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Top-Rated Lead testing and removal specialists in Derwood - Updated Nov 2026

Avatar for Reliable Lead Inspection Services
Reliable Lead Inspection Services
4.9(
43
)
Toxic Lead - Testing

Serving Derwood, MD and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Norman was expedient, professional, and answered every single question that we had. He went through the entire process with us and was friendly, courteous, and communicative. I would not hesitate to use their services again."
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+8

Response time8 hrs
9 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Majors Air Quality Consultants
Majors Air Quality Consultants
5.0(
20
)
Toxic Lead - AbatementToxic Lead - Testing

Serving Derwood, MD and surrounding areas

In business since 2009

Credit card accepted

"Gina Raspa was wonderful to work with.  She responded within 24 hours to my email and she performed the testing within 4 days of my first contact.  Everything went smoothly thanks to her willingness to respond as soon as possible.
The news was much better than we expected and Gina gave me 3 recommendations for companies who could successfully perform the clean-up.
Thanks to Gina, we were able to move the family into the house without fear of future health issues.
I give Gina and her company the highest ratings because she earned them.


"
Recommended by100%of homeowners
Avatar for Green Environmental LLC
Green Environmental LLC
5.0(
9
)
Toxic Lead - AbatementToxic Lead - Testing

Serving Derwood, MD and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"Rodney is great. Very responsive, reasonably priced, and sends reports very quickly. He does all my lead paint inspections for all my rental properties. I've worked with several lead inspectors and won't use anyone else. Highly recommended."
Recommended by100%of homeowners
Avatar for Mid Atlantic
Mid Atlantic
4.9(
18
)
Toxic Lead - Testing

Serving Derwood, MD and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"Inspector responded promptly to my service request. Came on time and was very descriptive while addressing our concerns. He even provided some information on seperate home items that were not part of the service we requested. Also, very respectful of our property. (He actually took his shoes off because we had new carpet.) WIll use again. Thank you!"
Crawl Space
Crawl Space
Crawl Space
Crawl Space
Recommended by100%of homeowners
Avatar for Water Damage America
Water Damage America
5.0(
100
)
Toxic Lead - AbatementToxic Lead - Testing

Serving Derwood, MD and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"These guys were AWESOME. They arrived within 90 minutes, assessed, estimated, and had equipment already with them to handle our flooding. They moved the furniture, explained how it all worked, came back half way through (it was a 3 day process), moved the fans, and then put it all back when they were done at the end of the 3rd day. If every company worked like this - had staff as professional, friendly, and reassuring as these guys - there'd be no need for a better business bureau! Love them. Don't hesitate to use them!"
Recommended by98%of homeowners
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Lead Testing and Removal FAQs, answered by experts

While not all homes built before 1978 contain lead paint, enough do, so you’ll still want to test to be on the safe side. The federal government banned lead-based paint for homes in 1978, but your state may have banned lead before that time. Around 24% of homes built between 1960 and 1977 contained lead-based paint, while 87% of homes built before 1940 contained lead-based paint.

Structural problems with the foundation or roof, water damage, and significant plumbing or electrical issues are all considered major red flags in a home inspection. Of these, a structural problem related to the foundation is often the most severe. Foundation repairs are typically the most expensive and intrusive to carry out, averaging around $5,000 but sometimes reaching up to $16,000. Because these problems can pose safety risks and be costly to fix, you should ask your inspector detailed questions about any identified issues. You will need to carefully consider how major problems affect what you’re willing to pay for the home, or if you want to proceed with the sale at all.

Some of the signs that could mean your water is contaminated, such as cloudiness or bubbliness, could also be non-problems that don’t affect your water’s potability. However, if your water smells or tastes strange, it’s a good idea to stop drinking it and test it immediately. If your well water is contaminated, the best way to discover that is to test it.

A professional indoor air quality inspection takes anywhere from one to three hours, depending on the size of your home and the number of necessary samples. After the test, the specialist will discuss the findings, but you won’t get a full written report for 2 to 10 days, though you can ask your pro to expedite the process, if needed. 

You can sell a house with lead paint, but there are several requirements. If you are aware that lead paint exists anywhere in the home, you must disclose that to potential buyers. Required home inspections will often uncover lead paint, especially for older houses where lead paint may still be a problem. If you have taken steps to encapsulate lead, you should provide buyers with full documentation of the project so it won’t cause any problems later on.

The Derwood, MD homeowners’ guide to lead testing and removal services

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