Mold in Miami: when you need a licensed assessor, when you need a remediator, and why Florida says they can't be the same company

Every Miami homeowner eventually meets mold: a black bloom behind the washer, a musty smell when the AC kicks on, a ceiling stain that keeps growing under a tile roof. What most do not know is that Florida regulates mold work more tightly than almost any other state, and the rules change who you should call and in what order.

Two licenses, two companies

Florida’s Chapter 468, Part XVI licenses two mold professions through the Department of Business and Professional Regulation:

• A mold assessor (license prefix MRSA) inspects, samples, identifies the moisture source, and writes a remediation protocol that says what has to be removed and how. They also return afterward to test that the job worked.
• A mold remediator (license prefix MRSR) does the removal: containment, negative air, taking out affected materials, HEPA cleaning, and treating the cause.

The law applies to anything larger than 10 square feet of growth (with exemptions, such as an owner working on their own home or a contractor acting within another license), and it bars the company that assessed a property from remediating it within the following 12 months, Division I contractors excepted. The reason is plain: the company that decides how much mold there is should not be the company paid to remove it.

So if a company offers to “test and remove it, same visit,” ask under which license it is working and how the rule applies to your job.

The sequence, done right

1. Assess. The assessor inspects and samples if needed, finds the water source, and writes the protocol. You get a written report. If the growth is small and the cause is obvious, a good assessor will say so and not sell you a remediation.
2. Fix the water. Mold is a symptom; the leak, the condensation, or the drainage problem is the disease. Remediation without fixing the source is a job you will do twice.
3. Remediate. A licensed remediator, normally a different company, follows the protocol. Containment matters: without it, disturbed mold spreads to the rest of the house through the AC.
4. Verify. The assessor comes back, does whatever testing the protocol calls for, and issues a written verification report. Keep it; it matters for a sale, a claim, or a tenant.

When you actually need this

• Growth you can see on drywall, ceilings, cabinets, or the exterior-wall side of furniture.
• A musty smell that comes back when the system runs, or from a closet with an exterior wall.
• A leak or flood that was not dried within a couple of days, even if it looks fine now. Drywall that was wet for a week has mold behind the paint.
• Stains that grow, paint that bubbles, drywall that gives when pressed.
• A home purchase or sale where an inspector flagged moisture.

What the licenses do not cover

Cleaning a few square inches of mildew off a bathroom ceiling is not a licensed activity; a contractor drying a fresh water loss is not doing mold work unless growth is present. Air-quality “testing” sold door to door after a storm is worth what the license behind it is worth; the MRSA number is public record.

Health, briefly

This site does not make health claims about mold. If someone in the house has asthma, allergies, or a weakened immune system and there is mold, talk to a doctor; the Florida Department of Health publishes plain guidance. Do not spray bleach on growth: it does not address wet material, it can hide the extent, and it complicates sampling.

If you have mold, or water that sat, call. Ask for an assessor first unless the source is obvious and the growth is large.

Related pages

• Mold inspection and remediation
• Water extraction and drying
• Service areas