Your NYC Landlord Won’t Fix Mold – Here’s What the Law Says You Can Do

We get calls like this every week. A tenant on Post Avenue notices dark spots spreading across the bathroom ceiling. They tell the super. The super says he’ll look at it. Three weeks pass. The spots get bigger. The musty smell moves into the bedroom. A kid starts coughing. Another call to the super, another round of nothing.

If this sounds familiar, you’re far from the only one. There are currently 725 open HPD mold violations in Inwood (ZIP 10034), 544 of them Class B. Our Inwood mold data report breaks down complaints and violations by year.

This is the most common mold situation in Inwood – not a homeowner dealing with a burst pipe, but a renter in a six-story pre-war walk-up whose landlord is doing the math on whether ignoring the problem is cheaper than fixing it.

The answer to that math problem, under New York law, is supposed to be no. Here’s what the law actually says, and what you can do when your landlord is betting you don’t know it.

Is my NYC landlord legally required to fix mold in my apartment?

Yes – and specifically in Inwood’s building stock, the law is unambiguous. Under NYC Local Law 55 of 2018 (the Asthma-Free Housing Act), landlords in buildings with three or more units must proactively inspect every apartment for mold and pests at least once a year. Not just respond to complaints – inspect proactively. Visible mold is a Class B hazardous condition under HPD’s violation classification system, with roughly a 30-day window to correct it. If it’s severe enough to be classified Class C (immediately hazardous), the window shrinks to 21 days.

Fines for ignoring HPD violations can reach $10,000. The law also requires landlords to give tenants the DOHMH Indoor Allergens fact sheet at lease signing and renewal – something most Inwood landlords quietly skip.

The underlying principle goes back to NYS Labor Law Article 32, which covers any mold project larger than 10 square feet. At that size, the work must be done by a licensed mold remediation contractor – not by a handyman with a bucket of bleach, and not by the building super with a can of Kilz. If your landlord’s “fix” is to paint over it, that’s not a legal remedy. It’s a cover-up, and it will fail.

What to do when your landlord ignores a mold complaint – step by step

The process matters. Done right, it creates a paper trail that protects you legally and puts real pressure on your landlord. Done wrong – a few verbal complaints, no documentation – it leaves you with nothing to show a judge or housing inspector.

Step 1 – Document before you do anything else

Take dated photos and video of every affected area. Don’t just photograph the obvious spots – get the corners, the area around window frames, the ceiling near the bathroom exhaust, behind the radiator. If there’s a musty smell, note it in writing with a date. If anyone in the household has symptoms – coughing, congestion, worsening asthma – start a written log with dates.

In Inwood’s older buildings, mold almost always extends further than what’s visible on the surface. Document what you can see, but note in writing that you believe there may be hidden moisture damage – because there usually is, especially in buildings from the 1920s with original plumbing.

Step 2 – Notify your landlord in writing

Send a written notice to your landlord or management company describing the mold – its location, approximate size, how long it’s been there, and a request for repair within a reasonable timeframe (14 days is standard). Send it by email so you have a timestamp, and follow up with a letter if the property is managed by a company with a physical office.

Keep copies of everything. If your building is managed by one of the larger property management companies operating on Broadway or Dyckman, certified mail with return receipt gives you proof of delivery they can’t later deny.

Step 3 – File a 311 complaint

Call 311 or go to nyc.gov/311 and file a mold/moisture complaint for your specific address and apartment. HPD will schedule an inspection – typically within a few days for a mold complaint, faster if you describe symptoms or vulnerable household members (children, elderly, anyone with asthma).

Get the complaint number and save it. You can track the status at hpdonline.hpdnyc.org. When the inspector comes, be there. Point out every affected area you’ve documented – HPD inspectors issue violations only for what they see, and they don’t open walls. If you believe the mold extends behind drywall or under flooring, say so explicitly.

One important thing to understand: HPD inspectors issue violations for visible mold only. They don’t test for mold type or measure how far it extends. That independent assessment – air sampling, surface scrapings sent to a lab – is a separate service from an environmental expert, and it’s what turns “I see mold” into documented evidence with real legal weight.

Step 4 – If the landlord still doesn’t act, file an HP Action

An HP Action is a proceeding you file in the Housing Part of NYC Civil Court to compel your landlord to make repairs. It’s free to file. You don’t need a lawyer, though Legal Aid and tenant legal clinics in Upper Manhattan can help you prepare.

The court at 111 Centre Street in Manhattan handles Manhattan HP Actions. When you file, a judge can order your landlord to complete repairs by a specific date and impose sanctions – including contempt of court – if they ignore the order. An existing HPD violation on your apartment strengthens the case significantly, which is exactly why the 311 step comes first.

For NYCHA tenants at Dyckman Houses or other public housing in the neighborhood, the process is different – HPD doesn’t inspect NYCHA units directly. The HP Action in Housing Court is generally the only route that compels inspection and repair in a NYCHA apartment. See our NYCHA mold guide for the specific pathway.

Why Inwood landlords get away with it – and why they don’t have to

Roughly 92% of Inwood residents rent, most in pre-war buildings with aging infrastructure and – in a lot of cases – landlords who’ve owned these buildings for decades and know that most tenants won’t push back past a verbal complaint. The buildings east of Broadway along Payson Avenue, Seaman Avenue, and the Dyckman corridor are particularly prone to this: long-term rent-stabilized tenants, deferred maintenance, and management that treats a coat of paint as a repair.

The mold problem in these buildings is rarely the tenant’s fault. It’s cast-iron waste stacks that haven’t been fully replaced since they were installed. It’s copper supply risers sweating through every winter because the pipe chase was never insulated. It’s the building’s concrete foundation that took on water during Sandy (2012) and Ida (September 2021), and was never professionally dried – just pumped out and left.

When a landlord tells you the mold is happening because you cook too much, or because you take hot showers, or because you’re not opening windows – that’s not impossible, but it’s almost never the complete story in a 1920s masonry building. An independent assessment will tell you what the moisture source actually is. And if it’s the building’s infrastructure, that information belongs in writing before any remediation starts.

My landlord says it’s condensation, not mold – what now?

This is one of the most common deflections in older NYC rentals. Condensation and mold can look identical to the untrained eye – dark spots on walls, ceiling staining, discoloration around window frames. The difference is whether it returns after cleaning. Condensation wipes away and stays gone. Mold comes back within days because it’s rooted into the material beneath the surface.

If your landlord or their super is telling you it’s condensation, that’s a determination they’re not qualified to make. Under NYS law, figuring out what a suspicious growth actually is – and how far it extends – requires an independent licensed mold assessor with lab testing, not a visual opinion from someone who has a financial interest in it being nothing. If they’re wrong and it is mold, the longer it goes untreated the more extensive (and expensive) the remediation becomes. Document the deflection in writing and proceed with 311.

See our full guide: Is it mold or condensation? What to do when management says it’s nothing.

Can I withhold rent if my landlord won’t fix the mold?

Rent withholding is technically a legal option in New York under the warranty of habitability, but it carries real risk if you do it without legal guidance. You need to have given written notice, documented the condition, and be prepared for your landlord to initiate eviction proceedings – which you’d then defend by proving the habitability breach.

Most tenant advocates in Upper Manhattan recommend the HP Action route first. It gets you a court order requiring repair, creates a legal record, and doesn’t expose you to eviction risk the way rent withholding does. If you want to explore rent withholding, talk to a tenant legal clinic before doing it – not after.

For a detailed breakdown of the rent withholding process and its risks: Can I withhold rent for mold in NYC?

How we fit into this – and when to call us

We’re not a legal service and we’re not a tenant advocacy organization. What we do is the environmental documentation side – the part that turns a complaint into evidence.

If you’ve filed a 311 complaint and want to know what’s actually behind that wall before the inspector comes, we can assess it. If you’re building a Housing Court case and need a written assessment of the moisture source and mold extent – the kind of documentation that carries weight with a judge – that’s what an independent mold assessment produces. If your landlord is proposing a remediation scope that seems too cheap or too fast for what you’re seeing, we can tell you whether it sounds right.

We know these buildings. The pre-war walk-ups on Payson, on Seaman, on Post Avenue, on the Dyckman corridor – we’ve been in their basements and wall cavities. We know what a legitimate mold job looks like in a 1920s masonry building, and we know what a whitewash looks like. If you want a second opinion on what your landlord is telling you, that’s a free phone call.

Call (917) 694-9003. We’ll tell you honestly whether what you’re describing sounds like a professional remediation job or something a good super with the right materials could handle.