*The Angi rating for Radon Detection And Reduction companies in Ariel, 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 Ariel, 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 March 03, 2026
Serving Ariel, WA and surrounding areas
Approved
In business since 2002
Free estimates
Warranties offered
"From initial inspection to mitigation was about a week. Technician were punctual and finished within time estimated."
Serving Ariel, WA and surrounding areas
In business since 2015
Credit card accepted
"Derek was thorough and knowledgeable."
Serving Ariel, WA and surrounding areas
In business since 1986
Free estimates
Emergency services offered
"Everything has gone well. I have always received a quick response from him within the same day. He knows his stuff and educated me on a few things as well. He is definitely a great guy to work with."
+4
Serving Ariel, 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 Ariel, WA and surrounding areas
Serving Ariel, WA and surrounding areas
In business since 2019
"Greg is always prompt in responding to scheduling and has a quick turnaround on reports too. I like his reports because they have plenty of pictures and he takes the time with buyers to answer any questions whether it be on site or following up on the report."
Serving Ariel, WA and surrounding areas
In business since 2015
Free estimates
Credit card accepted
At Rose City Radon, our company is based on the belief that our customers needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. Call us today for all of your testing needs!
Serving Ariel, WA and surrounding areas
In business since 1994
Free estimates
Credit card accepted
We have reviewed and approved over 1 billion dollars in construction evaluations over the past two decades performing Structural and Fire & Life Safety plan review and building inspections for local building departments. We are all fully certified, licensed and insured professional plans examiners and building inspectors. We take pride in our work and the finished product on every construction project we take on. And when we provide our home Inspection services, we always work 100% for our clients and no one else, with IBCC you get a completely unbiased report. We will provide you with an electronic report complete with color photos and a summary of all findings as well as the detailed findings of every major component of your new prospective home right on-site after the inspection is performed, no more waiting for your report. Also, when performing a seismic inspection and / or installation we utilize decades of experience reviewing lateral designs prepared by licensed professionals.
If radon is present in your home, you can expect to pay around $1,000 for a radon mitigation system or between $780 and $1,250 in most cases. The exact price will depend on the severity of the radon leak, home size, and the protocol the radon specialist develops to remove radon from your home and keep it out. Your foundation type will also affect your radon mitigation system cost, as unfinished basements will cost about $4,600 to seal and ventilate, while crawl spaces without a foundation slab may need extra encapsulation, costing $1,500 to $15,000.
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.
Radon testing costs depend on whether you hire a professional radon inspector or DIY test. You can expect to pay $150 to $800 to hire a local radon inspector, and home-testing kits range in price from $15 to $250 from home improvement stores. However, it’s best to trust a professional inspector with this task to ensure accurate results. Plus, if you have radon in your home, your testing company can develop a mitigation protocol to keep you and your family safe from the dangerous gas, so it’s well worth the money to hire a professional.
Yes, radon testing is absolutely necessary if you suspect the presence of this hazardous gas, and the Environmental Protection Agency (EPA) recommends testing for all homes in the country. Radon is a pervasive natural gas that can leak through your home’s foundation and seep into the living areas. Unfortunately, the gas is highly carcinogenic and is the second leading cause of lung cancer. Radon testing is crucial for keeping you and your family safe from harm, so hire a radon mitigation specialist to test your home if you suspect its presence in your home.
In most states, radon testing companies don’t need to be licensed or certified by the state, but the companies that analyze the test results and develop radon mitigation protocols do. You should choose a radon testing company that suits your needs, but before hiring a mitigation specialist, check our state licensing tool to make sure the company is properly certified.
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 Portland, OR, depends mostly on the type of system being installed. Use this guide to learn about your options.
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
You need to protect your home from radon, but what does a radon mitigation system look like? Check out this radon mitigation system diagram to learn how it works.
If you’re looking to buy a house, a home inspection can uncover hidden hazards that could pose a health risk to your household. Here’s what to know.
Radon is a radioactive gas that can enter a home from the ground. Prepare yourself for mitigation by answering these questions before hiring a pro.
