Certified Radon Services Providers
The Radon Program certifies all radon service prāāoviders operating in California. California law requires all radon professionals to be approved by either the
National Radon Proficiency Program (NRPP) or National Radon Safety Board (NRSB). There are no professional groups that are currently exempt from this requirement, including Home Inspectors, Industrial Hygienists, Registered Environmental Assessors (REAs), and Licensed Geologists.
The California Department of Public Health does not endorse or recommend any company or individual over another. As with any home service, you are advised to get more than one estimate. The lists below are not updated daily; to verify whether a service provider not listed here is certified, you can contact us via email for the mosāāt up-to-date information.
Testers
Professional testers can provide test results faster than using a do-it-yourself test kit. Use a professional tester during a real estate transaction. Theāāy are also recommended for testing multi-family housing units, schools, non-residential buildināāgs, and anytime you want quick results. The testers listed here have met their board requirements and are certified to operate in California.
ā114665-RMT
| āAhmad Mansourā
| ā10/31/2026
| āCalifornia
| ā510-304-2249
|
ā115061-RMP
| āAidan Ross
| ā4/30/2027
| āCalifornia
| ā858-868-1929
|
ā105206-RMP
| āAlain Grissette
| ā2/28/2027
| āCalifornia
| ā925-808-6700
|
108692-RMP
|
Alan Benavente |
12/31/2006
|
California
|
818-822-6152 |
113855-RMP
|
Alexandria Miranda |
7/31/2025 |
California
|
916-918-5397 |
ā113912-RMP
| āAlfredo Calderon
| ā07/31/2025
| āCalifornia
| ā714-473-6859
|
114050-RMP |
Amanda Plagge |
1/31/2026 |
Idaho |
208-860-4150 |
109996-RMP |
Amy Peacock |
11/30/2025 |
Colorado |
913-484-1532 |
ā25MS018-RMS
| āAnahita Swingle
| ā3/31/2027
| āCalifornia
| ā714-721-4111
|
ā24MT032
| āAndrew Carter
| ā11/30/2026
| āCalifornia
| ā510-407-5421
|
111309-RMP
|
Angela Deason |
6/30/2026 |
California |
530-570-4382 |
ā114313-RMP
| āAnnie Garcia
| ā4/30/2026
| āKentucky
| ā502-410-5000
|
24MS603
| āAnthony Hamer
| ā7/30/2026
| āMinnesota
| ā651-968-6394
|
ā114595-RMP
| āAnthony Trimble
| ā8/31/2026
| āCalifornia
| ā925-316-5674
|
16ST015 |
Aref Chmaytelli |
11/30/2026 |
California |
310-576-7771 |
ā115025-RMP
| āBenjamin Schulte-Bisping
| ā4/30/2027
| āCalifornia
| ā510-773-0708
|
ā114900-RMP
| āBaldwin Michael
| ā1/31/2027
| āCalifornia
| ā279-336-0649
|
102253-RMP
|
Bonnie Kellogg |
10/31/2025 |
California |
510-786-9751 |
ā113682-RMP
| āBlake Seagraves
| ā5/31/2025
| āIllinois
| ā847-690-0950
|
111057-RMP |
Bradley Cord |
1/31/2026 |
Indiana |
317-642-6094 |
108285-RMP |
Brandon Ford |
3/31/2026 |
California |
530-544-1862 |
112704-RMP |
Brandon Koka |
3/31/2026 |
California |
925 389-3787 |
113475-RMP |
Brandy Groves |
1/31/2027
|
California |
951-817-4670 |
113717-RMP |
Breanna Phan |
4/30/2027
|
California |
209-314-7353 |
111851-RMP |
Brett Brumbaugh |
2/28/2025 |
Ohio |
419-392-2011 |
23MT038 |
Brian Kim |
10/30/2025 |
California |
415-310-5067 |
113748-RMP |
Brooklynn Marcus |
4/30/2027
|
California |
310-294-0900 |
112263-RMP |
Cameron Dopke
|
9/30/2025 |
California |
530-544-1862 |
ā114586-RMP
| āCarina Rodriguez
| ā8/31/2026
| āCalifornia
| ā310-387-4901
|
9SS0048-RMS
|
Carol Noland |
6/30/2025 |
California |
805-214-6378 |
āRMP-114802
| āCarolina Cortes
| ā12/31/2026
| āArizona
| ā480-886-4783
|
ā24MT024-RMT
| āCaroline Hanna
| ā9/30/2026
| āCalifornia
| ā310-922-7239ā
|
24MS044-RMS |
Chloe Hudson |
5/30/2026 |
Oregon |
971-275-3719 |
107105-RMP |
Christian Matecki |
5/31/2025 |
California |
602-663-2270 |
100318-RMP |
Christine Jordan |
5/31/2026 |
California |
562-495-5777 |
108809-RMP |
Christopher Ferguson |
4/30/2026 |
Kentucky |
317-3970-326 |
14306-RMP
|
Christopher Olsen |
4/30/2026 |
California |
831-262-8859 |
ā106556-RMP
| āChuck Easley
| ā5/31/2026
| āMinnesota
| ā612-220-1455
|
ā111434-RMP
| āClaire Neal
| ā8/31/2026
| āWashington
| āā559-706-3530
|
107918-RMP
|
Cory Martini
|
2/28/2027
|
California |
916-838-7365 |
114061-RMP |
Dallas Jones |
1/31/2026 |
Georgia |
678-983-9312 |
110176-RMP |
Dana Carlton |
11/30/2026
|
Nevada |
775-842-5352 |
108446-RMP |
Daniel Prater |
3/31/2026 |
California |
408-655-2696 |
112948-RMP |
Danny Huerta |
6/30/2026 |
California |
213-507-0917 |
101158-RMP |
Darioush Ghahremani |
4/30/2026 |
California |
440-533-5000 |
111074-RMP |
David Gengenbacher |
1/31/2026 |
California |
562-235-6654 |
114095-RMP |
David Grunat |
2/28/2026 |
California |
510-756-0741 |
106131-RMP |
David Lucero |
8/31/2026
|
California |
818-731-9644 |
ā114735-RMP
| āDavid Rhea
| ā11/30/2026
| āCalifornia
| ā858-220-9995
|
106759-RMP |
David Tillema |
3/31/2027
|
California |
949-289-3568 |
108735-RMP |
Deanna Lee
|
7/31/2026 |
California |
213-276-9642 |
ā25MS002
| āDemchigsuren Dorj
| ā1/30/2027
| āMinnesota
| ā952-686-3391
|
102942-RT
|
Dennis Ironi |
3/31/2026 |
California |
310-430-4440 |
ā112914-RMP
| āDerek Prunty
| ā6/30/2026
| āTexas
| ā304-657-5261
|
104582-RMP
|
Derrick Quach |
1/31/2026 |
California |
510-786-9751 |
ā112062-RMP
| Donald Devineā | ā4/30/2027
| āColorado
| ā914-263-1415
|
113095-RMS
|
Dwayne Campeau |
8/31/2026
|
California |
714-920-8084 |
106364-RMP |
Edward Riley |
8/31/2026
|
California |
530-583-6653 |
114248-RMP |
Eliza Sahakian |
4/30/2026 |
California |
626-354-9554 |
ā111480-RMP
| āElizabeth Scudero
| ā9/25/2025
| āCalifornia
| āā925-296-7730
|
113902-RMP
|
Ellen Bennett
|
7/31/2025 |
Florida |
941-232-9627 |
ā114887-RMP
| āErick Cortez
| ā2/28/2027
| āCalifornia
| ā657-545-5319
|
ā110925-RMP
| āEsther Hardesty
| ā3/31/2026
| āColorado
| ā720-935-0652
|
ā115030-RMP
| āFernando Garcia-Osorio
| ā3/31/2027
| āCalifornia
| ā808-404-0769
|
ā11130-RMP
| āFrank Valerga
| ā8/31/2026
| āCalifornia
| ā408-512-2912
|
ā114931-RMFT
| āFranklin Cresta
| ā2/28/2027
| āIowa
| ā515-954-5454
|
113534-RMP
|
Fred Ellrott Junior |
6/30/2025 |
California
|
805-732-2476 |
114327-RMP |
Gabriela Cyrulik |
5/31/2026 |
California
|
201-888-5423 |
114370-RMP
|
Glenn Tofani |
6/30/2026 |
California
|
949-502-5353 |
ā112889-RMP
| āGlenn Zara
| ā7/31/2026
| āCalifornia
| ā951-741-4225
|
100188-RMP |
Gustavo Delgado
|
9/30/2025 |
Hawaii |
510-512-0046 |
ā24MT024-RMT
| āHanna Caroline
| ā9/30/2026
| āCalifornia
| ā310-922-7239
|
ā107994-RMP
| āHeri Rodriguez
| ā4/30/2026
| āCalifornia
| āā323-551-8449
|
ā24MS013-RMS
| āHope Cline
| ā3/30/2026
| āMaryland
| ā443-805-1021
|
āRMP-107424
| āJack Cooper
| ā9/30//2026
| āCalifornia
| ā515-210-4407
|
ā113850-RMP
| Jacob Bussā | ā6/30/2025
| āLouisiana
| ā225-333-7653
|
111714-RMP
|
Jacob Epperson
|
12/31/2026
|
Missouri
|
251-360-9514 |
ā113421-RMP
| āJake Williams
| ā11/30/2026
| āCalifornia
| ā619-705-7413
|
āRMT-16ST015
| āJames Fraley
| ā12/30/2026
| āCalifornia
| ā310-576-7771
|
ā24MS06-RMS
| āJames Loring
| ā8/30/2025
| āCalifornia
| ā510-556-9811
|
114310-RMP |
James Mayfield
|
4/30/2026 |
California |
310-880-9647 |
ā114599-RMP
| āJames Ryan
| ā8/31/2026
| āCalifornia
| ā970-310-3422
|
23MS076-RMS |
Jane Xiao |
10/30/2025 |
California |
415-952-9421 |
113870-RMP |
Jason Alaraz |
7/31/2025 |
California |
714-713-0805 |
107969-RMP |
Jason Gregory |
5/31/2026 |
California |
805-244-6687 |
āRMP-114784
| āJay Cudmore
| ā12/31/2026
| āCalifornia
| ā858-752-0287
|
102014-RMP
|
Jeffrey Noel |
5/31/2025 |
California |
559-348-2200 |
17SS085-RMS |
Jennifer Alvarado |
10/30/2025 |
California |
805-798-3841 |
108660-RMP |
Jennifer Sims |
6/30/2026 |
Kentucky |
502-410-5000 |
107060-RMP |
Jeremy Gress |
4/30/2027
|
California |
949-677-7122 |
112497-RMP |
Jeremy Wesctott |
11/30/2025 |
Michigan |
734-649-9680 |
110989-RMT |
Jessica Belland
|
2/28/2026 |
California |
310-218-1855 |
110831-RMP |
Joe Williams |
9/30/2025 |
California |
714-221-6360 |
108870-RMP |
John Henderson
|
12/31/2026
|
California |
805-280-6616 |
111790-RMP |
Jonathan
Feeney-Mosier |
1/31/2027
|
California |
619-458-0309 |
13SS057-RMS |
Jonathan Massey |
8/30/2025 |
California |
310-978-8281 |
23MS096-RMS |
Jooho Lee
|
12/30/2025 |
California |
818-818-8972 |
ā114953-RMP
| āJorge Ramos
| ā2/28/2027
| āCalifornia
| ā714-499-7659
|
ā114034-RMP
| āJose Villanueva
| ā2/28/2026
| āCalifornia
| ā619-592-3967
|
ā111602-RMP
| āJoshua Cornejo
| ā11/30/2026
| āCalifornia
| ā714-396-0715
|
106128-RMP |
Judith Woods |
12/31/2025 |
California |
805-563-0100 |
114237-RMP |
Juhun Kim |
3/31/2026 |
California |
909-837-0035 |
9SS0029-RMS |
Karen Shockley |
9/30/2025 |
California |
619-276-5901 |
ā23MS059-RMS
| āKaren Weber
| ā9/30/2025
| āIllinois
| ā630-325-4443
|
103081-RMP
|
Kathleen Williamson
|
5/31/2026 |
Connecticut
|
860-298-6392 |
113718-RMP |
Katrina Scherr
|
5/31/2027
|
California |
916-458-1098 |
111326-RMP |
Kayla Parzynski
|
6/30/2026 |
California |
805-732-1272 |
ā108008-RMP
| āKenneth Deemer
| ā5/31/2025
| āKentucky
| ā502-286-1250
|
ā110412-RMP
| āKevin Minto
| ā11/30/2025
| āCalifornia
| ā530-273-1300
|
ā25MS008
| āKimberly Gilley
| ā1/31/2027
| āOhio
| ā614-516-3398
|
ā115105-RMP
| āKrista Butler
| ā4/30/2027
| āNevada
| ā775-823-6927
|
ā108034-RMP
| Kristen Schmidt
| ā10/31/2025
| āIllinois
| ā630-479-2507
|
107585-RMPā
| āKurt Brickner
| ā5/31/2026
| āSouth Carolina
| ā419-957-2422
|
24MS028-RMS |
Kyle Hamil |
3/30/2026 |
Texas |
972-951-4490 |
ā111493-RMP
| āLaura Mathys
| ā8/31/2026
| āCalifornia
| ā919-412-3083
|
23MS060-RMS |
Linda Rogers
|
9/30/2025 |
Minnesota |
612-443-5205 |
ā113942-RMP
| āLisa Henderson
| ā12/31/2025
| āCalifornia
| ā714-349-5760
|
ā115032-RMP
| āLourdes Buenrostro
| ā3/31/2027
| āCalifornia
| ā760-755-8135
|
114428-RMP
|
Luke Feher |
7/31/2026 |
California |
310-504-4642 |
113778-RMP |
Lynn Laborde |
5/31/2025 |
California |
909-645-3826 |
113880-RMP |
Mahima Hettiarachchi |
6/30/2025 |
New York |
212-629-0690 |
114219-RMS |
Malcolm Sabal |
3/31/2026 |
California |
310-415-8749 |
11SS027-RMS
|
Mark Drollinger |
10/30/2025 |
California |
818-246-2707 |
ā114810-RMP
| āMartha Lahti
| ā12/31/2026
| āColorado
| ā774-473-0921
|
āRMP-114802
| āMartha Ortiz
| ā12/31/2026
| āArizona
| ā480-886-4783
|
ā112919-RMP
| āMartin Gibson
| ā6/30/2026
| āTexas
| ā512-955-1161
|
ā114999-RMP
| āMatthew Burich
| ā3/31/2027
| āCalifornia
| ā310-415-7041
|
24MS046-RMS
|
Matthew Cuda
|
5/30/2026 |
Oregon |
503-880-0126 |
14SS035-RMS
|
Mazyar Hajiaghai |
8/30/2026
|
California |
408-540-4241 |
ā24MT026-RMT
| āMicaela Rodriguez
| ā10/30/2026
| āCalifornia
| ā510-694-6002
|
105517-RMP |
Michael Atallah |
10/31/2025 |
California |
949-756-8282 |
7SS0011-RMS |
Michael Cantor |
4/30/2027
|
California |
949-275-4950 |
ā108657-RMP
| āMichael Lee
| ā7/31/2026
| āCalifornia
| ā916-225-5615
|
23MS071-RMS
|
Michael Liston |
10/30/2025 |
California |
925-808-8197 |
106593-RMP |
Michael Pinkerton
|
1/31/2027
|
California |
310-854-6300 |
ā112976-RMP
| āMichelle Brenner
| ā8/31/2026
| āKentucky
| ā502-410-5000
|
114300-RMP |
Michelle Everitt |
5/31/2026 |
California |
301-706-6549 |
ā112005-RMP
| āMiguel Garcia
| ā3/31/2027
| āCalifornia
| ā714-240-8651
|
9SS0030-RMS
|
Milton Shockley |
9/30/2025 |
California |
619-276-5901 |
110412-RMP |
Minto Kevin |
11/30/2025 |
California |
530-273-1300 |
12SS002-RMS |
Murray Harreschou
|
2/28/2026
|
California |
310-396-6532 |
ā114822-RMP
| āNatalie Pangilinan
| ā12/31/2026
| āCalifornia
| ā279-900-5851
|
ā108180-RMP
| āNate Seward
| ā7/31/2025
| āCalifornia
| ā805-432-4888
|
ā113883-RMT
| āNathaniel Grondin
| ā8/31/2025
| āCalifornia
| ā774-275-4600
|
ā24M6064
| āNathaniel Hed
| ā7/30/2026
| āMinnesota
| ā612-293-4032
|
ā114385-RMP
| āNayeli Bonilla
| ā6/30/2026
| āCalifornia
| ā619-638-4377
|
ā115069-RMP
| āNoah Covarrubias
| ā4/30/2027
| āCalifornia
| ā949-910-1440
|
110094-RMP
|
Oleksandr Zhdanyuk
|
10/31/2026
|
California |
916-206-0829 |
100753-RMP |
Phil Thornberry |
8/31/2025 |
Indiana |
317-853-2172 |
āRMP-114812
| āPhoenix Dorr
| ā12/31/2026
| āCalifornia
| ā619-916-9744
|
113725-RMP
|
Ramiro Vejar |
4/30/2027
|
California |
909-333-8592 |
23MS026-RMS |
Randall Wheeler |
5/30/2025 |
Wyoming |
307-365-8429 |
ZEtwmwJSV8-RMP |
Randolph Brooke
|
3/19/2026 |
California |
209-405-3501 |
ā113945-RMP
| āReed Robins
| ā4/30/2026
| āTexas
| ā719-233-3466
|
105251-RMP |
Remington Caldwell |
5/31/2027
|
California |
510-557-0592 |
100519-RMP |
ReveAnn Ellrot |
11/30/2025 |
California |
805-732-1272 |
101101-RMP |
Rich Davis |
5/31/2025 |
Wahington |
253-569-8572 |
ā111239-RMP
| Riley Duceyā | ā10/31/2026
| āCalifornia
| ā909-747-7110
|
23MS093-RMP |
Rob Rosengarten
|
2/28/2027
|
Illinois |
630-246-0745 |
114123-RMP |
Robert Bennett |
1/31/2026 |
California |
760-696-2389 |
112099-RMP |
Robert Hodges |
4/30/2027
|
Colorado |
309-231-8223 |
ā114622-RMP
| āRobert Ibarra
| ā9/30/2026
| āCalifornia
| ā619-840-3757
|
108873-RMP |
Roland Walker
|
8/31/2025 |
California |
650-873-4224 |
āRMP-112634
| āRonald Melchior
| ā2/28/2026
| āCalifornia
| ā443-790-4613
|
ā115074-RMP
| āRoss McKenzie
| ā4/30/2027
| āCalifornia
| ā925-436-8000
|
ā103415-RMP
| āRussell Vaughn
| ā7/31/2026
| āCalifornia
| āā530-273-6653
|
24MS001 |
Ryan Kawlewski
|
1/30/2026 |
Minnesota |
320-266-5798 |
ā114730-RMP
| āRyan Mandel
| ā11/30/2026
| āCalifornia
| ā510-300-7404
|
ā108234-RMP
| āSamuel Harreschou
| ā1/31/2027
| āCalifornia
| ā310-903-8656
|
ā21ST004-RMT
| āSantiago Arango Garces
| ā3/30/2027
| āFlorida
| ā954-540-0085
|
ā114036-RMP
| āScott Yamauchi
| ā1/31/2026
| āCalifornia
| āā714-831-7591
|
ā25MS026-RMS
| āSean Hanson
| ā3/30/2027
| āCalifornia
| ā657-365-9041
|
ā114532-RMP
| āShannon Esser
| ā8/31/2026
| āCalifornia
| ā209-601-0413
|
23MT044-RMT |
Shawn Mc Williams |
11/30/2025 |
California |
702-217-9794 |
ā111793-RMP
| āSherri De Mayo
| ā1/31/2027
| āFlorida
| 407-414-8292ā |
ā25MS016
| āShilpa Suil
| ā3/31/2027
| āCalifornia
| ā949-307-3522
|
ā25MS024-RMS
| āSophie Schoenberge
| ā3/30/2027
| āCalifornia
| ā920-536-2002
|
ā111271-RMP
| Stacey Winklerā
| ā4/30/2026
| āKentucky
| ā502-410-4999
|
113872-RMP |
Stephanie Grandstaff
|
7/31/2025 |
Florida |
813-244-8283 |
23MS053-RMS |
Stephen DeVita |
8/30/2025 |
Minnesota |
661-476-0502 |
109015-RMP |
Stephen Saturno |
10/31/2026
|
California |
530-414-3815 |
15SS050-RMS |
Steve Vaughn |
8/30/2025 |
California |
310-930-3355 |
105129-RMP |
Steve Zilolich |
10/31/2026
|
California |
707-239-2601 |
109217-RMP |
Tanya Laurent
|
6/30/2025 |
California |
310-990-7102 |
ā112500-RMP
| āTaylor McCleery
| ā9/30/2026
| āCalifornia
| ā279-900-4998
|
ā115002-RMP
| āTed Zeidan
| ā3/31/2027
| āCalifornia
| ā818-639-2396
|
ā114608-RMP
| āThomas Ayotte
| ā2/28/2027
| āCalifornia
| āā916-591-8442
|
104667-RMP |
Tim Utterback
|
1/31/2026 |
California |
510-450-6193 |
ā110242-RMP
| Tony Mashhourā
| ā2/28/2027
| āCalifornia
| ā661-341-1707
|
114256-RMP |
Tony Midmore
|
3/31/2026 |
Nevada |
775-323-1117 |
110443-RMP |
Tracy Huchingson
|
8/31/2025 |
California |
805-908-9274 |
ā109320-RMP
| āTracy Watson
| ā8/31/2025
| āTexas
| āā713-854-8670
|
107194-RMP |
Trevor Marion |
3/31/2026 |
California |
925-787-8411
|
109694-RMP |
Troy Sciumbato |
3/31/2026 |
California |
559-416-6134 |
108599-RMP |
Tucker Kalman |
4/30/2026 |
California |
415-723-0962 |
111818-RMP |
Vanessa Calder |
1/31/2027
|
California |
916-751-9568 |
22SS005-RMS |
William Kading |
2/28/2026
|
California
|
951-300-8396 |
110037-RMP |
William Mayes |
8/31/2026
|
California |
559-214-1070 |
ā24MS092-RMS
| āWilliam Overton
| ā12/30/2026
| āCalifornia
| āā760-613-4696
|
114895-RMP
|
Zachary Greenfield
|
1/31/2027
|
California
|
847-690-0905
|
āāMitigators
āThe mitigators listed below have met their board requirements
and have met specific CA Contractors License requirements. They are certified to operate in California.
āEddie Huchingsonā
| ā107621ā
| āā3/31/2027
| āā805-908-9274
| ā612436
|
āEdward Riley
| āā106415
| āā8/31/2026
| ā530-583-6653
| ā960994
|
āFred Ellrott
| ā101023
| āā11/1/2026
| ā805-732-2476
| ā617021
|
āJason Gregory
| ā107970
| ā5/ā31/2026
| ā805-244-6687
| ā843797
|
āJohn Henderson
| āā108871
| ā12/31/2026
| ā805-280-6616
| ā632908
|
āJordan Heichman
| ā106156
| ā11/4/2026
| ā530-621-4052ā
| ā816271
|
āNorman Denny
| ā106142
| ā8/31/2025
| ā775-691-7101
| ā241944
|
āPeter Mandelā
| ā104696
| ā3/31/2027
| ā510-300-7500
| ā839709
|
āCameron Dopke
| āā112346
| ā9/30/2025
| ā530-544-1865
| āā922311
|
āāDaniel Frayman
| āā114455
| ā1/31/2027
| ā818-749-8576
| ā1071369
|
A note about Contractors Licenses: Mitigators must also have a
valid California Contractors License in one of a few specific categories. You can look up your
contractorās license here to make sure it meets our
requirements.ā Mitigation Consultants
āThe mitigators listed below have met their board requirements but do not have a CA Contractors License. They may consult on mitigation princples and design, but are not authorized construct mitigation systems in California.
111075
|
Bradley Cord
|
1/31/2026
|
Indiana
|
317-642-6094 |
108882
|
Brandon Ford
|
12/31/2026
|
California |
530-544-1862 |
109575
|
Christopher Ferguson |
4/30/2026
|
Kentucky |
317-397-0326 |
101159 |
Darioush Ghahreman |
1/31/2026 |
California |
562-3235-6654 |
113095 |
Dwayne Campeau |
8/31/2026
|
California |
714-920-8084 |
113535
|
Fred Ellrott Junior |
6/30/2025
|
California
|
805-732-2476 |
ā105658
| āJennifer Sims
| ā6/30/2026
| āKentucky
| ā502-410-5000
|
ā114168
| āWinifred Cheuvront
| ā3/31/2026
| āKentucky
| ā502-410-5000
|
ā114322
| āReed Robins
| ā4/30/2026
| āTexas
| ā719-233-3466
|
āā113399
| āMichelle Brenner
| āā8/31/2026
| āKentucky
| ā502-410-5000
|
Laboratories
The testers listed below have met their bāoard requirements and are certified to operate in California:
Laboratories (PDF)
If someone offers you radon testing or mitigation and they are not on the approved lists here, they may NOT be certified to provide radon services in California.
To confirm a certification, reāāport a problem, or report a business selling radon services without the proper Certification, email the radon program at
radonprogram@cdph.ca.gov or call (916) 449-5674.
Any person offering radon testing services, who is nāot a certified professional, is in violation of CA Health and Safety Code sec 106790. Any test results would be invalid for legal purposes. Violation of this regulation is considered a misdemeanor and the individual may be fined up to $1,000, and their business will reported to the appropriate consumer protection agency or licensing board.