Mold Remediation License Requirements by State

It depends on the state — our research found no federal program that issues one.

OSHA has no mold-specific standard; its mold page points to general sanitation standards (1910.141 and 1926.51) and to non-regulatory consensus standards such as IICRC S500 and S520.

EPA's guide for remediation professionals, Mold Remediation in Schools and Commercial Buildings, is published as guidance rather than a licensing program.

Where a state does license the work, the license is the state's own permission to practice — a different thing from a certification.

An IICRC or ACAC certificate is a credential from a certifying body, and a contractor or home improvement registration is the firm's registration to contract.

The difference matters on the job: holding a certification is not the same as holding the license where a state requires one.

State approaches fall into a range.

Texas, Florida, New York, Louisiana and Washington, DC run mold licensing programs, each through its own agency with its own credential types.

Connecticut, Virginia and Tennessee attach their requirements through other laws — home improvement registration with a certification attestation, a Consumer Protection Act certification mandate, and a contractor-license classification.

Illinois sits in between: a registration program enacted, but not in force until the state's health department adopts rules.

The licensing map, as of October 2026, reads like this.

Each program sets its own license types and rules; the table gives the shape, and the paragraphs below add the training, exam, fee and insurance rules a technician or a company meets on a job.

Texas.

The state licenses both sides of the work through TDLR, which took the program over from DSHS on November 1, 2017.

The rules sit in Texas Occupations Code Chapter 1958 and TDLR's rules at 16 Texas Administrative Code Chapter 78.

One staffing rule applies where the two sides meet on one project: a person or company may hold assessment and remediation credentials at the same time, but may not perform both on the same project — school-district employees working for their district are the exception.

Florida.

The Department of Business and Professional Regulation licenses mold assessors (MRSA) and mold remediators (MRSR), and the statutory trigger sits in § 468.8411, Florida Statutes: the license covers assessment or remediation of growth greater than 10 square feet.

Two conflict rules follow.

An assessor, or the assessor's company, may not perform remediation on a structure it assessed within the last 12 months, and a remediator may not assess a structure it remediated within 12 months — certified Division I contractors are the statutory exception.

The mold license also does not cover rebuild work that requires a Chapter 489 construction license, unless the person holds that license or the work complies with it.

New York.

The Department of Labor runs the Mold Program under Article 32 of the Labor Law.

It is unlawful to work as, advertise as or hold oneself out as a mold assessor, remediation contractor or abatement worker without a valid license from the Commissioner of Labor.

The program reaches mold projects over 10 square feet.

Residential property owners are the statutory exception on their own property — Labor Law § 933.1 lets an owner perform mold inspection, assessment, remediation or abatement on the owner's own property without a license.

Louisiana.

LSLBC requires a Mold Remediation license for remediation projects worth $7,500 or more, and the qualifying party needs 24 hours of training in mold remediation and basic mold assessment.

The state's licensing reaches the remediation side: our research found no Louisiana mold assessor license on the board's license pages, so confirm the assessment side with LSLBC directly.

Washington, DC.

DOEE licenses mold assessment and mold remediation professionals for two-year terms.

Applicants must be at least 18, must have passed a DOEE-approved mold examination within the past two years, and must meet one of the agency's education-and-experience paths — the details sit in the requirements section below.

Insurance is written into the license as well: at least $1,000,000 in general liability coverage including mold-related and pollution coverage for remediators, with errors-and-omissions coverage for assessors.

The states in motion.

Illinois enacted the Mold Remediation Registration Act (Public Act 103-0893), but registration is not in effect until IDPH adopts rules — proposed October 17, 2025 — and until then mold remediation professionals are not required to register with IDPH.

Maryland passed a mold remediation firm licensing law in 2008, Chapter 537, but it was never implemented for lack of funding and was scheduled to terminate July 1, 2019.

Connecticut's Public Act 26-100, from HB 5222, folds water, fire or storm restoration and mold remediation on residential property into the Home Improvement Act from October 1, 2026.

A separate bill, HB 5227, that would have created commercial mold remediator registration and a fire and catastrophic restoration business license did not pass.

The states name their tiers differently, and the names decide which credential a technician, a crew lead or a company actually needs.

Four shapes appear across the five programs: a worker-level registration, an individual professional license, a company license, and the assessor license on the inspection side.

Texas issues seven credential types through TDLR:

• Mold Remediation Worker Registration — the worker-level tier on the remediation side.
• Mold Assessment Technician — the assessment side's technician credential.
• Mold Remediation Contractor.
• Mold Assessment Consultant.
• Mold Assessment Company and Mold Remediation Company — company credentials separate from the individual ones.
• Mold Analysis Laboratory.

New York's list is three license types, and the initial course length follows the license: a 4-day Mold Assessor course, a 3-day Mold Remediation Contractor course, or a 2-day Mold Abatement Worker course.

The worker tier is the short route — the 2-day course — while the assessor and contractor licenses carry the longer initial training.

Florida and Washington, DC each run two professional licenses — assessor and remediator (MRSA and MRSR in Florida; mold assessment and mold remediation professionals in DC).

Louisiana issues a single Mold Remediation license — a contractor (business) license with a qualifying party who carries the training and financial requirements.

So the tier a tech holds depends on the state: a worker registration in Texas, an abatement worker license in New York, the assessor and remediator licenses in Florida and Washington, DC, and Louisiana's single Mold Remediation license.

The assessor and remediator licenses are kept apart on purpose.

New York bars a licensee from performing both mold assessment and mold remediation on the same project, and bars any person from owning an interest in both the assessor and the remediator on the same property (Labor Law § 936).

Texas lets one holder carry both credential types but not use both on the same project, school-district employees excepted.

Florida's version runs on a clock: the 12-month bar between assessing and remediating a structure, in either direction — the Division I contractor exception described above still applies.

Each program sets its own mix of initial training, exam, insurance, fee and renewal rules, and the numbers belong to each state.

What follows is what the agencies' own pages state, with the figures as published; fees and course requirements change, so confirm with the agency before you rely on one.

New York.

Initial training runs by license type: a 4-day Mold Assessor course, a 3-day Mold Remediation Contractor course, or a 2-day Mold Abatement Worker course.

Licenses last two years, and every renewal requires a 4-hour Department-approved refresher course — the same for all license types.

The refresher can be delivered as a live online course; the initial course cannot.

Louisiana.

The qualifying party documents 24 hours of training in mold remediation and basic mold assessment.

The application adds 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 mold course delivered by Internet or web.

Washington, DC.

The application fee is $300 and renewal is $105, on a two-year term.

The exam must come from DOEE's approved list; the agency's published providers have included Aerosol Monitoring & Analysis, whose listed options include a Mold Inspection & Assessment exam and a 24-Hour Mold Remediation Supervisor course.

Insurance minimums are part of the license: at least $1,000,000 in general liability, plus errors-and-omissions coverage for assessors or mold-related and pollution coverage for remediators.

The education-and-experience paths run from a high school diploma plus 3 years of experience, to an associate degree or higher with 30 semester hours in a related science plus 1 year, to a professional certification plus 6 months.

Connecticut.

From October 1, 2026, the residential path runs through home improvement contractor registration, and the certificate issues only with an attestation that the contractor is certified in mold remediation by the IICRC, NORMI or another organization the Department of Consumer Protection commissioner approves.

The work itself must follow ANSI/IICRC S520, Fourth Edition, or a successor standard the department approves.

Third-party credentials feed some licenses directly.

ACAC reports exam scores directly to state licensing agencies for state license applicants, and its CMR/CMRS handbook lists qualifying applicants for certain state licenses among its purposes.

Which exams a given state accepts is confirmed on that state's own approved list, not on the certifying body's page.

Texas and Florida set their fee, training-hour and renewal rules per credential.

Florida requires 14 hours of Department-approved continuing education per renewal for both mold license types, with a $105.00 renewal fee as listed by DBPR.

Texas sets minimum initial course lengths by credential — at least 4 hours for a remediation worker, 24 for an assessment technician and 40 for a remediation contractor or assessment consultant (16 TAC §78.68).

The full fee tables live on the states' own program pages rather than in a national table.

Where a program's numbers change — fees, refresher hours, thresholds — the change shows up on the agency page first.

A missing state mold license does not mean an unregulated job.

Where the state issues no mold license of its own, the requirements that reach a mold job come from other laws — and they still bind the crew and the company.

Contractor and home improvement licensing.

Connecticut is the sharpest example: from October 1, 2026, residential restoration and mold remediation are home improvement under Public Act 26-100, so the firm needs home improvement contractor registration — with the certification attestation described above.

The act's small-job threshold is part of the rule: the home improvement definition applies where the total price exceeds $200.

Florida draws its own boundary on the rebuild side: the state's definition of mold remediation excludes work that requires a Chapter 489 construction license unless the person holds that license or the work complies with it.

Certification mandates.

Virginia's version is a Consumer Protection Act rule: selling or offering residential mold remediation services without a mold remediation certification from a nationally or internationally recognized certifying body is a violation (Virginia Code § 59.1-200(A)(81)).

The same rule requires following the EPA mold guide, ANSI/IICRC S520 or an equivalent ANSI-accredited standard.

Virginia tried a state license first — its Mold Inspector and Remediator Regulations ran from July 1, 2011 and were repealed effective August 15, 2012 — so today's requirement is a certification, not a license.

The statute does not name a single certifying body: any nationally or internationally recognized one qualifies.

Contractor classifications.

Tennessee treats Mold Remediation as an S-Specialty/Environmental classification within its contractor licensing rules (Rule 0680-01-.16).

The classification carries people duties, not just paper: designated employees must hold the required training, and the designated employee must be on site while the work is in progress.

Pending and declared-absent programs.

Illinois's registration program is enacted but not in force until IDPH adopts rules — check the agency's page before assuming anything about Illinois jobs.

Alabama's 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, pointing instead to IICRC-certified professionals.

A declared absence like Alabama's is one state's statement about one license — contractor licensing, OSHA's standards and EPA's guidance still reach mold work there.

The federal floor.

OSHA's standards still reach mold work — the agency has no mold-specific standard, so the general standards do the work, and OSHA's own mold page points employers to them alongside the consensus standards.

EPA's remediation guide frames the professional practice as guidance.

Our research found no mold license or certification on either agency's mold pages.

For the technician, that shifts what a resume can prove.

In a state that issues no mold license, the credential line comes from voluntary certification.

One route is the IICRC's AMRT, which covers mold and sewage remediation and requires the Water Restoration Technician certification first.

Another is the IICRC's experience-based Mold Remediation Specialist, open to applicants with at least 1 year of verifiable hands-on mold remediation field experience.

Neither certificate is a state license.

Employer pages on hiring licensed mold staff are added to the board's hiring section as they publish.

This page is the parent of a state-by-state series: one page per state, plus Washington, DC.

Each state page is written from that state's own agency and statute sources.

Every page covers the same ground: whether the state runs a mold program, the agency and license tiers, training, exams, fees and renewal where they exist.

Where they do not exist, the page covers what applies instead.

The series is publishing state by state, and each state page will be linked from this article as it ships.

Until your state's page is live, check your own state's agencies directly.

New to the role itself?

The mold remediation technician hub covers the job, the PPE and the certification route — the technician's level, rather than the state's.

Career information for restoration workers and employers, not licensing, legal, insurance, health or safety advice. License programs, thresholds, fees and hours change. Confirm current requirements with the agency that runs the program — TDLR in Texas, DBPR in Florida, the Department of Labor in New York, LSLBC in Louisiana, DOEE in Washington, DC, and your own state's agencies elsewhere — before you enroll, apply, renew or hire.