Top-rated radon detection and reduction specialists.

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TRUSTED BY HILLANDALE, MD HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon15
    Verified radon detection and reduction services reviews

Find Radon detection and reduction specialists in Hillandale

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
2008 years of experience

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


Avatar for NextDay Inspect®

NextDay Inspect®

4.90(
537
)
Approved Pro

NextDay Inspect®

4.90(
537
)
Approved Pro
Super Service Award
Customers say: True professional
2008 years of experience
Free onsite estimate

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.

"Thank you so much for your services. He was very nice . He also was respectful. He explained the whole process. "

ikea h on December 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.

"Thank you so much for your services. He was very nice . He also was respectful. He explained the whole process. "

ikea h on December 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
2006 years of experience

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


Fidelity Home Inspections of Maryland

4.89(
54
)
Approved Pro

Fidelity Home Inspections of Maryland

4.89(
54
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
1990 years of experience

Home Inspections from Fidelity Home Inspections of Maryland LLC, is an easy way to invest in your home. With more than thirty years of inspection experience Bill Alderson pays attention to detail and is committed to giving you a thorough evaluation of your current home, or a property you are interested in purchasing. Communication is one of the things that sets us apart from other companies, and we take pride in being with you every step of the way. Our gratification comes from knowing every inspection is well done when we walk away from it. Please visit our website at fidelityhomeinspectionsofmaryland.com, or call(240-305-1984 between 8:00 am to 9:00 pm Monday through Friday.

"Very professional and gave a detailed report. I was up against a deadline and he accommodated my rush request."

Tia B on April 2022

Home Inspections from Fidelity Home Inspections of Maryland LLC, is an easy way to invest in your home. With more than thirty years of inspection experience Bill Alderson pays attention to detail and is committed to giving you a thorough evaluation of your current home, or a property you are interested in purchasing. Communication is one of the things that sets us apart from other companies, and we take pride in being with you every step of the way. Our gratification comes from knowing every inspection is well done when we walk away from it. Please visit our website at fidelityhomeinspectionsofmaryland.com, or call(240-305-1984 between 8:00 am to 9:00 pm Monday through Friday.

"Very professional and gave a detailed report. I was up against a deadline and he accommodated my rush request."

Tia B on April 2022


Avatar for Maryland Home Inspection Services

Maryland Home Inspection Services

4.70(
36
)
Approved Pro

Maryland Home Inspection Services

4.70(
36
)
Approved Pro
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
2010 years of experience

Specializing in Real Estate Home Inspections Mold and Radon testing. These services are not just for buying or selling a homebut offers a valuable peace of mind, safety and security for any Property owner or renter. Hi, I am Jim owner of Maryland Home Inspection Services. I am a Board Certified Master Inspector, (CMI) and an advance level Instructor. I am also certified as an Expert in the Maryland court system in water intrusion and mold. I am also an actual Certified Air Quality Specialist, Not just some "tester guy" and trust me there is a Big difference. We are professional testers and do not remediate. We will never attempt to sell you on any service you do not need. We have very flexible availability and pricing to fit your needs. Please call me for a free/Detailed quote. Jim Keilson Board Certified Master Inspector® (CMI) Maryland Home Inspection Services O- 301-534-0669 * C- 301-370-5050 www.MarylandHomeInspectionServices.com

"Jim answered all my questions was a pleasure to work with I will be using them in the future"

carlos r on October 2023

Specializing in Real Estate Home Inspections Mold and Radon testing. These services are not just for buying or selling a homebut offers a valuable peace of mind, safety and security for any Property owner or renter. Hi, I am Jim owner of Maryland Home Inspection Services. I am a Board Certified Master Inspector, (CMI) and an advance level Instructor. I am also certified as an Expert in the Maryland court system in water intrusion and mold. I am also an actual Certified Air Quality Specialist, Not just some "tester guy" and trust me there is a Big difference. We are professional testers and do not remediate. We will never attempt to sell you on any service you do not need. We have very flexible availability and pricing to fit your needs. Please call me for a free/Detailed quote. Jim Keilson Board Certified Master Inspector® (CMI) Maryland Home Inspection Services O- 301-534-0669 * C- 301-370-5050 www.MarylandHomeInspectionServices.com

"Jim answered all my questions was a pleasure to work with I will be using them in the future"

carlos r on October 2023


Avatar for D & H Demolition, LLC

D & H Demolition, LLC

5.00(
11
)
Approved Pro

D & H Demolition, LLC

5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2013 years of experience

Leading the industry by providing a comprehensive service to residential & commercial clients in need of selective & structural demolition , hazardous material abatement and disposal , as well as mold remediation services. Call or click for your FREE estimate today!

"Excellent job excellent people"

Denise W on June 2025

Leading the industry by providing a comprehensive service to residential & commercial clients in need of selective & structural demolition , hazardous material abatement and disposal , as well as mold remediation services. Call or click for your FREE estimate today!

"Excellent job excellent people"

Denise W on June 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
2004 years of experience

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 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
2006 years of experience
Free onsite estimate

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


Home Works Exterior Home Services

4.98(
168
)

Home Works Exterior Home Services

4.98(
168
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Home Works initially started 15 years ago, specializing in gutter cleaning, gutter repair, new gutter installation, roof repairs, and many other services related to the exterior of a home. CLICK ON "MEDIA TAB". All work is supervised, no subs. As a professional home inspector, all roof and gutters are inspected complimentary with any gutter cleaning service. Many of the repairs can be performed following the inspection as needed and requested by the homeowner. Cost is determined by the job. No travel charges for most areas. No service charges. " For your peace of mind, whether you hire him as a home inspector or a home service contractor, you can be confident that he will get it done right." Ii License#: MHIC #91488. Inspector License # 29662

"He came out and inspected the gutters and told me what the estimated cost was for the work. I was very impressed with the quality of work done."

Jennifer W on January 2018

Home Works initially started 15 years ago, specializing in gutter cleaning, gutter repair, new gutter installation, roof repairs, and many other services related to the exterior of a home. CLICK ON "MEDIA TAB". All work is supervised, no subs. As a professional home inspector, all roof and gutters are inspected complimentary with any gutter cleaning service. Many of the repairs can be performed following the inspection as needed and requested by the homeowner. Cost is determined by the job. No travel charges for most areas. No service charges. " For your peace of mind, whether you hire him as a home inspector or a home service contractor, you can be confident that he will get it done right." Ii License#: MHIC #91488. Inspector License # 29662

"He came out and inspected the gutters and told me what the estimated cost was for the work. I was very impressed with the quality of work done."

Jennifer W on January 2018


Avatar for J & G Electric Co Inc

J & G Electric Co Inc

4.92(
518
)

J & G Electric Co Inc

4.92(
518
)
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

At J&G Electric, Co., Inc. we believe that “Quality is no Accident.” Everything we do, we do deliberately, with the full power of our Licensed Electricians behind us. Quality and customer service is our top priority! Established in 1985, and serving the Maryland, Washington, D.C. and Virginia areas, J&G Electric Co., Inc. specializes in service and restoration work. We provide services for residential, commercial and 24-hour emergency services. We were the recipients of the highest rating in Washington Consumer Checkbook Magazine, who provides independent, nonprofit, no-advertising ratings to consumers! All Credit Cards accepted with 3% processing fee. Deals purchased must be scheduled and completed within 7 calendar days of purchase, must use coupon within 7 calendar days. Can not combine coupon offers. Must present coupon at time of service. All calls answered live 24 hours a day! If we are on the other line when you call, please leave a voicemail in order for us to return your call promptly.

"This is a little bit of a different review. The other day, the disposal and a few outlets suddenly stopped working. I assumed that one of the circuit breakers had been tripped, and went to check, but none had been. I flipped them all anyways to be sure and checked a few other things, but nothing worked. So I grudgingly looked for an electrician, even though I was sure it was something simple. I went to Angie’s List and solicited 4 quotes, and ultimately set up an appointment for an electrician to come. Only Brandon from J & G messaged me to ask about the problem, and after I gave more details, he provided the solution. It turns out that GFCI outlets have their own circuits built in and are reset directly on the outlet itself (just push the reset button). I would have been very annoyed if I had to take off work, wait for the electrician and pay the service fee just for him to push the reset button. So, even though J & G didn’t work in my house, they provided great service (at no charge). If I ever do need real electrical work, I’ll definitely be calling them first. Thanks!"

Peter W on March 2021

At J&G Electric, Co., Inc. we believe that “Quality is no Accident.” Everything we do, we do deliberately, with the full power of our Licensed Electricians behind us. Quality and customer service is our top priority! Established in 1985, and serving the Maryland, Washington, D.C. and Virginia areas, J&G Electric Co., Inc. specializes in service and restoration work. We provide services for residential, commercial and 24-hour emergency services. We were the recipients of the highest rating in Washington Consumer Checkbook Magazine, who provides independent, nonprofit, no-advertising ratings to consumers! All Credit Cards accepted with 3% processing fee. Deals purchased must be scheduled and completed within 7 calendar days of purchase, must use coupon within 7 calendar days. Can not combine coupon offers. Must present coupon at time of service. All calls answered live 24 hours a day! If we are on the other line when you call, please leave a voicemail in order for us to return your call promptly.

"This is a little bit of a different review. The other day, the disposal and a few outlets suddenly stopped working. I assumed that one of the circuit breakers had been tripped, and went to check, but none had been. I flipped them all anyways to be sure and checked a few other things, but nothing worked. So I grudgingly looked for an electrician, even though I was sure it was something simple. I went to Angie’s List and solicited 4 quotes, and ultimately set up an appointment for an electrician to come. Only Brandon from J & G messaged me to ask about the problem, and after I gave more details, he provided the solution. It turns out that GFCI outlets have their own circuits built in and are reset directly on the outlet itself (just push the reset button). I would have been very annoyed if I had to take off work, wait for the electrician and pay the service fee just for him to push the reset button. So, even though J & G didn’t work in my house, they provided great service (at no charge). If I ever do need real electrical work, I’ll definitely be calling them first. Thanks!"

Peter W on March 2021

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Radon Detection and Reduction questions, answered by experts

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.

DIY radon detection is possible using over-the-counter test kits, but professional testing can provide more accurate assessments, especially in cases of high initial readings.

Yes, if high levels are detected, professionals can provide solutions for radon reduction.

Since radon typically comes out of the soil, it is most commonly found in the lower levels of a home. In houses with basements, that's a common location for radon. Homes built directly on the ground may have radon on the ground floors. Radon can be found on the upper floors of the home, but often in lower concentrations than in lower levels.

Using an air purifier in your home or basement isn't an effective way to reduce or mitigate radon. Radon is an inert gas, meaning it doesn't react with other chemicals and can't be filtered the way particulates can be. While an air purifier can help improve your indoor air quality in other ways, don't rely on it to reduce radon.

The Hillandale, 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.

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