Radon Testing Specialists

What We Do

Areas of Service

We are certified for radon measurement through the National Environmental Health Association #100519RT and with the State of California.  We received our initial training at the Midwest Universities Radon Consortium at the University of Minnesota and at the Western Regional training Center at the University of Colorado.

Publications & Links

Los Angeles County

Orange County

Riverside County

San Bernadino County

San Luis Obispo County

Santa Barbara County

Ventura County

We have been performing radon inspections in the Southern California area since 1991.  We offer residential measurement services, with special expertise in the real estate transaction market.  We also are experienced in commercial and multi-family inspections.

Home Buyers and Sellers Guide to Radon: http://www.epa.gov/radon/pubs/hmbyguid.html

Consumers Guide to Radon Reduction: http://www.epa.gov/radon/pubs/consguid.html

California Radon Program: https://www.cdph.ca.gov/Programs/CEH/DRSEM/Pages/EMB/Radon/Radon.aspx

For the real estate buyer we provide these additional services to help ensure reliable test results:

Use of a Continuous radon monitor which collects and analyzes data in real time, allowing for quicker test results.  In fact, the buyer is handed a full written report on site at the conclusion of the 48 hour test period.

Compliance verification procedures, including:

  • tamper seals on all   windows and non-essential doors.
  •  motion detector
  •  "close door" reminder notes  on unsealed doors.
  •  analysis of hourly data for consistency and quality
  •  careful explanation of test conditions prior to initiation of the test and occupants signature on compliance agreement.


Quality Assurance


"My experience with ReveAnn and Radon Testing has gone on for many years.  I had Radon Testing done when my own son purchased a house as well as his friends.  They are very professional and experienced.   My son's home was diagnosed with radon.  We wre referred to several companies that could mitigate the problem.  I always work and refer clients and associates to ReveAnn.

Patricia L. Brown

Realtor, #DRE 00637530

White House Properties, Inc.

Fees are dependent on the size of the structure and number of samples.  Please call or email us for a quote.

​(805) 732-1272


We have used Radon Testing Services twice, and are so glad that we did.  The test of our first house showed that we had acceptable levels of radon.  The peace of mind that came from that was well worth the cost of the service.  More recently, when we had another house tested, the test showed that the levels of radon in the house were unsafe.  The results of the report allowed us to negotiate a large credit from the seller, which covered the cost of radon  remediation services.  The investment in testing may have saved our (and our son's) health, and finding out about the radon during the inspection period certainly saved us a lot of money.


Both times, our agent tried to convince us not to test the house for radon, because they claimed we were not iin a high risk zone.  I am so glad that we had the testing done even when some people were telling us there was no need.


Further, I'm glad that we used Radon Testing Services specifically.  During both tests, ReveAnn was punctual, professional, and a pleasure to deal with.  I highly recommend Radon Testing Services to anyone buying a home, or anyone in a home who has never had it tested.


Ezra Goldschlager