Homeowners who have dealt with mold in Florida or Texas sometimes assume Ohio works the same way, with a state license number to look up before anyone touches a wall. It does not. Ohio has no state license for mold remediation, and knowing that changes what you should check before you hire someone.
What Ohio does and does not regulate
The Portage County Health District puts it plainly: unlike lead and asbestos remediation contractors, companies working to remediate mold do not have to be registered with the State of Ohio. The health district recommends discussing and understanding the services that mold remediation firms provide (Portage County Health District, Mold).
The Ohio Healthy Homes Network says the same thing from the other direction: no certification or licensing requirements exist in Ohio for mold inspectors and remediators, and the Ohio Department of Health has a very limited role with regard to mold, though it will answer questions from the public (Ohio Healthy Homes Network, Mold Basics).
Two consequences follow for homeowners.
- There is no state lookup that tells you whether a mold company in Ohio is qualified. You have to ask different questions.
- A claim to be “state licensed” for mold work in Ohio cannot refer to an Ohio mold license, because none exists. If a company uses that phrase, ask exactly which license it means and who issued it.
Private industry certifications do exist. They are issued by private organizations, not by the state, and what they cover varies. Ask what the certification is, who holds it within the company, and whether that person will be on your job.
The guidance Ohio homeowners can lean on
Without a state rulebook, the most useful reference is federal. The U.S. Environmental Protection Agency’s guide for homeowners sets out a few principles that work as a checklist (EPA, A Brief Guide to Mold, Moisture and Your Home).
Size
EPA says that if the moldy area is less than about 10 square feet, roughly a 3 foot by 3 foot patch, in most cases you can handle the job yourself. If there has been a lot of water damage, or mold covers more than 10 square feet, EPA points to its more detailed remediation guidance.
Source
If the water or mold damage was caused by sewage or other contaminated water, EPA says to call in a professional who has experience cleaning and fixing buildings damaged by contaminated water. In a basement with a floor drain, that possibility is worth keeping in mind. Our article on basement flooding cleanup covers the water side.
Moisture
EPA is direct about this: if you clean up the mold but do not fix the water problem, the mold problem will most likely come back. It also advises drying water-damaged areas within 24 to 48 hours to prevent mold growth.
Ductwork
If you suspect the heating and cooling system is contaminated with mold, EPA says not to run it, because it could spread mold through the building.
What to check instead of a license
EPA’s advice on hiring is short. If you hire a contractor, make sure the contractor has experience cleaning up mold, check references, and ask the contractor to follow the recommendations in EPA’s guidance on mold remediation, the guidelines of the American Conference of Governmental Industrial Hygienists, or other guidelines from professional or government organizations.
Turned into questions for an Ohio company:
- Which written guideline will you follow? A company that names one can show you how the job matches it.
- What is the scope, in writing? Which materials come out, which get cleaned, and how the work area will be contained.
- What caused the moisture, and who is fixing it? If the answer is “not our job,” find out who will do it before remediation starts.
- How will we both know the job is done? With no state standard to point to, agree on what “finished” means before work begins.
- Can I speak to recent customers? EPA lists references specifically.
- Who is doing the testing, if any? Some homeowners prefer that the company that tests is not the company that profits from the removal. Ohio does not require that separation, but you can choose it.
That last point is one of the main differences from states that license mold work, where separating assessment from remediation is built into the rules. In Ohio, it is your decision.
How quickly mold starts after a leak is covered in our mold growth timeline, and our general list of questions to ask a restoration company applies to mold work too.
Questions homeowners ask
Does Ohio require a license for mold remediation?
No. Companies that remediate mold do not have to be registered with the State of Ohio, according to the Portage County Health District, and the Ohio Healthy Homes Network states that no certification or licensing requirements exist in Ohio for mold inspectors and remediators.
Can I remove mold myself in Ohio?
EPA says that for areas less than about 10 square feet, in most cases you can handle the job yourself. For larger areas, a lot of water damage, or damage from sewage or other contaminated water, EPA points to professional help.
Who can I ask about mold in Ohio?
The Ohio Healthy Homes Network notes that the Ohio Department of Health will answer questions from the public, although its role with regard to mold is limited. Your local health district is another place to start.
What should a mold remediation contract in Ohio include?
At minimum, the written scope, the guideline the company will follow, how the work area will be contained, who is fixing the moisture source, and how completion will be confirmed.
Our mold remediation page explains how mold requests fit alongside water damage work.
Checking what is available in your area
waterdamagefirstresponse.com is a connection service. We do not perform restoration or mold remediation and we do not employ technicians. If you are dealing with interior water damage in an Ohio home and want to be matched with participating providers, you can use the request options on this site. Availability varies by area, and you decide whether to move forward with anyone you speak to.