Serving Vashon, 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"

*The Angi rating for Radon Detection And Reduction companies in Vashon, 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 Vashon, 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 July 09, 2025
Serving Vashon, 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 Vashon, 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 Vashon, 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 Vashon, WA and surrounding areas
In business since 1988
Free estimates
Credit card accepted
"The work was fine, I haven't retested yet."
Serving Vashon, 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 Vashon, WA and surrounding areas
In business since 1992
Free estimates
Emergency services offered
"I had an excellent experience with Diversified Crawlspace! I reached out to have Ray check the crawlspace and ensure everything was up to standard. Ray arrived right on time and displayed the utmost professionalism. He thoroughly inspected the crawlspace and offered valuable advice on what steps I could take to maintain itâ completely free of charge! Thank you so much, Ray, for your help and expertise. I highly recommend Diversified Crawlspace to anyone in need of reliable and honest service!"





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Serving Vashon, WA and surrounding areas
In business since 2014
Free estimates
Emergency services offered
Professional handyman services as well as Residential and Commercial property maintenance.\n\nWe specialize in room additions and full home remodels along with residential and commercial property electrical, plumbing, carpentry, and interior and exterior tenant improvements, re-keying, painting, landscaping, and all other property maintenance and construction services.\n\nProperty managers: we specialize in local handyman work and property maintenance needs.\n\nhttp://www.handymanintacoma.com/



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

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.

Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.

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.