Whether you need a license to be a mold inspector is decided state by state.
As of October 2026, Texas, Florida, New York and Washington, DC issue a state license covering mold assessment — the credential states call "mold assessor" — while Louisiana licenses the remediation side, with no assessor license found on the board's pages.
Outside those states our research found no state assessor license, and the credential questions shift to employers, clients, certification bodies and the state rules that reach mold work through other doors.
Do mold inspectors need a license?
In the licensing states the answer is yes, and the rule has teeth.
New York's Department of Labor says it is unlawful for any person to engage in, advertise as or hold themselves out as a mold assessor, remediation contractor or abatement worker without a valid license from the Commissioner of Labor.
Each state names the inspection credential its own way: Florida and New York call it the mold assessor license, Texas licenses the inspection side through its Mold Assessment Technician, Mold Assessment Consultant and Mold Assessment Company credentials, and DC licenses mold assessment professionals.
Assessment is the states' term for the inspection work.
Outside those states, our research found no state assessor license on the agency pages we read.
That is a research position, not a ruling, because contractor licensing, home improvement registration, certification mandates and pending programs still reach mold work through other doors.
The sections below take those rules state by state.
At the federal level, OSHA has no mold-specific standard; its mold page points to general sanitation standards and to non-regulatory consensus standards such as IICRC S500 and S520.
EPA's material for professionals is guidance — the Mold Remediation in Schools and Commercial Buildings guide.
Our research found no federal mold certification or license.
Keep license and certification apart when you read job ads, too.
A license is a state agency's permission to practice; a certification is a credential from a body such as ACAC or the IICRC.
Some state application paths accept certifications — DC's experience path takes a professional certification, and ACAC reports exam scores directly to state licensing agencies for license applicants — but holding a certification is not the same as holding the license where a state issues one.
What the role does between inspections is the mold inspector hub.
Rules change — confirm with the agency
Which states license mold assessors?
The licensing map for the inspection side, as each agency's own pages read in October 2026.
| State | Agency | The assessment credential | Scope |
|---|---|---|---|
| Texas | TDLR | Mold Assessment Technician, Mold Assessment Consultant, Mold Assessment Company | Three of the mold program's seven credential types. |
| Florida | Florida DBPR | Mold Assessor (MRSA) | Mold growth greater than 10 square feet. |
| New York | New York DOL | Mold Assessor | Mold projects over 10 square feet. |
| Louisiana | Louisiana LSLBC | No assessor license found on the board's pages — the Mold Remediation license covers the removal side | Remediation projects of $7,500 or more. |
| Washington, DC | DC DOEE | Mold assessment professional | Two-year license term. |
Texas.
The state licenses both sides of the trade through TDLR, which took the program over from DSHS on November 1, 2017; the rules sit in Texas Occupations Code Chapter 1958 and 16 Texas Administrative Code Chapter 78.
Assessment work runs through three of the program's seven credential types — Mold Assessment Technician, Mold Assessment Consultant and Mold Assessment Company.
Florida.
The Department of Business and Professional Regulation licenses mold assessors under the MRSA license type and mold remediators under MRSR.
The statutory trigger sits in § 468.8411, Florida Statutes: the mold license covers assessment or remediation of mold growth greater than 10 square feet.
New York.
The Department of Labor runs the Mold Program under Article 32 of the Labor Law, licensing mold assessors alongside remediation contractors and abatement workers, on mold projects over 10 square feet.
Homeowners are the statutory exception on their own property — Labor Law § 933.1 lets a residential owner perform mold assessment on their own property without a license.
Louisiana.
Our research found no Louisiana mold assessor license on the board's pages.
LSLBC, the Louisiana State Licensing Board for Contractors, publishes a Mold Remediation license for remediation projects of $7,500 or more.
That license is a contractor business license with a qualifying party rather than an individual credential.
The qualifying party's 24 hours of required training covers basic mold assessment alongside the remediation hours.
Confirm the assessment side with LSLBC directly before you contract inspection work there.
Washington, DC.
DOEE licenses mold assessment and mold remediation professionals for two-year terms.
Its published application also spells out the requirement set an inspector meets — age, exam, experience paths, insurance and fees — so it anchors the requirements section below.
Per-state detail on the remediator tiers, fees and renewal — and on states that issue no license — is the mold license by state guide.
That page owns the removal side of the map; this one stays on the inspection side.
Mold assessor license requirements: education, experience, exam and insurance
Each program asks for something different.
What follows is what each agency's own pages require, as published in October 2026 — treat every number as a check-the-agency number, because fees and course rules change.
Texas.
The assessment technician's initial course must run at least 24 training hours and end in a 50-question test, under TDLR's rules at 16 TAC §78.68.
The assessment consultant's initial course runs at least 40 hours with a 100-question test.
Continuing education courses run 8 hours (4 for remediation workers).
Florida.
Both mold license types — assessor and remediator — require 14 hours of DBPR-approved continuing education per renewal.
The renewal fee is $105.00 as listed by DBPR, and licenses expire on July 31 of even-numbered years.
New York.
The assessor's initial credential is a 4-day Mold Assessor course — the longest of the three tracks, next to the 3-day remediation contractor course and the 2-day abatement worker course.
Licenses last two years, and every renewal requires a 4-hour Department-approved refresher course, the same refresher for every license type, which providers may deliver as a live online course.
Washington, DC.
DOEE's published application is the fullest requirement set.
An applicant must be at least 18, must have passed a DOEE-approved mold examination within the past two years, and must meet one of three education-and-experience paths.
- A high school diploma plus 3 years of experience across six jobs.
- An associate degree or higher, with 30 semester hours in a related science, plus 1 year of experience.
- A professional certification — the agency names CIH and PE as examples — plus 6 months of experience.
The exam comes from DOEE's approved provider list, which has included Aerosol Monitoring & Analysis, whose listed options cover a Mold Inspection & Assessment course and exam and a 24-Hour Mold Remediation Supervisor track.
Insurance is written into the license: at least $1,000,000 in general liability, with errors-and-omissions coverage for assessors and mold-and-pollution-inclusive general liability for remediators.
The application fee is $300 and renewal is $105, on the two-year term.
Louisiana.
The requirements attach to the remediation business license rather than an individual assessor credential.
The qualifying party documents 24 hours of training in mold remediation and basic mold assessment, a financial statement showing a minimum of $25,000 net worth, the Business and Law course, general liability insurance of at least $50,000 and proof of workers' compensation coverage.
The board's approved training-provider list includes at least one 24-hour course delivered by internet or web.
Third-party certifications plug into some applications.
ACAC reports certification exam scores directly to state licensing agencies for license applicants; which exams a given state accepts is settled on that state's own approved list, so check it before you book a seat.
DC's certification-plus-experience path is the example on this page of a state license a professional credential can shorten.
Assessor vs remediator: conflict-of-interest rules
Texas, Florida and New York each write a separation between mold assessment and mold remediation into their rules, and each draws the line differently.
Read them before you quote a job that includes both a clearance inspection and a repair.
New York draws the line at the licensee and at ownership.
Labor Law § 936(2) provides that no licensee shall perform both mold assessment and mold remediation on the same project, and the same section bars any person from owning an interest in both the assessor and the remediator on the same property.
Texas splits at the credential holder.
One person or company may hold assessment and remediation credentials at the same time, but may not conduct both activities on the same project — the exception TDLR's FAQ describes is a school-district employee working on a project for their own district.
Florida runs the separation on a clock.
A mold assessor, or the assessor's company, may not perform mold remediation on a structure the assessor assessed within the last 12 months, and a mold remediator may not assess a structure the remediator remediated within 12 months.
Certified Division I contractors are the statutory exception.
Louisiana licenses the removal side; our research found no assessor credential on the board's pages to sit on the other side of a conflict rule.
Where the separation rules do apply, the effect for an inspector is scope: the assessment on a project and its remediation cannot come from the same licensee in New York, the same credential holder in Texas, or the same company inside Florida's 12-month window.
Unlicensed states: what clients and employers require
In the states where our research found no mold assessor license, "what do I need to inspect?" is answered by everyone except a licensing board.
The parties are the client, the employer, and the state rules that reach mold work through other doors — contractor licensing, home improvement registration and certification mandates.
The state picture has texture, and it moves:
New Hampshire reaches the inspection side through certification rather than a state license.
Since January 1, 2016, RSA 310-A:189-b has barred anyone from performing residential mold assessment for pay without a valid national third-party certification for mold assessment.
The rule covers assessment — inspection, protocol writing and sampling — not remediation.
Virginia.
The state ran a licensing program for mold inspectors and remediators once: the Mold Inspector and Remediator Regulations took effect July 1, 2011, and were repealed effective August 15, 2012, leaving no current state mold inspector or remediator license under the board that issued them.
What exists now is a certification mandate on the remediation side.
Selling residential mold remediation services without a mold remediation certification from a nationally or internationally recognized certifying body is a Consumer Protection Act violation under Virginia Code § 59.1-200(A)(81), and the rule also requires following the EPA mold guide, ANSI/IICRC S520 or an equivalent ANSI-accredited standard.
Illinois.
The Mold Remediation Registration Act (Public Act 103-0893) is enacted, but IDPH's page says the registration requirements are not in effect until the department adopts pending rulemaking, proposed October 17, 2025.
Until the rules are adopted, mold remediation professionals are not required to register with IDPH.
Connecticut.
From October 1, 2026, residential restoration and mold remediation on residential property are home improvement under Public Act 26-100, so the firm works through home improvement contractor registration.
A certificate for a contractor who performs mold remediation issues only with an attestation of certification by the IICRC, NORMI or another organization the Department of Consumer Protection commissioner approves, and the remediation must follow ANSI/IICRC S520, Fourth Edition, or a DCP-approved successor.
Those sections name remediation contractors rather than assessors.
Maryland.
A mold remediation firm licensing law passed in 2008 — Chapter 537, Maryland Home Improvement Commission — was never implemented for lack of funding and was scheduled to terminate July 1, 2019.
Tennessee.
Mold Remediation is an S-Specialty/Environmental classification within the state's contractor licensing rules, at Rule 0680-01-.16.
The designated employee must hold the required training and be on site while the work is in progress.
Alabama states its position outright: the Department of Public Health said in an October 2026 news release that Alabama does not license mold remediation services or keep a list of approved remediators, and points to IICRC-certified professionals instead.
With no board setting the bar, the credential line on an inspection résumé comes from third-party certification.
ACAC offers mold inspection credentials including the Council-certified Microbial Investigator (CMI, 2 years of field experience), the Council-certified Microbial Consultant (CMC, 8 years) and the Council-certified Residential Mold Inspector (CRMI).
Its accredited programs are accredited by CESB, the Council of Engineering and Scientific Specialty Boards.
Candidates document field experience with four project sheets plus transcripts, and the credential is awarded by unanimous approval of the certification board.
The mechanics, as ACAC publishes them: exams are closed-book, 75 to 120 multiple-choice questions, taken at a Kryterion testing center or by online video proctoring, with a $100 re-exam fee after a failed attempt.
Accredited certification costs $500 for the first two-year term and $400 per recertification.
Keeping the credential takes 40 Re-certification Credits per two-year term — 10 for staying active in the field plus 30 hours of documented professional development.
For the career route itself — which backgrounds feed inspection work, how certification, insurance and equipment stack up, and how first clients come in — the how to become a mold inspector guide walks the sequence step by step.
Career information for restoration workers and employers, not licensing, legal, insurance, health or safety advice. License programs, thresholds, fees and hour rules change — Illinois's registration is pending and Connecticut's rules took effect October 1, 2026. Confirm current requirements with the agency named: TDLR, the Florida DBPR, the New York Department of Labor, the Louisiana LSLBC, DC DOEE, IDPH or your own state's contractor licensing board.