521 West 111th Street

521 West 111th Street in Morningside Heights, Manhattan, has 34 open HPD violations, and 31 of 40 units are rent-stabilized, as of Oct 25, 2026. StreetSpy grade: C (70/100).

Multi-family elevator · 40 units · Built 1904

StreetSpy grade: C (Fair, 70/100)

• 34 open housing violations, none in the most serious class.
• 1 eviction carried out by marshals in the last 3 years.
• The head officer on this registration is named on 141 buildings' registrations; 10 graded D or F.
• 31 of 40 units are rent-stabilized; 14 on the 2007 tax bill.

More open violations per unit than 6 in 10 Manhattan buildings this size.

• Repairs: Medium (34 open), records as of Oct 25, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: Clear (Owner reported none, 3 yr), records as of Oct 27, 2026
• Safety: Clear (No open DOB violations), records as of Oct 23, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

34 open violations: 0 class C (immediately hazardous), 23 class B, 11 class A. 1 issued in the last 12 months. 44 on record. Oldest open violation issued 2001-08-27. Newest violation issued 2026-04-29.

0 closed in the last 90 days. Median 84 days from issue to close for the 2 violations closed in the last 12 months.

• Class B: Mold, ceiling, 6th room from the north, 1st floor. HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... AT CEILING 1SQ.FT.; SOUTH WALL 1SQ.FT. AND WEST WALL 1SQ.FT. IN THE 6th ROOM FROM NORTH AT EAST LOCATED AT APT 5, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 15619308 ISSUED 19-DEC-22 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE §27-2017.3a(3)(a) or (b). (apt 5), issued 2023-04-19. HPD violation 15935611
• Class B: Mold, south wall, 6th room from the north, 1st floor. HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... AT SOUTH WALL 1SQ.FT.; EAST WALL 1S.Q.FT. AND CEILING 1SQ.FT. IN THE 6th ROOM FROM NORTH AT WEST LOCATED AT APT 5, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 15619306 ISSUED 19-DEC-22 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE §27-2017.3a(3)(a) or (b). (apt 5), issued 2023-04-19. HPD violation 15935610
• Class B: Damaged plaster or paint, 1st floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE EAST WALL IN THE PRIVATE HALLWAY LOCATED AT APT 5, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH (apt 5), issued 2022-12-20. HPD violation 15619310
• Class B: Fire escape defect. , 2007 ADM CODE AND DEPT. RULES AND REGULATIONS. REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES CONSISTING OF AIR CONDITIONER IN 2ND FIRE ESCAPE WINDOW FROM WEST AT SOUTH, 2ND STY BALCONY, CENTER STACK, BUILDING FRONT AT FIRE ESCAPE, issued 2018-04-26. HPD violation 12351339
• Class B: Missing or broken smoke / CO detector, throughout the apartment, 1st floor. REPAIR OR REPLACE THE SMOKE DETECTOR DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 5, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH , SECTION AT EAST (apt 5), issued 2011-10-21. HPD violation 9155449
• Class B: Missing or broken smoke / CO detector, throughout the apartment, 1st floor. SECTION 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. IN THE ENTIRE APARTMENT LOCATED AT APT 5, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH , SECTION AT EAST (apt 5), issued 2011-10-21. HPD violation 9155437
• Class B: Damaged plaster or paint, 1st floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR ALL WALLS AND CEILING IN THE PRIVATE HALLWAY LOCATED AT APT 5, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH , SECTION AT EAST (apt 5), issued 2011-10-21. HPD violation 9155423
• Class B: Mold, ceiling, 6th room from the north, 1st floor. SECTION 27-2005 HMC:TRACE AND REPAIR THE SOURCE AND ABATE THE NUISANCE CONSISTING OF MOLD ... AT CEILING, EAST AND SOUTH WALLS IN THE 6th ROOM FROM NORTH AT WEST LOCATED AT APT 5, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH , SECTION AT EAST (apt 5), issued 2011-10-21. HPD violation 9155417

311 housing complaints

0 in the last 12 months, 6 in 5 years.

Bedbugs

The owner reported 0 infested units in the last 3 years of filings. HPD's bedbug filings are self-reported by the owner once a year; HPD does not inspect to confirm them.

• 2026: No bedbug filing on record for this year
• 2025: No bedbug filing on record for this year
• 2024: Owner reported 0 infested units
• 2023: No bedbug filing on record for this year
• 2022: Owner reported 0 infested units
• 2021: Owner reported 0 infested units

Buildings department (DOB)

No open DOB violations. 3 DOB violations on record. Check on DOB BIS.

Evictions and housing court

1 executed evictions in the last 3 years (1 on record). 0 open HPD cases; 0 harassment findings.

Rent stabilization

31 of 40 units rent-stabilized as of 2024. Stabilized renewals: 0% for one year and 0% for two years under RGB Order #58 (Oct 1, 2026 to Sep 30, 2027).

Rent-stabilized units on city tax bills: 31 in 2024, 14 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.

Owner and management

Owner: TRUSTEES OF COLUMBIA UNIVERSITY. Head officer: DAVID GREENBERG. Managing agent: DIEGO RIVERA. This owner has 141 buildings on record, 10 graded D or F. See the full portfolio.

Last HPD registration Jan 15, 2026. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 1018830018, HPD building ID 37893. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Cathedral Pkwy (110 St) (1), 3 min walk
• 116 St-Columbia University (1), 5 min walk
• 103 St (1), 8 min walk

How the grade is calculated

Sources: NYC HPD Housing Maintenance Code Violations, NYC 311 Service Requests, NYC HPD Bedbug Reporting, NYC Marshal Evictions (DOI), NYC HPD Housing Litigations, NYC DOB Violations, NYC DOF tax bills (via JustFix Who Owns What portfolio API, v2), NYC HPD Property Registration. Methodology. Report generated 2026-10-27.