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Find Radon gas testers in Larkspur

LARRY'S EXTREME CLEAN
4.9(
36
)

Serving Larkspur, CA and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"<strong><em><br /> <br /> <ul> <li><strong><em>The job went like clockwork. Larry arrived on time, ready to go. The job took less than 3 hours. Larry was meticulous and restored the carpet to a very serviceable and attractive condition. We intend to keep it instead of investing in a new carpet, as we originally thought we would have to do. Larry said that we should have him back to clean it again in another two years and we certainly will, as he does outstanding work. Larry has our full endorsement. Call him. He will do a great job for you, too. Prior to this job, we did not know Larry, and we have no axe to grind in recommending him to everyone.He is simply one of those outstanding professionals who takes pride in his work and does it well.<br /> <br /> <hr /> </em></strong></li> </ul> </em></strong>"
Recommended by97%of homeowners
Avatar for Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
4.8(
347
)

Serving Larkspur, CA and surrounding areas

In business since 1995

Free estimates

Warranties offered

"<p>it was superb! they easiest, hassle free Radon test in town, with extremely proficient people -- very knowledgeable and very people-friendly! they took their time to explain things on the phone to me before I committed. the test came back within 10 days or so -- via email. which is very convenient. it was very clear as it is, but I like talking through it and get advice. they were instantly available to discuss. they gave me future tips to keep on top of all things Radon related. </p> <p>I have to say that all this comes to be after 3 months of many back and forths with 3 other companies -- none of the other companies could be bothered to schedule a time, and those who did, never showed up.. many times over. I don't know why I was so patient with them and I wish had discovered Environmental Testing & Research Laboratories much sooner.</p> <p>Really highly recommend them!</p> <br />"
Recommended by93%of homeowners
Buyers Protection Group (BPG)
3.5(
85
)

Serving Larkspur, CA and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"Well, we are buying an older home that we know needs work.  While I'm a bit handy, I did want some additional information and background.  Plus, as the house has a cellar, radon testing was a no brainer.  I arrived early at the house at the time of inspection, and Jason Thompson had already arrived.  To make a long story short, Jason spent the next 3 hours walking around and through the house.  He had a number of findings, and it felt like a thorough walkthrough.  As for the radon, Lynda King was on site to collect the radon devices.  They both answered my myriad of questions. <br /> Do I expect that we found everything wrong with the house?  Goodness no.  I'm certain that there are numerous small issues that we missed, but I still feel that this was a thorough review and inspection. <br /> The reports were received on a Saturday evening, a quick turnaround in my opinion. <br />"
Recommended by61%of homeowners
Avatar for P W Stephens Environmental Inc
P W Stephens Environmental Inc
4.3(
23
)

Serving Larkspur, CA and surrounding areas

In business since 1982

Free estimates

Emergency services offered

"The company was great.  Always answered phone calls, were patient, explained my options, addressed my concerns, were very organized, and super responsive.  I was worried that as a small job I'd barely merit any attention, but they seemed happy to fit me in to their schedule no problem.  I'm amazed that wasn't just painless doing business with them, it was actually pleasant. <br>"
Recommended by73%of homeowners
Avatar for Wall Inspections
Wall Inspections
5.0(
5
)

Serving Larkspur, CA and surrounding areas

In business since 2012

Free estimates

Emergency services offered

"<p>We've now had two inspections performed by Kurt from Wall Inspections. We canceled the purchase of the first home after his inspection. Given our experience with the first inspection, we had no hesitation whatsoever to ask Wall Inspections for the second home.</p> <p>Kurt takes his time going through the property and noting all issues. He took close to five hours on the first property. It took longer than normal because there was just so much wrong. At no time did he try to rush things through, he made sure he did the job right. Fortunately, the second property didn't have as many issues and that inspection lasted 3 hours. </p> <p>Kurt arrived on time and delivered as agreed the report the day after the inspection. He firsts inspects the property thoroughly and then walks you through the property to show you all his findings. He communicates clearly and explains all the issues and their impact. He's available to answer any questions that may come up after the inspection. </p> <p>I have no reservation in recommending Wall Inspections.</p>"
Recommended by100%of homeowners
Avatar for 3 Step Restoration
3 Step Restoration
New to Angi

Serving Larkspur, CA and surrounding areas

Free estimates

Emergency services offered

Warranties offered

Here at 3 Step Restoration we specialize in mold removal/remediation and water damage losses. All of our certified technicians are detailed oriented and are pushed to providing you the best service. This is a new company owned by a certified professional with years of experience.

Avatar for EC-IR Mold Testing and Inspection
EC-IR Mold Testing and Inspection
New to Angi

Serving Larkspur, CA and surrounding areas

In business since 1994

Free estimates

Emergency services offered

The mold technicians employed with EC-IR Mold Testing and Inspection apply solutions exceeding industry standards for mold removal, air treatment and purification, area containment, leak repair, disposal of contaminated material, anti-fungal treatments and restoration of a property to pre-loss condition. With nearly 20 years of industry experience, including being an established mold training organization, EC-IR Mold Testing and Inspection is the leader in water and mold contamination detection and mold problem resolution.

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FAQs for radon gas testing projects in Larkspur, CA

Radon is the second leading cause of lung cancer in the U.S. The gas seeps through cracks in foundations and collects in basements and other low areas. Once you breathe it in, radioactive particles lodge in lung tissue and do long-term damage. Because you can’t see or smell radon, the EPA recommends testing your home every two years—and after major renovations—to keep your family safe.

Yes—every home should be tested. The EPA advises doing it at least every two years and any time you remodel, buy, or sell. On average, one in 15 houses nationwide sits above the recommended limit, and the only way to know where yours stands is a formal test. The equipment simply measures gas levels and won’t change your indoor environment, so the process is completely harmless.

Certified radon professionals—often home inspectors or dedicated radon mitigation contractors—handle testing. These radon testing professionals follow EPA protocols and use calibrated instruments to check levels throughout your house. Hiring a certified radon specialist means results you can trust for real estate deals, insurance requirements, and, most importantly, your family’s health.

Inspectors specialize in measuring radon gas levels, while licensed mitigation contractors design and install the systems that remove it. If your test comes back high, your inspector can point you to a qualified mitigation pro who will size and install the right fan, piping, or other equipment to bring levels down.

No—standard home air purifiers don’t touch radon. They’re built to trap dust and pollen, not radioactive gas. If testing shows high levels, you’ll need a dedicated mitigation system that vents the gas from beneath your home to the outdoors. Relying on a room purifier alone won’t keep your indoor air safe.

Opening a few windows in your home might dilute radon for a short time, but the gas seeps back in as soon as they’re closed. For a lasting fix, you’ll need a professional mitigation system—often a sub-slab depressurization fan—that pulls radon from beneath the foundation and safely vents it outside.

The Larkspur, CA homeowners’ guide to radon gas testings

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