Mold Inspector Certification: How to Become a Mold Inspector

Short answer: There is no federal mold inspector license, and EPA does not certify mold inspectors. A handful of jurisdictions license mold assessment themselves (Texas, Florida, New York and the District of Columbia), New Hampshire requires a national third-party certification, and everywhere else a private certification is the usual credential. Check your state first, then pick training that meets its rule.

Mold is an add-on many home inspectors consider, and one of the most misunderstood. The word "certified" gets used loosely, and the rules change sharply at state lines. In one state you can take air samples with a private certificate. In the next, doing the same thing without a state license breaks the law.

This guide sets out what the federal government does and does not do, which states license mold assessors and what they charge, where the private certifications fit, and how a working home inspector adds mold to the business without taking on risk they have not priced.

Is there a federal mold inspector license?

No. EPA says it plainly: "EPA does not regulate mold or mold spores in the air. EPA does not certify mold remediators or inspectors." EPA also has no standards for airborne mold levels, which matters when you write up sample results. There is no federal number to compare a spore count against.

That leaves two layers:

1. State law, which in a few places licenses mold assessment (inspecting, sampling and writing a remediation protocol) and sometimes remediation.
2. Private certification from a training body or association, which is the credential available in states without a license.

If you are not yet a home inspector, start with the pillar guide on becoming a home inspector. Many people who do mold work for real estate clients come to it through a home inspection business, and the home inspection license (where your state has one) is a separate credential from any mold license.

Which states license mold inspectors

These are the jurisdictions whose rules we confirmed on the regulator's own page or statute, as of September 2026. Fees and hours change. Confirm them with the regulator before you enroll.

Two more states regulate the remediation side only. Louisiana requires a mold remediation license for projects of $7,500 or more, through its State Licensing Board for Contractors. In Illinois, the Department of Public Health (IDPH) says its Mold Remediation Registration Code took effect on September 23, 2026. All mold remediators must now register with IDPH unless they qualify for an exemption, and registration requires proof of insurance and an approved third-party certification. Remediators already doing the work who submit a registration form may keep working without that certification until September 30, 2027. IDPH says professionals who only provide mold assessment services do not need to register.

We could not confirm current mold rules for Maryland or Virginia from those states' own pages, so this guide makes no claim either way. If you work there, or in any state not listed above, ask the state's licensing agency before you advertise mold assessment.

Texas: what a home inspector can do without a mold license

Texas draws a line that every inspector there should know, because it decides what goes in your report.

TDLR's FAQ says "a real estate inspector does not need a mold license to visually observe and note the presence of mold." Taking samples is different. TDLR calls collecting air or visible spore samples "mold assessment", and says a real estate inspector "must be licensed as a mold assessment technician or consultant" to do it. The samples must then go to a licensed lab.

So a TREC-licensed inspector can write "suspected microbial growth observed at the bathroom ceiling, recommend evaluation" without a mold license. Pulling an air cassette in the same bathroom needs one.

The Texas path itself:

1. Take the accredited course: 24 hours for a technician, 40 hours for a consultant.
2. Apply to TDLR and pay the license fee ($150 technician, $500 consultant).
3. Pass the state exam, run by PSI, with a 70% pass mark ($60 exam fee).
4. Meet the background check and insurance rules. The employer needs a Texas office and $1 million per occurrence of general liability, unless an exemption applies.
5. Renew with 8 hours of CE in the 2 years before expiration.

Florida, New York and DC in more detail

Florida. Mold assessment is licensed by DBPR under Chapter 468, Part XVI. The experience requirement is the hurdle for most new inspectors: an associate degree with 30 science hours plus a year of experience, or a high school diploma plus four years. Florida also separates assessment from remediation. A licensed assessor may not remediate a structure it assessed in the previous 12 months. Licenses expire July 31 of even years, with 14 CE hours per renewal.

New York. The Department of Labor runs the mold program under Labor Law Article 32. The Individual Mold Assessor License needs a 32-hour DOL-approved course, lasts two years and renews with a 4-hour refresher. The state eliminated the license fees. New York also prohibits "the performance of both the assessment and remediation on the same property by the same individual."

District of Columbia. DOEE licenses mold assessment. You need to be 18 or older, to have passed a DOEE-approved exam within the past two years, to meet an education and experience combination, and to carry $1 million of general liability and E&O. The application fee is $300 and renewal is $105 for a two-year license.

Private mold certifications

In most states no license exists, so the credential clients and agents see is a private certification. These are the two we checked. We describe them factually. This is not a ranking, and other providers exist.

A few things to check before you pay for any course:

• Does your state accept it? Florida names approved exams. New Hampshire requires accreditation by ANSI, CESB, NCCA or an equivalent body. A certificate that does not meet the rule is worth nothing there.
• What does it cover? Visual inspection, moisture mapping, sampling methods, chain of custody, reading lab reports and writing a protocol are different skills. A short course may cover only some of them.
• What does renewal cost? Some certifications are tied to a membership. Add the renewal to your yearly overhead.

For the broader question of what a certification is and is not, see home inspector certification explained. If you want to go past mold into whole-house air quality, read the indoor air quality certification guide.

Mold inspection vs mold assessment vs remediation

The words matter, because state law uses them.

• Observing and reporting visible growth or conditions that support it (a stain, a leak, high moisture readings) is part of a normal home inspection. Texas says so directly for its inspectors.
• Assessment usually means sampling and evaluating: taking air or surface samples, sending them to a lab, interpreting results and, in the licensed states, writing the remediation protocol.
• Remediation is removing and cleaning up the growth.

The licensed states keep assessment and remediation apart. New York bars one individual from doing both on the same property. Florida bars an assessor from remediating a structure it assessed within 12 months. Even where the law is silent, doing both creates a conflict that an agent or a lawyer will spot.

Adding mold to a home inspection business

Most mold inspectors who serve real estate clients sell it as an add-on to a home inspection. Before you list it on your online booking page, work through four questions.

1. Is it legal where you work? If you are in Texas, Florida, New York or DC, sampling needs the state license. In New Hampshire you need the national certification. Elsewhere, confirm there is no new rule.

2. Is your insurance ready? Check whether your E&O policy covers mold work, and add it if it does not. Florida and DC set $1 million minimums for their licensees. Read your policy, and see the guide to home inspector insurance.

3. What will it cost you per job? Lab fees per sample, cassettes, a pump and its calibration, shipping, and the time to write up results. Price it on its own numbers, as set out in how to price ancillary inspection services, not as a discount on the main inspection.

4. What will you say about results? EPA has no airborne mold standard. Your report needs to explain what was sampled, where, the lab's findings and what you recommend, without promising a number means the property is "safe".

Mold pairs naturally with radon, since both are about the air in the property. If you are building out ancillary services, the guide to radon testing as an add-on covers the other half.

Reporting mold work in Binsr

Clients and agents read a mold report differently from a home inspection report. They want the sample locations, the lab result and your recommendation, without scrolling through the roof section.

In Binsr, one inspection can produce multiple reports, each with its own template. You can deliver the home inspection and a separate mold report from the same visit, and lock or hide either report from the client until it is ready, for example while you wait on the lab. Photos attach at the level of the individual finding, so the image of the stained drywall sits next to the comment about it.

You do not need software on day one of a mold course. It matters once you are running two report types from one visit.

How long it takes

It depends almost entirely on your state.

• Unregulated states: the length of your chosen course, plus the time to pass its exam.
• Texas technician: a 24-hour course, then the TDLR application and the PSI exam.
• New York: a 32-hour course, then the DOL application.
• Florida and DC: the experience requirement is the long pole. Florida asks for one to four years of experience depending on your education, so a new inspector may not qualify yet.

Frequently asked questions

Keep reading

• How to become a home inspector
• Home inspector license requirements
• Indoor air quality specialist certification
• Radon testing as an add-on service
• How to become a septic inspector
• How to price ancillary inspection services

New to inspecting? Your first 20 inspections on Binsr are free. Newly licensed inspectors get 20 free inspections on Binsr Pro, with the AI features included. See how to claim them.