509 West 121 Street
Manhattan · 10027 · BBL 1019760020
509 West 121 Street is a multi-family elevator building in Harlem, Manhattan, ZIP 10027. City records date it to 1911 and count 110 residential units. The city's property file lists the owner of record as Teachers College Columbia Univerity. Its most recent total assessed value is $5.9M.
What the eviction record shows
City marshals executed 1 eviction at 509 West 121 Street in the record PulseCities holds, the most recent on May 22, 2025. Holding the marshal docket number or the court index number from one of these? Look up that case →
Rent stabilization at this address
No DHCR rent-stabilization registration is on file for 509 West 121 Street in the years PulseCities holds. Absence is not proof: an owner who stops registering leaves the same gap as a building that never had stabilized units. Checking your own apartment starts with the free rent history. How to check rent-stabilized status →
Building permits
| Work | Filed | Type |
|---|---|---|
| SHDINSTALLATION OF HEAVY DUTY SIDEWALK SHED AND PIPE SCAFFOLDING. NO CHANGE IN USE, | Oct 15, 2025 | AL |
| GCAPPLICATION FILED HEREWITH FOR FACADE RESTORATION WORK AS SHOWN ON PLANS SUBMITT | Oct 9, 2025 | AL |
| SCFInstallation of suspended scaffold for facade work and/or inspection. Amend #2, | Oct 9, 2025 | AL |
DOB job filings on this lot, past 12 months. Source: NYC DOB job filings, current through August 26, 2026.
311 housing complaints
5 complaints in the past 12 months
NYC 311 housing and building complaints logged for this address. Source: NYC 311, current through August 26, 2026.
How 509 West 121 Street compares in 10027
PulseCities tracks 2,842 lots in 10027, of which 155 carry an executed eviction from the marshal record, which starts in April 2024, and 136 carry a deed from the shorter ACRIS window. This building is in that second group, which is 5.5% of the ZIP. 10027 scores 36.8 out of 100 for displacement pressure, 54 of 177 scored NYC ZIP codes. The full signal breakdown for Harlem →
Watch 509 West 121 Street
Get an email when a deed, eviction, permit or violation is filed on this building. Only when something lands, and never more than once a day
Questions about 509 West 121 Street
Who owns 509 West 121 Street?
The most recent deed on file for 509 West 121 Street names Teachers College Columbia Univerity. Deeds record the party that took title, which is often a holding company rather than the operator managing the building.
Has 509 West 121 Street changed hands recently?
No deed for 509 West 121 Street appears in the ACRIS records PulseCities holds. That means no transfer has been published for this lot in the current window, not that the building has never been sold.
Have there been evictions at 509 West 121 Street?
Yes. One marshal-executed eviction at 509 West 121 Street appears in the NYC evictions dataset, the most recent on May 22, 2025. The dataset covers executed evictions only, so it undercounts housing court activity: cases that settle or end in a move-out never reach a marshal.
Is 509 West 121 Street rent stabilized?
No DHCR registration for 509 West 121 Street appears in the years PulseCities holds. That is a gap in the registration record rather than an answer about any apartment, and the free rent history from NYS Homes and Community Renewal is what settles it.
What is the displacement risk around 509 West 121 Street?
10027 (Harlem) scores 36.8 out of 100 on the PulseCities displacement index. The score reads five ZIP-level signals: eviction rate, LLC acquisition rate, permit intensity, assessment spikes, and 311 complaint volume. It describes the area around the building, not the building itself.
Sourced from NYC public records: ACRIS deeds, DOB permits, the NYC evictions dataset, and 311. Records reflect what agencies have published and can lag events.