Clinical GradeHighest verification tier
Hays + Sons
Testing and remediation · Cincinnati, OH
- What they do
- Testing and remediation
- Insurance
- Certificate verified
- Google rating
- 4.8 284 reviews
Offers free estimates, the company says
Verified professionals · Ohio
Mold Remediation in Ohio
442 verified professionals across 134 cities
This page lists the 442 mold professionals we have identity-checked across 134 Ohio cities. We don't hold Ohio license records, so each listing shows only the checks we could complete.
Use it to compare companies near you, see what a typical job costs in the state, and know what to ask a contractor for before you hire.
Every listing identity-checked
Ohio Market Report
442
Providers Listed
Across 134 cities
2
Insurance Verified
Where a company supplied a certificate
$1,223 – $3,757
Typical Project Range
Nationwide, per HomeAdvisor
Is it licensed here?
Is mold remediation licensed in Ohio?
No. Ohio has no state license, registration or certification for mold remediation or mold testing, and a state home inspection does not include environmental testing. Ohio does not license residential contractors either, but your city, county or township building department may require local licensing or registration.
Whatever the state requires, a mold-specific certification from an industry body is worth asking for. Examples include the IICRC's course-based Applied Microbial Remediation Technician (AMRT) and its experience-based Mold Remediation Specialist (MRS), and the ACAC's Council-certified Microbial Remediator (CMR). Each requires an exam, and each can be checked with the body that issued it. These are held by individuals, not companies, so ask who on your job holds one.
Insurance is the other half. Ask for a certificate of insurance that names general liability coverage, and call the carrier on the certificate to confirm it is current. Then get the job in writing before anyone starts: what will be contained, what will be cleaned or removed, who will fix the moisture source, and how the finished work will be checked and documented.
Consumer Warning
Ohio has no state license, registration or certification for mold remediation. This makes verification critical. Anyone can buy a truck and call themselves a "Mold Expert." Every listing here is identity-checked, and we show IICRC certifications and insurance only where a company has supplied them for verification, so you can see what has actually been checked before you call.
What to ask a mold company for in Ohio
- A mold-specific certification held by the person who will run your job (IICRC AMRT or MRS, or ACAC CMR), checked with the issuer, not just a general contractor registration
- A certificate of insurance showing general liability, confirmed with the carrier
- A written scope: containment, what gets cleaned or removed, and who will fix the moisture source
- How the finished work will be checked and documented, with an independent check where the job calls for one
- Recent reviews under the same business name and address that appear on the quote
Top-rated companies
Top-rated mold remediation companies in Ohio
Ordered by verification tier, then by a review score that weighs volume and rating together, so a 4.8 from two hundred reviews outranks a 5.0 from three. Each card shows only the checks we could complete.
- Clinical GradeHighest verification tier
Hays + Sons
Testing and remediation · Dayton, OH
- What they do
- Testing and remediation
- Insurance
- Certificate verified
- Google rating
- 4.6 45 reviews
Offers free estimates, the company says
- Verified Pro
Technicare Home Pros
Mold remediation · Powell, OH
- What they do
- Mold remediation
- Insurance
- Not on file
- Google rating
- 5.0 1,537 reviews
- Verified Pro
Stanley Steemer
Mold remediation · Dublin, OH
- What they do
- Mold remediation
- Insurance
- Not on file
- Google rating
- 4.9 6,071 reviews
- Verified Pro
Roto-Rooter Plumbing & Water Cleanup
Testing and remediation · Euclid, OH
- What they do
- Testing and remediation
- Insurance
- Not on file
- Google rating
- 4.9 1,421 reviews
- Verified Pro
The Basement Doctor
Mold remediation · Reynoldsburg, OH
- What they do
- Mold remediation
- Insurance
- Not on file
- Google rating
- 4.9 1,344 reviews
What a typical job costs
What mold remediation costs in Ohio
$1,223 – $3,757typical job, nationwide
Source: HomeAdvisor, 7,952 reported project costs, June 2026
We don't have a figure specific to Ohio. This is the national range. A single contained problem, like one wall or a bathroom ceiling, often comes in under it; whole-basement or post-flood work runs over it. If you get an independent assessment before the work, which we recommend, it is priced separately from the remediation, and so is an independent check after it where the job calls for one. Both should be.
See the detailed cost guideSize it to your own job
Two questions give the range for a job like yours, and where each number comes from.
- How much
- A small patch, one area or room, several areas, or throughout the home
- Where
- On a surface I can see, inside walls or under floors, or in the AC or ducts
- Then
- Your ZIP finds verified pros near you
What comes back: the remediation range with its source, the assessor's visit and a clearance test, which not every job needs, as their own lines, and a total.
Estimate your costFree to use. An estimate, not a quote.
Cities by county
Browse Ohio cities by county
Every Ohio city with a listed professional, grouped by county. Pick a city to see its companies, or use the full list if your town is not here.
Franklin County
62 pros · 9 cities
Cuyahoga County
45 pros · 14 cities
Montgomery County
35 pros · 8 cities
Hamilton County
32 pros · 5 cities
Summit County
27 pros · 9 cities
Butler County
25 pros · 4 cities
Stark County
20 pros · 3 cities
Mahoning County
15 pros · 6 cities
Lake County
14 pros · 5 cities
Lorain County
13 pros · 6 cities
Fairfield County
12 pros · 4 cities
Richland County
12 pros · 3 cities
Medina County
11 pros · 3 cities
Delaware County
10 pros · 4 cities
Hancock County
9 pros · 1 city
Licking County
9 pros · 3 cities
Allen County
8 pros · 1 city
Muskingum County
7 pros · 3 cities
Clark County
5 pros · 1 city
Erie County
5 pros · 1 city
Wood County
4 pros · 3 cities
Warren County
3 pros · 3 cities
Greene County
2 pros · 1 city
Jefferson County
2 pros · 2 cities
Madison County
2 pros · 1 city
Ross County
2 pros · 1 city
Ashland County
1 pro · 1 city
Belmont County
1 pro · 1 city
Brown County
1 pro · 1 city
Darke County
1 pro · 1 city
Geauga County
1 pro · 1 city
Huron County
1 pro · 1 city
Jackson County
1 pro · 1 city
Lawrence County
1 pro · 1 city
Marion County
1 pro · 1 city
Mercer County
1 pro · 1 city
Miami County
1 pro · 1 city
Ottawa County
1 pro · 1 city
Perry County
1 pro · 1 city
Portage County
1 pro · 1 city
Putnam County
1 pro · 1 city
Seneca County
1 pro · 1 city
Tuscarawas County
1 pro · 1 city
Union County
1 pro · 1 city
Washington County
1 pro · 1 city
Wayne County
1 pro · 1 city
Other areas
3 pros · 3 cities
Questions people ask
Common questions about mold remediation in Ohio
Answered without a sales pitch.
How much does mold remediation cost in Ohio?
Nationally, a typical mold remediation job runs $1,223 to $3,757, from 7,952 project costs reported to HomeAdvisor. We don't have a figure specific to Ohio. The price moves with how much material has to come out, whether the moisture source is fixed in the same job, and whether containment and air filtration are needed. Get the scope in writing and ask how the finished work will be checked. If an independent check after the work is planned, ask what it will cost, because it is priced separately from the remediation.Does Ohio require a license to do mold remediation?
No. Ohio has no state license, registration or certification for mold remediation or mold testing, and a state home inspection does not include environmental testing. Ohio does not license residential contractors either, but your city, county or township building department may require local licensing or registration. Whatever the state requires, a mold-specific industry certification is worth asking for, such as IICRC AMRT or MRS, or ACAC CMR, each of which you can check with the body that issued it.Can you sell a house with mold in Ohio?
Selling is legal. What gets sellers in trouble is hiding a problem they knew about: in most states a known mold or water problem is a material defect that has to be disclosed, and a buyer's inspector tends to find it anyway. The two clean routes are to remediate before listing and keep the records that document the finished work, including any verification report, or to disclose it and price the work in.How do I check a mold company in Ohio?
Ask for three things and check each one yourself: a mold certification held by the person who will run your job, which you can find on the IICRC or ACAC public register, a certificate of insurance you confirm with the carrier, and a written scope of work. Then look the business up under the exact name and address on the quote. Our listings show which of those checks we could complete for each company.Is a free mold inspection a red flag?
Not on its own, but know what it is. A remediator inspecting your home before it quotes is normal, and a free visit is a fair way to get an estimate. It is not an independent assessment, though: a company that also sells remediation has a potential financial stake in what it finds. Our recommendation is to pay for an assessment from a company that will not do the remediation, which takes that incentive out of the diagnosis, and to have an independent check of the finished work where the job calls for one. That holds with or without a state license behind it.What can renters in Ohio do about mold?
Report the moisture problem to the landlord in writing, with photos and dates, and ask for the leak or ventilation fault to be fixed rather than the stain painted over. If nothing happens, the local building or code enforcement office can inspect for the underlying water problem even where there is no mold rule to enforce. Keep every message; a tenant remedy or a health complaint will rest on that record.
Helpful Guides
- Mold Remediation Cost GuideNational averages, cost factors, and insurance coverage
- Mold Exposure SymptomsHealth effects, who is most at risk, and when to see a doctor
- Mold Identification GuideWhat common household molds can look like, and what looks like mold but isn't
- How to Hire a Mold Company6-step checklist to verify credentials and avoid scams
- Bathroom Mold GuideCauses, prevention, and when bathroom mold needs a pro
- Does Vinegar Kill Mold? Some Species, Not OthersWhat it stopped in a lab test, what it can't do, and when to call a professional
Actively Verified
About Mold Remediation in Ohio
Ohio has no state license, registration or certification for mold remediation. Every listing is identity-checked, with state licenses, insurance, and reviews verified where available.