Sherlock Homes PS, LLC
Moncks Corner, SC
Listed for: TestingMitigation
Verified:Florida state license+5 more: Iowa state license, Illinois state license, Minnesota state license, Nebraska state license, Ohio state license
Who tests and fixes radon in South Carolina, what South Carolina's own program says about licensing, and how to check a credential before you hire.
Updated October 2, 2026
None that South Carolina licenses yet. The businesses below have an address here and another state licenses them.
No business licensed by South Carolina is listed here yet.
These businesses have an address in South Carolina, and another state's registry lists them. That does not mean South Carolina licenses them: check with South Carolina's radon program before hiring one for work here.
2 professionals located in South Carolina and listed by another state.
On this page: 1 testing and mitigation, 1 testing
Moncks Corner, SC
Listed for: TestingMitigation
Verified:Florida state license+5 more: Iowa state license, Illinois state license, Minnesota state license, Nebraska state license, Ohio state license
Listed for: Testing
Verified:Pennsylvania state license
2 cities in South Carolina with a listed business address.
Cities in South Carolina: 1 of 2
Short answer
No business that South Carolina itself licenses or certifies is listed on Radon411 yet. Ask South Carolina Radon Program what it requires before you hire.
2 businesses with an address in South Carolina appear in a separate list because another state's registry lists them. That does not mean South Carolina licenses them.
The rule
South Carolina's radon program page, checked on October 3, 2026, does not say whether the state licenses or certifies radon professionals. Ask the program before you hire.
South Carolina is not on the list of states with radon credentialing programs that EPA's state contacts page publishes. Licensing is done by the state, not by the national programs, and EPA requires states that receive radon grants to give the public a list of only those providers credentialed by the state or by NRPP or NRSB.
State program
The state's own radon program: the place to ask who may work in the state.
South Carolina Radon Program
South Carolina Department of Environmental Services
Its page covers free or discounted test kits.
Phone 1-800-768-0362 · Email radon@des.sc.gov
Visit the program's page (opens in a new tab)Read October 3, 2026
Nearby
A business licensed in a neighboring state is licensed there, not necessarily in South Carolina. Check South Carolina's rule above before you hire one.
Before you hire
Hiring
Ask for the credential and ID card, how the test will be guarded against interference, and when the report will come. EPA recommends an independent, qualified tester for the test after a system is installed.
Get more than one estimate, contact references, and ask for a written proposal and a contract before any work starts.
Questions
South Carolina's radon program page, checked on October 3, 2026, does not say whether the state licenses or certifies radon professionals. Ask the program before you hire.
South Carolina is not on the list of states with radon credentialing programs that EPA's state contacts page publishes.
No business is listed for mitigation in South Carolina on Radon411 yet.
Your state radon program can help you find qualified professionals in the state, and NRPP and NRSB, the two national proficiency programs EPA names, each publish a search of the professionals they certify.
No business is listed for radon measurement in South Carolina on Radon411 yet.
A qualified radon tester is very often a home inspector, and your state radon office can give you its approved list of radon testing companies.
South Carolina Radon Program's page, checked on October 3, 2026, says:
The South Carolina Radon Program offers free short-term radon test kits to South Carolina homeowners, subject to availability.
No listing here is a license. The first list holds businesses South Carolina's own registry lists, or that confirmed their own listing; each card names its source.
2 businesses with an address in South Carolina appear in a separate list because another state's registry lists them. That does not mean South Carolina licenses them.
How listings are verified. Run a radon business in South Carolina? Get Featured.
Next steps
No business licensed by South Carolina is listed here yet.
These businesses have an address in South Carolina, and another state's registry lists them. That does not mean South Carolina licenses them: check with South Carolina's radon program before hiring one for work here.
2 professionals located in South Carolina and listed by another state.
On this page: 1 testing and mitigation, 1 testing
Moncks Corner, SC
Listed for: TestingMitigation
Verified:Florida state license+5 more: Iowa state license, Illinois state license, Minnesota state license, Nebraska state license, Ohio state license
Listed for: Testing
Verified:Pennsylvania state license