Who owns this building? Finding the owner behind an NYC LLC
How to find the real owner behind an NYC building's LLC using ACRIS deeds, HPD registrations and tax records, and how to trace their other buildings.
Updated Oct 14, 2026 · 5 min read
Ask who owns a New York City apartment building and the public record usually answers with an LLC, something like "123 Main Street Realty LLC". That name is a legal shell, and it doesn't tell you who makes decisions about the building. The person behind it is usually findable, though, because the same people show up across several city records that each disclose a different piece.
How common is the LLC wall? Of the 65,741 buildings with six or more apartments that are registered with HPD, 90% list a company as the owner rather than a person.
HPD multiple dwelling registrations matched to tax lots in CurbScoop, generated Oct 14, 2026.
The five records that name an owner
| Record | What it gives you |
|---|---|
| ACRIS deed | The legal owner (grantee) and, on the deed itself, the person who signed for the LLC. The signatory is often the principal. |
| ACRIS mortgage | The borrower, the lender, and again a signatory. Guarantors sometimes appear on related documents. |
| HPD registration | Required every year for buildings with three or more apartments. Lists the owner, a head officer for companies, and the managing agent, each with a business address. |
| DOF tax records | The owner name on the tax roll and the address the tax bill is mailed to. |
| NY Department of State | When the LLC was formed and its address for service of process. Members are not listed, but the service address often matches an owner's office. |
A method that works
- Start from the tax lot, not the address. A building can carry several addresses; the BBL catches every record filed against it.
- Pull the most recent deed in ACRIS and open the document image. Note who signed for the grantee LLC. See how to read ACRIS if the fields are new to you.
- Check the HPD registration. The head officer for a company owner is usually a real person, and the managing agent tells you who answers the phone.
- Match addresses.The tax-bill mailing address, the HPD owner address and the LLC's service address often point to the same office. That office is the owner.
- Look for the same names and addresses on other lots. This step turns one building into a portfolio, and it is where most of the value is.
From one LLC to a whole portfolio
Most NYC landlords hold each building in its own LLC, so an owner with twenty buildings appears in the records as twenty unrelated companies. They connect through what they share:
- the same deed or mortgage signatory
- the same HPD head officer or managing agent
- the same mailing or service address
- the same lender, often on the same day
Any one of these can be a coincidence. A large management company is the managing agent for thousands of unrelated owners, for example. Two or three together are strong evidence.
What the records won't tell you
Members of an LLC are not public in New York, and some owners use layers of companies on purpose. Public records will get you to the person who signs, registers and receives mail for a building, which is enough to contact the owner in most cases. They won't always reveal every investor behind a deal.
Common questions
- How do I find out who owns a building in NYC?
- Look up the tax lot in ACRIS for the latest deed, which names the owner and the person who signed for it. Then check the HPD registration (required for buildings with three or more apartments), which lists the owner, a head officer and the managing agent.
- How do I find the person behind an LLC in New York?
- LLC members are not public in New York, but the people who act for the LLC usually are: the deed and mortgage signatory in ACRIS, the head officer on the HPD registration, and the service address on file with the Department of State. When those match, you have found the owner.
- Can I see every building an NYC landlord owns?
- Not from one record, because most landlords hold each building in a separate LLC. Matching shared signatories, HPD officers and mailing addresses across tax lots reconstructs most portfolios.