Investors would never buy a stock without reading the filings. Yet every year, hundreds of thousands of New Yorkers commit tens of thousands of dollars to a lease after a 15-minute walkthrough and a glance at the kitchen. For many New York households, rent is one of the largest recurring expenses, often consuming 30% or more of household income, and a lease locks that money in for twelve to twenty-four months.
The good news is that New York City publishes an unusual amount of data about its buildings. Violations, complaints, registrations and rent-regulation status are all public record. Free tools like Weverit pull these records into a single report for any address, so a renter can run the same kind of due diligence an analyst would run on a company before putting money in.
Here is what to look at, and what it means for your wallet.
The Department of Housing Preservation and Development (HPD) inspects buildings and issues violations in three classes. Class A is non-hazardous, Class B is hazardous, and Class C is immediately hazardous. Class C covers things like missing heat or hot water, lead-paint hazards and broken window guards.
A few older Class A violations are generally less serious than unresolved Class B or C conditions. What matters is their age, their status and whether similar problems keep recurring. A long list of open Class B and C violations, especially recent ones, suggests an owner who defers maintenance. For a tenant, deferred maintenance becomes a real cost: space heaters in January, ruined belongings after a leak, days off work waiting for repairs that don’t come.
Look at the trend as well as the total. A building that is clearing violations is moving in the right direction. A building where they keep piling up is not.
Violations only appear after an inspector confirms a problem. Complaints to 311 capture what tenants report in real time: heat outages, pests, noise, water leaks. A cluster of heat complaints every winter tells you more about your future comfort and utility costs than any listing photo.
HPD requires annual registration of every multiple dwelling with three or more residential units, as well as certain one- and two-family homes. The registration names the owner and a managing agent with a contact address. A building that should be registered but isn’t is a compliance issue worth investigating, much like a company that stops filing its reports. It can also make it harder for a tenant to reach someone accountable when something breaks.
HPD property registration is separate from New York State rent-stabilization registration, which is handled by New York State Homes and Community Renewal (HCR).
Roughly a million New York City apartments are rent-stabilized. In those units, rent increases on renewal are capped by the Rent Guidelines Board, and tenants have a right to a renewal lease. That changes the long-term math considerably.
In a market-rate unit, increases are not set by the Rent Guidelines Board. However, some market-rate apartments are covered by New York’s Good Cause Eviction Law, which can limit certain rent increases and nonrenewals. Coverage depends on the landlord, the building and the apartment, so renters should check whether the law applies before signing.
Renters can request a unit’s registered rent history from HCR. If an apartment should be stabilized but is being rented at market rate, the history can reveal it.
Several upfront costs that used to be negotiable are now set by law:
Security deposit: limited to one month’s rent under the Housing Stability and Tenant Protection Act of 2019.
Application fee: a landlord generally cannot charge a separate application-processing fee. Background and credit-check charges are limited to the actual cost or $20 in total, whichever is less. The fee must be waived if the applicant provides a qualifying report from the previous 30 days.
Broker fee: under the FARE Act, which took effect in June 2025, a broker hired by the landlord can no longer pass the fee on to the tenant. In the past that fee often reached up to 15% of a year’s rent.
Knowing these rules before you hand over a check is the simplest return on research a renter will ever get.
In buildings covered by New York City’s lead-paint law, a child under six who routinely spends at least 10 hours a week in the apartment triggers additional landlord obligations, including an annual visual investigation for potential lead-paint hazards. Pre-1960 buildings are subject to a lead-paint presumption, with separate rules for certain buildings constructed between 1960 and 1978. For families, the age of the building is not a detail. It decides what the owner owes you and what risks to ask about before signing.
Renters applying through the city’s affordable housing lottery face a separate set of rules. Income bands, household size and, for some programs, limits on savings and other assets all apply. Many applicants are rejected not on income but on assets they didn’t know counted. Before applying, it is worth understanding how asset limits in NYC Housing Connect are calculated, and which accounts are included or excluded.
A lease is a contract with a counterparty, and the counterparty’s track record is public. Half an hour with the records can save months of cold showers, a security deposit fight or an overpaid broker fee. In a city where rent is the biggest line in most household budgets, that is due diligence worth doing.