*The Angi rating for Radon Detection And Reduction companies in Maple Valley, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.
*The HomeAdvisor rating for Radon Detection And Reduction companies in Maple Valley, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.
Last update on June 30, 2026
Serving Maple Valley, WA and surrounding areas
Approved
In business since 2019
Free estimates
Small jobs welcome
"I am very pleased with service from 5 Microns. They were quick to communicate, showed up on time, very professional and promptly shared the test results."
+32
Serving Maple Valley, WA and surrounding areas
Approved
In business since 2005
Emergency services offered
Credit card accepted
"Highly recommend hiring! Virgil was responsive, friendly, timely, very reasonable, and he sure knows his stuff! And how can you go wrong with a company name like Home PI! Would absolutely recommend working with Virgil to do testing."
Serving Maple Valley, WA and surrounding areas
Approved
In business since 2022
Free estimates
Offers commercial services
"BranDan did a careful job with good attention to details. I will contact them again when needed in the future."
Serving Maple Valley, WA and surrounding areas
In business since 1997
Free estimates
"They were very honest & told us we didn't have black mold and needed a dehumidifier. I would very certainly recommend them for their honesty"
Serving Maple Valley, WA and surrounding areas
In business since 2003
Free estimates
Credit card accepted
Werner Consultant America, LLC will if possible evaluate and fix any environmental/hygienic problem including for example mold and toxicity problems in your home.
Serving Maple Valley, WA and surrounding areas
In business since 2020
Free estimates
Offers commercial services
"Palm Construction recently replaced roof on my house and it was a great experience to work with Lee and his well organized team from Palm Construction. They did excellent job and my roof passed inspection with no issues. The quality of work and materials is excellent and my new roof looks fantastic. Also my whole house looks mush better now. Thanks!"
Serving Maple Valley, WA and surrounding areas
In business since 1988
Free estimates
Credit card accepted
SWAT Environmental is the nation's largest radon abatement engineer. Our experienced staff has corrected radon problems for over 60,000 customers since 1988 with 100% success!
Serving Maple Valley, WA and surrounding areas
In business since 2019
Free estimates
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
Serving Maple Valley, WA and surrounding areas
In business since 1992
Free estimates
Emergency services offered
"Did a great job. Lowered my cost when scope of work was smaller than anticipated. I did have to take the initiative to call about establishing time for work. May have been because my job was so small. I was fitted in around other work."
+2
Serving Maple Valley, WA and surrounding areas
In business since 2022
Free estimates
Credit card accepted
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
From average costs to expert advice, get all the answers you need to get your job done.
Find out the average radon testing cost in Seattle, WA. Learn what you can expect to pay for local professional testing to keep your home's air safe.
The cost of a radon mitigation system in Seattle, WA, depends mostly on the type of system being installed. Use this guide to learn about your options.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.
