Professional FAQs - National Radon Safety Board


The cost for radon measurement specialists, radon measurement technicians, and radon mitigation specialists certification is $125 for one year or $200 for two years.

The cost for laboratory accreditation is $125 for one year or $200 for two years.

The cost for Accredited Secondary Chamber application approval fee is $600 for initial certification or $350 annual fee.

The cost for Accredited Tertiary Radon Chamber application approval fee is $400 for initial certification or $250 annual fee.

The cost for Measurement Device Evaluation fee is $1,000.00 plus fees incurred for performance testing of new devices.

No. The NRSB will not offer any training, but will certify training courses and provide lists of approved course providers to applicants. All EPA recognized training courses will be recognized for the purpose of NRSB certification and new courses by qualified trainers will be encouraged. Fees will be set by the training providers.

Yes, the NRSB has developed exams for radon measurement technicians, radon measurement specialists and radon remediation specialists. You can find more information about the exams here:

All 3 NRSB exams (RMT, RMS and RRS) cost $120/each. You can find more information about exams here: 

Please check with the state radon representative to see if the state where you will be performing work has regulations.
You can find your states information here:

If you are taking the NRSB exam for a state license, you must check with your state
to make sure you are taking the correct NRSB exam. All exam fees are non-refundable.

The National Radon Safety Board is a bona fide non-profit organization run entirely by volunteers. It maintains no office, has no office overhead, pays no staff salaries, and receives no commissions for its exams or training. The NRSB contracts with an independent administrative service provider (i.e., a service provider with no ties to the NRSB or any of its Directors) for the processing of inquiries, certification applications and the oversight or exams. This assures applicants of prompt and professional service.

The administrative service provider receives 85% of all certification fees. The NRSB retains 15% of the fees for necessary expenses such as corporate fees, accounting, and insurance.

The following is a sample EPA Quality Assurance Program Guidance document in PDF (download here)

Of course! The purpose of the NRSB is to provide an assurance to the public that it can trust its radon service providers. The NRSB logo is free for use by anyone certified, accredited, or approved by the National Radon Safety Board. You can find versions of our logo here:

The NRSB is neither a trade association for the radon industry nor a constituent outreach group for health policy. The NRSB provides assurance that radon service providers meet high standards of technical expertise and professionalism. The NRSB provides independent third party certification.

US Mail: National Radon Safety Board
14 Hayes Street
Elmsford, NY 10523
Toll Free: (914) 345-1168
Fax Number: (914) 345-1169