☢️ Radon Mitigation License Requirements by State

Compare radon mitigation license requirements across all 50 states and DC — experience, exams, fees, and salary data.

Last updated 2026-05-08

By the numbers: 16 of 51 jurisdictions require a state-level radon mitigation license. Apprenticeship and Experience requirements range varies hours. Exam Application Fees range $100–$100. Most state Boards require Continuing Education at every Renewal cycle.

State	License Required	Experience	Exam Fee	Median Salary
ALAlabama	Not Required	—	—	$43,604
AKAlaska	Not Required	—	—	$62,148
AZArizona	Not Required	—	—	$48,616
ARArkansas	Not Required	—	—	$42,100
CACalifornia	Not Required	—	—	$69,165
COColorado	Required	—	$100	$54,129
CTConnecticut	Required	—	$100	$57,637
DEDelaware	Not Required	—	—	$50,120
DCDistrict of Columbia	Not Required	—	—	$64,153
FLFlorida	Required	—	$100	$48,115
GAGeorgia	Not Required	—	—	$46,611
HIHawaii	Not Required	—	—	$67,662
IDIdaho	Not Required	—	—	$47,112
ILIllinois	Required	—	$100	$52,626
INIndiana	Not Required	—	—	$45,609
IAIowa	Required	—	$100	$44,606
KSKansas	Required	—	$100	$44,606
KYKentucky	Not Required	—	—	$44,606
LALouisiana	Not Required	—	—	$45,108
MEMaine	Required	—	$100	$48,616
MDMaryland	Not Required	—	—	$54,630
MAMassachusetts	Not Required	—	—	$61,146
MIMichigan	Not Required	—	—	$47,112
MNMinnesota	Required	—	$100	$52,124
MSMississippi	Not Required	—	—	$41,599
MOMissouri	Not Required	—	—	$45,108
MTMontana	Not Required	—	—	$48,115
NENebraska	Required	—	$100	$45,108
NVNevada	Not Required	—	—	$51,122
NHNew Hampshire	Required	—	$100	$52,124
NJNew Jersey	Required	—	$100	$59,141
NMNew Mexico	Not Required	—	—	$45,609
NYNew York	Required	—	$100	$65,156
NCNorth Carolina	Not Required	—	—	$46,110
NDNorth Dakota	Not Required	—	—	$47,614
OHOhio	Required	—	$100	$46,110
OKOklahoma	Not Required	—	—	$43,604
OROregon	Not Required	—	—	$55,132
PAPennsylvania	Required	—	$100	$49,117
RIRhode Island	Required	—	$100	$51,623
SCSouth Carolina	Not Required	—	—	$45,609
SDSouth Dakota	Not Required	—	—	$44,105
TNTennessee	Not Required	—	—	$45,108
TXTexas	Not Required	—	—	$47,112
UTUtah	Not Required	—	—	$48,616
VTVermont	Not Required	—	—	$50,621
VAVirginia	Required	—	$100	$51,122
WAWashington	Not Required	—	—	$59,141
WVWest Virginia	Not Required	—	—	$43,103
WIWisconsin	Not Required	—	—	$47,112
WYWyoming	Not Required	—	—	$47,614

Common questions about radon mitigation licensing

Do all states require a radon mitigation license?

No — 16 of 51 jurisdictions require a state-level radon mitigation license. The remainder license at the local or county level, or not at all. See the table above for the per-state breakdown.

How much does it cost to get a radon mitigation license?

Application fees across the states range $100–$100. Renewal fees and continuing education hours vary by jurisdiction — check the state-specific page for the exact numbers.

How many apprenticeship hours does a radon mitigation license typically require?

Required apprenticeship/work experience hours range varies across states, with most states requiring 2–4 years of supervised on-the-job training plus passing a board-administered exam.

Data last verified 2026. Salary data from BLS OEWS. Always verify with your state licensing board.