Quick answer
An HPD mold violation in New York City is classed by size: under 10 square feet is Class A with 90 days to correct, 10 to 30 square feet is Class B with 60 days, and 30 square feet or more is Class C with 24 hours. Correcting it means fixing the moisture source, removing the mold and documenting both.
Updated September 2026
What HPD expects you to fix
HPD mold violations typically direct the owner to trace and repair the source as well as remove the mold. That matters: painting over growth, or cleaning it without stopping the leak, gets you the same violation at the next inspection. We start where the water starts, whether that is a riser, a roof drain, a window or the apartment above, and coordinate with your plumber or roofer when the repair is theirs.
Then the growth comes out using the practices the city lays out: limiting dust, HEPA vacuuming at the point of work, cleaning with detergent and water, and removing what cannot be cleaned. You get photos, readings and a written description of the work.
Class A, B and C mold violations
The class sets the deadline, not the method. A Class A patch under 10 square feet still needs the leak found and the mold removed properly, just with 90 days to do it. Class B covers 10 to 30 square feet in a room and allows 60 days. Class C, at 30 square feet or more, is treated as immediately hazardous and has to be corrected within 24 hours, which is where after-hours response matters. Have the violation number ready when you call so we plan to the right deadline.
Local Law 55 inspection findings
Owners of buildings with three or more apartments have to inspect every unit each year for mold and other allergen hazards, and those inspections often find growth before a tenant ever calls 311. Finding it yourself, before HPD writes it up, is the better position to be in. We can work through the units on your list, take the ones with active leaks first, and keep the documentation consistent from apartment to apartment so your records show what was found and what was done.
Buildings with 10 or more units
In a building with 10 or more units, mold over 10 square feet is not a job for the super with a spray bottle. City rules require the assessment and the removal to be done by two independent companies, with the assessor writing the plan and checking the result. We handle the removal side, follow the written plan, and coordinate access and scheduling with management so tenants are not left waiting between the assessor visits and ours, and every unit gets the same paperwork.
What drives the cost of a violation job
National guides put a typical mold remediation at $1,223 to $3,757 and bathroom jobs at $500 to $1,000. Violation work adds documentation and scheduling, so we price after reading the violation and seeing the unit.
Square footage
The class follows size, and so does the work.
Where the water starts
A riser or roof repair can involve another trade and another unit.
Materials that come out
Drywall, plaster, cabinets or flooring add removal and rebuild.
Deadline
Class C within 24 hours means after-hours scheduling.
Number of units
Several apartments on one list can be scheduled together.
What the documentation covers
- Before photos of every affected area, labeled by room
- Moisture readings at the source and around the growth
- Where the water came from and who repaired it
- Square footage of mold removed in each room
- The work practices used: containment, HEPA, cleaning
- After photos once the area is clean and dry
- Final readings showing the area is dry
- A written summary for your correction paperwork
New York conditions
Why mold complaints keep landing on owners
Enforcement here is active. Local Law 55 requires owners of buildings with three or more apartments to inspect units each year for mold and fix the underlying cause, and HPD completed 56,198 inspections in fiscal year 2022 in response to indoor allergen complaints, most of them reported through 311. In older walk-ups and elevator buildings across New York City, the source is often a shared riser or roof drain rather than the unit named on the violation, so the repair plan starts with tracing the water.
What the super can handle, and what needs a crew
What you can safely do
- In buildings under 10 units, small patches cleaned with detergent and water using the city work practices
- Stopping an active leak and drying the area the same day
- Photographing the area and keeping the tenant informed
Where it needs us
- Mold over 10 square feet in a building of 10 or more units
- Growth inside walls, ceilings or ducts where material has to come out
- Class C violations that need containment within 24 hours
- Jobs where the source is still unknown
How we clear a violation
Tell us the violation number and deadline when you call.
We read the violation
Class, location and deadline decide the order of work.
We trace the water
Risers, roof drains, windows and the unit above come first.
We protect the tenant
Containment, covered belongings and a clean path through the unit.
We remove the mold
HEPA vacuuming, detergent cleaning, and removal of what cannot be cleaned.
We dry and verify
Meter readings confirm the area is dry before anything closes.
We hand over the file
Photos, readings and a written summary for your correction.
Call (332) 234-9326A person answers, day or night.
Questions about hpd mold violation remediation
Because mold cleaned off a wet surface grows back, and the violation returns with it.
No. Paint does not correct mold, and the growth usually shows through again.
Under Local Law 55 the building owner is responsible for the mold and the condition behind it.
Yes. Send the list and deadlines and we schedule by class and severity.
We trace it, coordinate access through management, and remove mold in both units if needed.
The owner or agent files it. We provide the photos, readings and work description behind it.
Related jobs we handle
New Construction Mold Remediation
Mold on framing and sheathing removed before the walls close.
Commercial Mold Remediation
After-hours containment so tenants and customers keep using the building.
Apartment Mold Remediation
Occupied-building work with hallway protection and paperwork for the board.
Restaurant Mold Remediation
Walk-ins, basement prep rooms and dish areas cleaned between services.
Violation posted and a deadline running?
Call now with the violation number. We answer 24/7 and start with the water.
Answered 24 hours a day, 7 days a week