Ohio Rev. Code Ann. § 3723.04
(A) Pursuant to division (B) of section 3723.02 of the Revised Code, an individual, business entity, or government entity conducting research regarding radon testing or mitigation may perform radon testing or mitigation without a license, if the owner or occupant of the building or real property where the research is to be conducted consents after being informed in writing of all of the following: