How to Check NYC Building Violations Before Signing a Lease (or Buying)

Every NYC apartment listing looks the same: stainless appliances, a rooftop, maybe an in-unit washer-dryer. What the listing never tells you is whether the building has 18 open violations, $40,000 in unpaid OATH fines, or a façade-safety order from the Department of Buildings. That information is public — every NYC agency posts it on Open Data — but it's scattered across five city portals and written in code-section shorthand designed for inspectors, not residents.

This guide walks through every public-record check we'd run before signing a NYC lease or making an offer on an apartment, plus the red flags worth walking away over. Most of it is free. The whole flow takes under 10 minutes once you know where to look.

Why building-record checks matter (especially in NYC)

Two NYC quirks make public-record diligence higher-leverage than in most cities:

• Liabilities transfer with title. When you buy a NYC condo or co-op share, unpaid OATH judgments and active HPD violations don't disappear — they stay attached to the lot. A $20,000 unpaid balance you didn't know about becomes your problem at closing.
• Open violations block your renovation permits.DOB will not approve a new construction filing on a lot that has an active critical safety order. Buyers planning to renovate need a clean record before the architect even shows up.

Renters care for different reasons: an HPD-class-C heat or hot-water violation is a hazard that the city has already documented, and a landlord who's accumulated a dozen of them is statistically a landlord who fights repair requests.

The three agencies you actually need to check

Of the dozen NYC departments that regulate buildings, three produce the violations that show up on a property record:

DOB — Department of Buildings

DOB issues construction and life-safety violations. Think: construction-without-permit, illegal alterations, façade not maintained per Local Law 11, sidewalk shed signage missing, elevator inspection overdue. DOB violations are graded Class 1 (immediate hazard), Class 2 (major), or Class 3 (minor). A Class 1 on a lot almost always means a renovation freeze until cured.

HPD — Housing Preservation & Development

HPD issues housing-condition violations: heat, hot water, leaks, mold, lead-paint, peeling paint in common areas, vermin. Tiered Class A (non-hazardous), Class B (hazardous), Class C (immediately hazardous). A Class C heat-or-hot-water violation in winter is a signal the landlord has been ignoring tenants for at least a few weeks before HPD got involved.

OATH — Office of Administrative Trials and Hearings

OATH is the city court that adjudicates DOB / HPD / FDNY / Sanitation summonses. It's also where the unpaid fines that transfer with title typically sit — once a summons goes to OATH and the landlord doesn't respond, it becomes a judgment, and the judgment attaches to the lot until paid. OATH balances are the line item most likely to surprise a buyer at closing.

How to check building violations for free

You have three options, ranked by effort:

Option 1 — Use NYC Property Audit (3-5 seconds)

Type the address (or 10-digit BBL) on nycpropertyaudit.com. The free preview pulls every open and resolved DOB / HPD / OATH item, plus an At-a-Glance summary of unpaid fines, flood zone, and a peace score for the precinct. No signup, no card, no rate limit.

Sample reports to skim before you run your own: 200 Avenue A (a typical East Village walk-up, 2 open items), 1075 Grand Concourse (a 108-unit Bronx art-deco co-op with 208 open items — what a chronic-non-compliance building looks like), and 30-78 Steinway Street (a 2-unit Queens mixed-use building with $15K in unpaid OATH fines — small property, transferring-with-title problem).

The Pro report ($14.99 one-time) adds violation-by-violation detail — the actual code section, fine amount, lifecycle status, and a deduplicated 10-year history with annual filings (e.g. bedbug reports) collapsed into a single row.

Option 2 — Hit each city portal yourself

DOB has the Buildings Information System (BIS) and a newer DOB NOW portal. HPD has HPDONLINE for housing-condition violations. OATH has its own ECB Search for adjudicated judgments. You'll need the property's BBL or building number for most lookups; the formats differ between portals. Allow 20-30 minutes for a complete check, more if the building has a long history.

Option 3 — Pay a real-estate attorney

For a high-stakes purchase, an attorney's title-search package will cover everything we've discussed plus a lien search and chain-of-title review. Expect $400-$1,200 depending on complexity. This is the right call before signing a contract of sale; not the right call before a $4,000-a-month rental.

The red flags that should make you walk away

Not every open violation is a deal-breaker. A 100-year-old elevator building will almost always have an open Local-Law-11 item somewhere in its cycle. Here's the threshold we use:

• Critical DOB safety order on file. Vacate orders, partial vacates, full stop-work orders. If the seller didn't mention it, that's the conversation.
• OATH balance over $5,000. Most clean buildings have $0-$500 in routine sidewalk-shed signage fines. Five figures means the landlord has been dodging summonses for a while.
• 3+ open Class-C HPD violations in a single unit.For renters, this means the unit you're considering has documented heat / leak / pest problems the landlord hasn't fixed. Class C is the city's "fix immediately" tier — multiple open ones tells you about responsiveness.
• Lead-paint disclosure missing on a pre-1978 building with kids in the unit. Federal Title X requires disclosure; absence is a regulatory risk and often a sign of an inattentive owner.
• Annual bedbug filing with active 24-month reports. Every NYC building over 10 units files an annual bedbug disclosure with DOHMH. A clean filing is routine; an active "Reported (Verified)" entry within 24 months is a red flag for renters who haven't seen the neighbors yet.

What public-record checks DON'T tell you

There's a class of building issues that never makes it to a city record:

• Internal repair history. If a landlord fixes a leak before HPD inspects, there's no record. A clean HPD report doesn't certify a leak-free building.
• Co-op board policy. NYC co-op boards can reject buyers for income or pet reasons not visible on PLUTO. Get the actual financials and house rules from your buyer's attorney.
• Neighbor disputes. Noise, odor, and tenant- tenant conflicts go to 311 — which we surface in the neighborhood section of the Pro report — but the picture is always partial.

10-minute pre-lease / pre-offer checklist

The flow we'd run on any NYC address before a serious next step:

1. Search the address on NYC Property Audit; note the open-violations and unpaid-fines tiles.
2. Scan the Compliance section. Anything Class C, Class 1, or flagged "Critical" is your headline.
3. Check the Financial Picture for sales pattern (frequent flipping = institutional landlord), unpaid OATH balance, and mortgage records.
4. Look at the Property Systems section for elevator status, heating type, and Energy STAR. An elevator building with no recent inspection log is a red flag.
5. Read the Neighborhood & Safety analyst notes. Peace score plus offense mix tells you what walking the block won't.
6. Save or download the Free PDF preview to share with whoever else is on the lease / making the offer with you.
7. For a purchase, escalate to a real-estate attorney with the report findings as your starting point. They'll add lien and title searches.

Quick FAQ

How often is the data refreshed?

Building violations, housing conditions, and OATH judgments refresh daily. Sales and mortgages refresh weekly via ACRIS. Crime data refreshes monthly. Energy benchmarking and bedbug filings refresh annually per their NYC Local Law cadence.

Does this work outside Manhattan?

Yes — every borough is supported. We pull from city-wide datasets (PLUTO, DOB, HPD, OATH, ACRIS) so a Maspeth single- family, a Bronx walk-up, and a Manhattan supertall all generate the same report.

Can I check a unit-specific BBL for a condo?

Yes. Enter the apartment / unit number in the optional field on the search box — when one exists in PLUTO, we look up the unit-specific BBL. For condos, the unit BBL is required to see unit-specific tax and ownership data.

Bottom line

Spending 10 minutes on public-record checks before signing a NYC lease or putting in an offer is the single highest-ROI thing a prospective resident can do. The data is free. The aggregation is the problem — and that's what NYC Property Audit fixes.

Try it on the address you're considering: run a free audit →