HPD Mold Violations in NYC: What Building Owners Need to Know
By Robert Weitz, RTK Environmental
If you’ve received an Housing Preservation & Development (HPD) mold violation in New York City, you are on the clock. Mold violations are treated as serious indoor allergen hazards under Local Law 55 and leaving them open can expose you to escalating penalties, tenant complaints, and costly repairs down the road.
Exposure to mold can trigger respiratory problems, allergies, eye, nose and throat irritation, fatigue, and even neurological issues, and HPD expects owners to correct these conditions quickly. When you act fast, you protect your tenants, protect your building, and reduce your legal and financial risk.
Here’s what you need to know.
What Is an HPD Mold Violation?
An HPD mold violation is issued when mold is identified in a residential building. Once issued, the landlord is required to address the condition within a specific timeframe.
Under HPD mold laws:
- Local Law 55, which applies to buildings with three or more apartments and multiple dwellings, requires landlords to have annual inspections of all units and common areas for indoor allergen hazards.
- If mold is found, landlords must remediate the mold within 21-30 days of receiving a violation, depending on the class of the violation. Classes depend on the size of the area affected by mold, with larger areas of mold (e.g., 10–29 square feet, 30+ square feet) triggering higher‑class violations and mandatory licensed professionals.
- Landlords must ensure their buildings are free from conditions that promote mold growth, such as excess moisture or leaks.
- Landlords must provide tenants with a notice explaining their rights and responsibilities regarding mold.
- Landlords must post information about mold in common areas.
- Landlords must hire a licensed mold assessor to conduct a visual inspection and air sampling if mold is identified or suspected.
- The mold assessor must be licensed by the New York State Department of Labor and follow industry standards.
- It is illegal in New York to hire the same company to perform testing and remediation on the same job due to conflict of interest.
These requirements are mandatory. Failure to comply can leave violations open and create additional legal and financial exposure.
Why Are HPD Mold Violations a Headache for Landlords and Property Owners?
Aside from the compromised health of tenants, by ignoring HPD mold violations, you risk potential penalties, ongoing fines for open violations, tenant lawsuits, or impact on refinancing, sales, or benefit compliance.
HPD mold violations are not just a paperwork issue—they carry real financial risk. For Class C “immediately hazardous” conditions like significant mold, civil penalties for buildings with more than five units can range from roughly $150 to $1,200 per violation, plus daily fines that can reach up to $1,200 per day if the condition is not corrected on time.
Over the course of a few weeks, an open violation can easily add up to thousands of dollars in penalties, on top of remediation and legal costs.
Here’s an example of how RTK can help. A 20‑unit building in Brooklyn received a Class B violation for 15-square-feet of mold.
By hiring RTK as their independent assessor, the owner cleared the violation in under 30 days and avoided ongoing penalties, saving thousands of dollars in penalties and fines.
Why Mold Violations Are a Health Concern
Mold thrives in moist environments. When indoor humidity rises above safe levels, conditions become ideal for mold, mildew, bacteria, and dust mites.
High indoor humidity can cause:
- Mold and mildew growth
- Musty odors
- Condensation on windows and walls
- Peeling paint or wallpaper
- Wood rot and structural damage
Humidity levels should generally be maintained between 30 percent and 45 percent. Anything higher than 45 percent increases the risk of mold and bacteria growth through condensation and duct contamination.
Why Independent Mold Testing Matters
HPD requires landlords to hire a licensed mold assessor if mold is identified or suspected. That assessor must be licensed by the New York State Department of Labor and follow industry standards.
It is illegal to use the same company for both mold testing and mold remediation on the same project in New York. This separation prevents conflicts of interest and protects both tenants and building owners.
As an independent environmental testing company, RTK does not perform remediation. We conduct inspections and testing, provide clear documentation, and outline what needs to be addressed so remediation can proceed properly.
How to Ensure Your Property Is Compliant
If you manage residential property in New York City, here are practical steps:
- Schedule required annual mold inspections
- Address leaks, condensation, and moisture sources immediately
- Keep humidity levels between 30 percent and 45 percent
- Hire a licensed mold assessor if mold is suspected
- Keep testing and remediation separate
Fast action protects tenants, protects your property, and helps you clear violations efficiently.
Clearing an HPD Mold Violation
RTK Environmental has extensive experience helping building owners resolve HPD mold violations. RTK’s independent reports help you demonstrate compliance to HPD, close the violation, and protect your building from ongoing penalties and tenant claims.
We offer:
- Fast scheduling
- Licensed, highly trained inspectors
- Comprehensive reports
- Expedited laboratory results
- Clear counsel and next steps
Why work with RTK Environmental?
- Independent testing – we never remediate
- Extensive experience with HPD violations
- Reports crafted to support Certification of Correction
- Fast scheduling for owners on a deadline
If you’ve received an HPD mold violation, schedule an independent mold inspection with RTK Environmental Group now, before your correction deadline runs out.
Call 800.392.6468 so you have clear, defensible documentation ready for HPD. RTK’s independent reports help you demonstrate compliance to HPD, close the violation, and protect your building from ongoing penalties and tenant claims.
