Florida mold licenses and certifications, explained
In Florida, “licensed and certified” isn’t marketing — it’s two different, checkable things. A state license (Mold Remediator, MRSR, or Mold Assessor, MRSA) is required by law for any mold job over ten square feet, and the state keeps a public record of whether it’s active, expired, or disciplined. An IICRC certification (such as AMRT, Applied Microbial Remediation Technician) is an industry credential that says the people doing the work were trained to a recognized standard. Good companies carry both; the license is the one the state can revoke. What the state demands before it issues one — a licensing exam, the §468.8421 insurance minimum, and a defined education-and-experience path — is set out in Florida’s mold license requirements.
Florida also splits the job in two on purpose. The company that assesses your mold — tests it, scopes it, writes the protocol — generally can’t be the same company that remediates it on the same property within twelve months. That rule exists because the firm writing the estimate shouldn’t be the firm profiting from inflating it. When one company offers to both “test and fix” your mold, that’s the exact spot homeowners get overcharged.
Which credential is required, and which is voluntary
Six credentials come up when you vet a Florida mold company, and only two of them are enforceable by the state. The rest are industry credentials — worth having, but no substitute for the license.
| Credential | Issued by | Required in Florida? | What it covers |
|---|---|---|---|
| Mold Assessor license (MRSA) | State of Florida (DBPR) | Yes — over 10 sq ft | Inspecting, sampling, and writing the remediation protocol — “mold assessment” as defined in §468.8411(3). |
| Mold Remediator license (MRSR) | State of Florida (DBPR) | Yes — over 10 sq ft | Containment, removal, drying, and cleaning — “mold remediation” as defined in §468.8411(5). |
| IICRC AMRT | IICRC (industry body) | No — voluntary | Applied Microbial Remediation Technician: training in the consensus containment and removal methods. |
| IICRC S520 | IICRC (industry body) | No — it is a standard, not a license | The Standard for Professional Mold Remediation — the procedures a finished job gets measured against. |
| ACAC CMRS | ACAC (independent certifier) | No — voluntary | Council-certified Microbial Remediation Supervisor: recognises remediation oversight. |
| ACAC CRMI | ACAC (independent certifier) | No — voluntary | Council-certified Residential Mold Inspector: recognises home mold inspection. |
A company can hold every voluntary credential on this list and still be unlicensed for the job in front of you. The two state licenses are the ones the DBPR can suspend or revoke, so those are the ones worth checking first.
These guides explain what each credential proves, how to read a license number, how to confirm it yourself on the state registry in about a minute, and why the assess-then-remediate split is a feature that protects you. Every contractor we list links straight to its source record, so a badge here is something you can check — not something you have to trust.
Certification guides
ACAC CMRS and CRMI Certifications, Explained
What ACAC's CMRS and CRMI mold certifications mean, how an inspector credential differs from a remediation certificate, and how Florida's license fits.
Florida Mold License Renewal (the July 31, 2026 wave)
Florida mold licenses renew by July 31 of each even year — the 14 CE hours and $105 fee DBPR requires, and how the 2026 wave actually landed.
Florida Mold License Requirements
Florida's 10-square-foot mold exemption sits in §468.8411(3), (5), Fla. Stat. — not a DBPR form. Official statute text, who needs a license, penalties.
Florida Mold-License Data 2026: The July 31 Renewal Cliff
The July 31, 2026 deadline has passed. Florida's current mold licenses fell from 8,079 to 5,606 — 2,488 of the 3,328 on the cliff did not renew. DBPR registry data.
How to Get a Florida Mold License
Step-by-step path to a Florida Mold Assessor or Remediator license: two eligibility routes, the exam, insurance, and background check under Chapter 468.
How to Verify a Mold Contractor in Florida
How to verify a Florida mold contractor's license on MyFloridaLicense — what MRSR and MRSA mean, the 12-month conflict rule, and the red flags to watch.
IICRC AMRT Certification, Explained
What IICRC AMRT certification means, how it differs from a WRT, how it relates to the S520 standard, and why a Florida state license still matters more.
Mold Assessor vs. Mold Remediator in Florida: What's the Difference?
A mold assessor (MRSA) inspects and writes the scope; a remediator (MRSR) does the removal. Florida keeps them separate — which one you need first.
Mold Licensing Requirements by State
Only 8 states license mold professionals — see which license assessors, remediators, or both, plus registration-only states, all 50 + DC with statute.
The IICRC S520 Mold Remediation Standard
A plain-language guide to the IICRC S520 mold remediation standard: what it requires, containment and clearance principles, and why carriers reference it.
Common questions
- Does a mold company in Florida need a state license?
- Yes. Under Florida law (Chapter 468, Part XVI), any mold assessment or remediation job larger than ten square feet must be done by a state-licensed professional — a Mold Assessor (MRSA) or a Mold Remediator (MRSR). The state keeps a public record showing whether each license is active, expired, or disciplined.
- What is the difference between a Florida mold license and an IICRC certification?
- A state license (MRSR or MRSA) is a legal requirement the state issues and can revoke. An IICRC certification — such as AMRT, Applied Microbial Remediation Technician — is a voluntary industry credential showing the crew was trained to a recognized standard. Good companies carry both, but only the license is enforceable by the state.
- Can the same Florida company test my mold and then remediate it?
- Generally no. Florida separates the two roles: the firm that assesses your mold — tests it, scopes it, writes the protocol — usually cannot also remediate it on the same property within twelve months (§468.8419). The rule keeps the company writing the estimate from profiting by inflating it.
- What do MRSR and MRSA mean on a Florida mold license?
- MRSR is a Mold Remediator license — the company that removes the mold. MRSA is a Mold Assessor license — the company that inspects, samples, and writes the remediation protocol. The prefix tells you which role the license actually authorizes.
- How do I verify a Florida mold contractor's license?
- Check the contractor's MRSR or MRSA number against the state's public DBPR registry at myfloridalicense.com, which shows whether the license is active, expired, or disciplined. Every contractor MoldVerified lists links straight to its source record, so you can confirm it yourself in about a minute.