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NY State Lic. #24-6A4P4-SHMONY State License #24-6A4P4-SHMO Is the Legal Authorization for This Work
Work plan submitted before we start. Independent post-clearance testing confirms it is done.
Legal standing
Mold Remediation in New York State Requires a Licence. Ours Is #24-6A4P4-SHMO.
Mold remediation in New York State requires a licence. Ours is #24-6A4P4-SHMO.
Mold Water Remediation Corp holds NY State Mold Remediation Contractor License #24-6A4P4-SHMO. It was issued July 2, 2024, by the Division of Safety and Health in Albany. That licence covers mold remediation on areas exceeding 10 square feet — the legal threshold set by New York State law.
Under Article 32 of NY State Labor Law, administered by the NY State Department of Labor mold program, mold remediation cannot be legally performed on qualifying jobs without this credential. The licence number appears on every work plan this company submits. Our legal standing is verifiable before a single wall is opened.
Article 32 also separates the roles. The company that assesses a mold problem cannot be the company that remediates it on the same project, and the post-remediation clearance assessment must be performed by an independent licensed assessor. We are the remediation contractor. The assessor is someone else, by law and by design.
This page explains what licensed mold remediation actually involves — the work plan, the containment, the removal, and the independent post-clearance air test that confirms it is done.
Inside the cavity
How Mold Grows Inside NYC Wall Cavities Before It’s Visible on Any Surface
In NYC apartment buildings, mold is almost always further along than it looks.
The paper facing on drywall is cellulose. It is food. When a pipe joint leaks slowly inside a wall cavity for three weeks, that paper absorbs the moisture and mold begins colonizing from the inside out.
By the time a resident sees dark staining on a surface, the colony has typically been growing behind the wall for weeks — sometimes longer. It grows inside wall cavities and spreads along the paper facing of drywall. It moves through ceiling assemblies where condensation collects. Buildings with mechanical ventilation serving multiple units can move airborne spores through shared systems into adjacent spaces.
Our dispatch base at 1419 Coney Island Ave sits two miles from the Flatbush Avenue corridor — one of Brooklyn’s densest concentrations of pre-war multi-family rental buildings. HPD mold violations are filed in those buildings routinely, often because a slow interior moisture event was not caught until the colony reached a wall surface. What residents see is the edge of the problem, not its full extent.
Where the moisture source itself is still unidentified, the first step is moisture detection and leak tracking rather than removal.
- Drywall paper facing is cellulose — the colony feeds on it from the cavity side
- Ceiling assemblies collect condensation and hold it out of sight
- Shared mechanical ventilation can move spores between units
From the field
The Work Plan Comes Before the Crew — Here’s What It Covers
“NY State law requires a written mold work plan before licensed remediation begins. We prepare one for every job.
I am Haim Lavi, founder and CEO of Mold Water Remediation. I have been doing this work in New York City since 2016. A mold work plan is a written document specifying the scope of affected materials, containment design, remediation methods, and post-clearance testing requirements. It eliminates ambiguity before the crew arrives.
Here is what ours covers. First, we document the affected area in square footage, material type, and location. Second, we specify the containment design — which barriers go up, where negative air pressure is established, and how the work zone is isolated from occupied areas. Third, we identify which materials come out and to what boundary. Fourth, we state the post-clearance testing protocol: who conducts it, what they are sampling for, and what threshold must be met before containment comes down.
Licence number #24-6A4P4-SHMO is attached to every work plan we submit. The property owner has a verifiable record of our legal standing before any surface is disturbed. In an HPD violation resolution — the process of satisfying an open notice of violation for mold through licensed remediation and documented post-clearance testing — that documentation matters.
Where the affected area is large or the building has ten or more units, the assessment that defines this scope is written by an independent licensed assessor before we price anything. That is the sequence Article 32 sets out, and HPD’s adopted indoor allergen hazard rules describe the work practices owners are held to alongside it.
Independent verification
Every Remediation Job Ends With Independent Post-Clearance Air Testing
Post-clearance testing is not optional when a licensed contractor does the work — it is required.
Post-clearance testing is air sampling conducted by an independent mold assessor after remediation is complete. It confirms that airborne spore levels have returned to acceptable conditions before containment is removed and occupants re-enter.
The key word is independent. The assessor is not us. That separation is written into Article 32 for a reason: an independent air sample is objective confirmation that the remediation scope was correct, the containment held, and the space is safe. A contractor testing its own work has an obvious interest in the result.
Containment stays up until the post-clearance results support removing it. The test result becomes part of the job documentation — available for HPD submission, insurance review, or lease dispute purposes after the job closes.
The documentation package
- Work plan
- Scope, containment design, methods, testing protocol
- Licence
- #24-6A4P4-SHMO attached to the plan
- Moisture map
- The readings that set the removal boundary
- Disposal record
- Materials double-bagged, labelled, handled to NY State requirements
- Clearance
- Independent assessor’s passing air sample
- Use
- Formatted for HPD submission and insurer review
Two standards
IICRC S520 and NYC DEP Guidelines: The Two-Standard Compliance Framework
Every licensed mold remediation job in New York City runs under two sets of standards simultaneously.
Work plan on file
Written and on file before any work begins, with the licence number attached and the removal boundary defined by moisture data rather than visual estimate.
Containment
Physical barriers and negative air pressure systems installed before material removal starts, so disturbed spores move toward filtration rather than into adjacent rooms.
Removal under filtration
HEPA air filtration running continuously during active work. Contaminated materials removed to the confirmed boundary, then double-bagged, labelled and staged for disposal under NY State waste handling requirements.
Independent clearance
Air sampling by a separate licensed mold assessor. Spore counts inside the remediated area must be at or below outdoor baseline and within the acceptable threshold before containment comes down.
An open HPD mold violation does not close itself.
Call 212-432-5803
Execution
From Containment Setup to Verified Clearance: The Licensed Remediation Sequence
The remediation sequence runs in one direction. Each phase must be complete before the next begins.
Before containment goes up, we conduct a full moisture assessment of the affected area. Thermal imaging identifies temperature differentials indicating moisture presence. Calibrated moisture meters confirm readings by material type. The result is a moisture map that defines where contamination ends and unaffected material begins — the boundary used in the work plan.
Containment barriers then isolate the work zone. Negative air pressure is established so any disturbed spores move toward filtration rather than into adjacent rooms. HEPA air scrubbers run throughout removal. Contaminated materials — drywall, insulation, wood framing, ceiling tile — are removed to the boundary the moisture data established. Removed materials are double-bagged, labelled, and staged for disposal. Unaffected structural materials are not touched. The physical removal work itself is covered in detail on its own page.
When removal is complete and the work zone has been cleaned and treated, we notify the independent mold assessor. They conduct air sampling inside and outside the former containment zone. If the test passes, containment comes down. If it does not, we address what the test identified before clearance is issued. The passing result is added to the job file.
Coverage
Licensed Mold Remediation Serving All Five NYC Boroughs
We cover all five NYC boroughs from our Brooklyn dispatch location.
Pre-war brownstones
Park Slope and Carroll Gardens — plaster-and-lath assemblies over original subfloors.
Mid-century rentals
South Bronx and East Flatbush, where slow interior leaks go unreported.
High-rise co-ops
Upper West Side buildings with shared risers running the full height.
Industrial conversions
Long Island City lofts where building systems predate current occupancy.
Basement apartments
Below-grade units running elevated humidity for months at a time.
Commercial spaces
Multi-tenant properties where containment must work around trading hours.
If you are in New York City and you have a qualifying mold condition, we reach you.
Get started
Your HPD Violation Has a Clear Resolution Path — Start Here
Licensed remediation with a written work plan and post-clearance documentation closes HPD mold violations.
212-432-5803Or email contact@moldwaterremediation.com. We will review the situation, prepare a written work plan under licence #24-6A4P4-SHMO, perform the remediation, and coordinate independent post-clearance air testing.
Have this ready when you call
That tells us the likely scope and whether an independent assessment is already in hand.
- Your borough
- Your building type
- What you have observed
- Whether an assessment or HPD violation already exists
FAQ
Questions Owners and Boards Ask Before Licensed Remediation
Why can’t you do the inspection and the remediation?
Article 32 of NY State Labor Law prohibits the same company from performing both assessment and remediation on the same project, and it requires an independent assessment to define the remediation scope. The separation exists to remove the incentive to overstate a problem in order to sell a larger job. We are the licensed remediation contractor; the assessor is independent of us.
What is the 10 square foot threshold about?
It is the point at which New York State requires a licensed contractor for the work. Below it, remediation is not a licensed activity. Our licence, #24-6A4P4-SHMO, covers work above that threshold, and the licence number appears on every work plan we submit so your legal standing is verifiable before anything is opened.
Who performs the post-clearance test, and what happens if it fails?
An independent licensed mold assessor, never us. They sample air inside and outside the former containment zone, and counts inside must be at or below the outdoor baseline. If the test does not pass, containment stays up and we address what the sample identified before clearance is issued. The passing result goes into the job file.
Will this close my HPD violation?
Licensed remediation performed under a written work plan and supported by documented post-clearance testing is what closure requires. Painting over damage or drying a surface without addressing the cavity behind it does not close anything. Our documentation package is formatted for HPD submission.
Do we have to leave the apartment during the work?
Often not. Containment isolates the work zone and negative air pressure keeps disturbed spores moving toward filtration rather than into the rest of the unit. Whether occupants stay depends on the size of the affected area, its location, and how long containment has to remain up — we tell you before work starts, not during.
What happens to the material that comes out?
It is double-bagged, labelled and disposed of under New York State waste handling requirements, not placed in a building dumpster. You receive the disposal record as part of the job close-out, which matters when a violation or a lease dispute has to be closed on paper as well as in the building.
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