little as 48 hours * Sentrilock access for real estate transactions * Serving Frederick, Montgomery, Washington and Carroll Counties in Maryland * Accepts paypal, major credit cards, cash or check

Radon Testing-Frederick, Montgomery, Washington and Carroll Counties in Maryland * NRPP -Professionally certified * State of the art Radon monitors * Results in as little as 48 hours * Sentrilock access for real estate transactions * Serving Frederick, Montgomery, Washington and Carroll Counties in Maryland * Accepts paypal, major credit cards, cash or check


Avatar for Ellingwood Pro

Ellingwood Pro

5.00(
1
)

Ellingwood Pro

5.00(
1
)
9 years of experience

Welcome to Ellingwood Pro LLC, your number one source for certified home inspections in Berkeley, Jefferson, Hampshire, Hardy, and Morgan County West Virginia, and Allegany, Washington, and Frederick County Maryland. We are dedicated to providing our customers with the best home inspection, with an emphasis on using non-invasive, visual examinations to identify defects within specific systems and components of residential properties. Free Estimates Found on https://ellingwoodpro.com/free-estimate Geremey Engle, U.S. veteran, and owner of Ellingwood Pro LLC have come a long way from its beginnings as a licensed residential remodeling company and we are happy to shift focus and have the opportunity to offer Residential Home Inspections, Residential Walk & Talk Inspections, Radon Inspection, Termite Inspection, Rental Property Safety, and Condition Inspections, Pre-Listing Inspections and Quality Control Contractor Inspections to the community. Our background in residential remodeling makes us unique compared to other home inspectors and businesses as many home inspectors have little to no experience in construction. Ellingwood Pro will discover defects, explain causes, and recommend the appropriate subject matter expert to remedy the issue and have you feeling confident to negotiate the purchase of your new home. We hope you enjoy our services as much as we enjoy offering them to you. If you have any questions, comments, or recommendations, please don't hesitate to contact us.

Welcome to Ellingwood Pro LLC, your number one source for certified home inspections in Berkeley, Jefferson, Hampshire, Hardy, and Morgan County West Virginia, and Allegany, Washington, and Frederick County Maryland. We are dedicated to providing our customers with the best home inspection, with an emphasis on using non-invasive, visual examinations to identify defects within specific systems and components of residential properties. Free Estimates Found on https://ellingwoodpro.com/free-estimate Geremey Engle, U.S. veteran, and owner of Ellingwood Pro LLC have come a long way from its beginnings as a licensed residential remodeling company and we are happy to shift focus and have the opportunity to offer Residential Home Inspections, Residential Walk & Talk Inspections, Radon Inspection, Termite Inspection, Rental Property Safety, and Condition Inspections, Pre-Listing Inspections and Quality Control Contractor Inspections to the community. Our background in residential remodeling makes us unique compared to other home inspectors and businesses as many home inspectors have little to no experience in construction. Ellingwood Pro will discover defects, explain causes, and recommend the appropriate subject matter expert to remedy the issue and have you feeling confident to negotiate the purchase of your new home. We hope you enjoy our services as much as we enjoy offering them to you. If you have any questions, comments, or recommendations, please don't hesitate to contact us.


Avatar for Buyers Eyes Home Inspections LLC

Buyers Eyes Home Inspections LLC

5.00(
14
)

Buyers Eyes Home Inspections LLC

5.00(
14
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Buyers Eyes Home Inspections LLC is a locally owned and operated company that values honesty and integrity and will inspect your home as if we were buying it for ourselves. You will find us competitively priced. Licensed Home Inspector in Md. and Pa. Also Offering Radon Testing. Very detailed inspections with digital photos. Same day electronic reporting. I have been doing residential inspections for 35 years with a large insurance company so I am very experienced Now in business for myself. I am an electrician as well. **Also offering Radon Testing and Wood Destroying Insect Inspections. 301-676-7097

"Brett arrived on time and completed a detailed inspection of the interior and exterior. He also taught me about important aspects of home maintenance as he completed the assessment. The completed report was detailed and emailed to me very quickly."

Chris B on September 2021

Buyers Eyes Home Inspections LLC is a locally owned and operated company that values honesty and integrity and will inspect your home as if we were buying it for ourselves. You will find us competitively priced. Licensed Home Inspector in Md. and Pa. Also Offering Radon Testing. Very detailed inspections with digital photos. Same day electronic reporting. I have been doing residential inspections for 35 years with a large insurance company so I am very experienced Now in business for myself. I am an electrician as well. **Also offering Radon Testing and Wood Destroying Insect Inspections. 301-676-7097

"Brett arrived on time and completed a detailed inspection of the interior and exterior. He also taught me about important aspects of home maintenance as he completed the assessment. The completed report was detailed and emailed to me very quickly."

Chris B on September 2021


"AdvantaClean installed a radon mitigation system at my house. Within two years, the piping they put in on the outside of the house to vent the gas collapsed. Upon further inspection, the ~30ft., ~50lb. pipe had been affixed upright by two plastic ties screwed to the siding, and the weight of the pipe had caused the screws to tear through the thin plastic on both ties. Similar systems I've looked at in the neighborhood use lighter, metal, gutter-like pipes, and metal ties (stronger ties for lighter pipes!). When contacted, Dave (the owner) tried to get me to pay $300 to fix it, claiming that he otherwise "couldn't help me" because I couldn't reasonably expect their work to last for almost two years. He also said any kind of warranty was void because "wind damage" wasn't covered. The winds in Frederick topped out at 8mph the day it fell, but I guess he's right. It honestly WOULD be unreasonable to expect this quality of work to hold up to normal weather events (normal storms and winds in a fairly mild weather part of the country) and wear for two whole years! I'm frankly surprised it didn't fall earlier. Oh, and it took me calling AdvantaClean three times to get ahold of him (thought I was promised a call back each time!), but that's way less egregious than the whole "doing sub-par work and trying to get me to pay for it when it failed" thing."

Sam G on August 2022

Specializing in emergency water damage mitigation, mold remediation, moisture control, Radon mitigation systems and air duct cleaning for residential, commercial and industrial customers.

"AdvantaClean installed a radon mitigation system at my house. Within two years, the piping they put in on the outside of the house to vent the gas collapsed. Upon further inspection, the ~30ft., ~50lb. pipe had been affixed upright by two plastic ties screwed to the siding, and the weight of the pipe had caused the screws to tear through the thin plastic on both ties. Similar systems I've looked at in the neighborhood use lighter, metal, gutter-like pipes, and metal ties (stronger ties for lighter pipes!). When contacted, Dave (the owner) tried to get me to pay $300 to fix it, claiming that he otherwise "couldn't help me" because I couldn't reasonably expect their work to last for almost two years. He also said any kind of warranty was void because "wind damage" wasn't covered. The winds in Frederick topped out at 8mph the day it fell, but I guess he's right. It honestly WOULD be unreasonable to expect this quality of work to hold up to normal weather events (normal storms and winds in a fairly mild weather part of the country) and wear for two whole years! I'm frankly surprised it didn't fall earlier. Oh, and it took me calling AdvantaClean three times to get ahold of him (thought I was promised a call back each time!), but that's way less egregious than the whole "doing sub-par work and trying to get me to pay for it when it failed" thing."

Sam G on August 2022



Avatar for RC Air & Mold Solutions

RC Air & Mold Solutions

5.00(
11
)

RC Air & Mold Solutions

5.00(
11
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

If you are concerned about the possibility you have mold in your home or see evidence of mold growth, contact us immediately! We have experienced Certified Mold Inspectors (CMI #81281) who will come in and do a complete inspection of your home or business. We are positioned to provide an assessment of the indoor air quality or environmental quality concern of private homes, commercial buildings and institutional complexes. If necessary, we will take air samples in the area of concern to determine the levels of contamination. If visible mold is present, we can do surface testing to determine the species of mold. Testing samples are sent to a non-affiliated leading environmental testing firm and test results are back after 48 hours.* After a review of laboratory results from samples taken while onsite and from our visual inspection, we can recommend and refer you to proper mold remediation companies that can correct the issue if deemed necessary. Your safety is our main concern and to the best of our ability, we will be there to help you have “The Safest Air You Can Breathe!” Your peace of mind is our best reward.

"Absolutely phenomenal Robert and Cindy are amazing to work with and make sure that the client is also educated which is extremely important in today’s modern age!"

Donald R on September 2023

If you are concerned about the possibility you have mold in your home or see evidence of mold growth, contact us immediately! We have experienced Certified Mold Inspectors (CMI #81281) who will come in and do a complete inspection of your home or business. We are positioned to provide an assessment of the indoor air quality or environmental quality concern of private homes, commercial buildings and institutional complexes. If necessary, we will take air samples in the area of concern to determine the levels of contamination. If visible mold is present, we can do surface testing to determine the species of mold. Testing samples are sent to a non-affiliated leading environmental testing firm and test results are back after 48 hours.* After a review of laboratory results from samples taken while onsite and from our visual inspection, we can recommend and refer you to proper mold remediation companies that can correct the issue if deemed necessary. Your safety is our main concern and to the best of our ability, we will be there to help you have “The Safest Air You Can Breathe!” Your peace of mind is our best reward.

"Absolutely phenomenal Robert and Cindy are amazing to work with and make sure that the client is also educated which is extremely important in today’s modern age!"

Donald R on September 2023



Baxter Group, Inc.

5.00(
1
)

Baxter Group, Inc.

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Baxter Group, Inc. is a locally owned, small business that offers Indoor Environmental Quality services to protect your family, co-workers and friends from indoor environmental contaminants.

Baxter Group, Inc. is a locally owned, small business that offers Indoor Environmental Quality services to protect your family, co-workers and friends from indoor environmental contaminants.


A.D.P. Inspections Inc.

4.43(
7
)

A.D.P. Inspections Inc.

4.43(
7
)
Customers say: Quick response
Free onsite estimate

We are a full service Home Inspection and Environmental Testing Services provider. Our Mission is to provide comprehensive inspection services, while educating our customers. Training and continuing education are essential to providing thorough and accurate services for our customers, and ensure that we have knowledge on the latest developments in our industry. We obtain this by exceeding the state and professional organizational training and certification requirements. We accept all major credit cards, checks and cash as payment forms.

We are a full service Home Inspection and Environmental Testing Services provider. Our Mission is to provide comprehensive inspection services, while educating our customers. Training and continuing education are essential to providing thorough and accurate services for our customers, and ensure that we have knowledge on the latest developments in our industry. We obtain this by exceeding the state and professional organizational training and certification requirements. We accept all major credit cards, checks and cash as payment forms.

Showing 1-10 of 15
Radon Detection and Reduction questions, answered by experts

Costs for radon detection services typically range from $150 to $250, depending on the testing method and whether a professional assessment is required.

Avoid opening windows and keep doors closed during testing to obtain accurate readings.

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. 

Costs depend on test type, home size, number of testing locations, and whether follow-up testing is required.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

The Saint James, 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.

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"