# 504 W 126 St, Manhattan

What New York City's public records say about this building. Page: https://blueflo.tech/b/504-west-126-street-manhattan

> These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked.

## In one line

42 open immediately hazardous (class C) HPD violations about pests and fire safety and heat or hot water and mold (Housing Maintenance Code Violations, as of 2026-10-19)

## The building

- **Year built:** 1901 (PLUTO (tax lot data), as of 2026-08-24)
- **Stories:** 5 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12)
- **Homes:** 18 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12)

## Worth knowing

- 42 open immediately hazardous (class C) HPD violations about pests and fire safety and heat or hot water and mold
- 1 hazardous (class 1) building code violation from 2025 is still open
- 32 heat or hot water complaints filed with the city last winter
- 2 open major (class 2) building code violations from 2023–2025
- 127 open HPD violations about building conditions

## Also on record

- On the state's list of buildings with rent-stabilized apartments (2024 registrations)

## Clean in the records

- Water service line on record as non-lead (records) (Lead Service Line Location Coordinates, as of 2026-01-30)
- Boiler inspection filed Jul 2026 with no defects reported (DOB NOW: Safety Boiler, as of 2026-10-17)
- Outside FEMA's 1% annual-chance flood zone; no mapped stormwater flooding (FEMA National Flood Hazard Layer, as of 2026-10-19)

## Building systems

- **Boiler inspection filings:** Latest accepted inspection Jul 2026, defects reported: no (DOB NOW: Safety Boiler, as of 2026-10-17)
- **Facade rating:** Not required: facade inspections apply only to buildings taller than 6 stories (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-18)
- **Water service line:** Non-Lead (records) (Lead Service Line Location Coordinates, as of 2026-01-30)
- **FEMA flood zone:** Outside FEMA's 1% annual-chance flood zone: X (FEMA National Flood Hazard Layer, as of 2026-10-19)
- **Stormwater flooding:** Extreme storm, 2080 sea levels: Not in mapped flooding; Moderate storm, 2050 sea levels: Not in mapped flooding; Moderate storm, today's sea levels: Not in mapped flooding; Limited storm, today's sea levels: Not loaded (file format unreadable) (NYC Stormwater Flood Maps, as of 2024-07-03)
- **Basement:** No basement (PLUTO (tax lot data), as of 2026-08-24)

## Violations and complaints

- **HPD violations:** 127 open: 127 about building conditions — pests (28), walls, floors and stairs (18), mold (16), doors and windows (15); 42 immediately hazardous (class C). Also 3 older records from 2012–2015 never closed. 25 further violations from 2025–2026 were closed. 399 violations on record in all, 2012–2026 — the 179 most recent are listed here (Housing Maintenance Code Violations, as of 2026-10-19)
- **DOB violations:** 6 open: 3 about building conditions, 2 about filings or paperwork, 1 older than 10 years (DOB Violations, as of 2026-10-18)
- **Heat and hot water complaints:** 32 heat or hot water complaints (Housing Maintenance Code Complaints and Problems, as of 2026-10-19)
- **Resident complaints to the city:** 77 heat or hot water, 13 general repairs, 12 mold, 11 electrical, 10 pests, 9 paint or plaster, 9 plumbing, 6 appliances, 5 doors or windows, 5 leaks, 4 safety, 3 floors or stairs, 3 outside the building, 3 unsanitary conditions (Housing Maintenance Code Complaints and Problems, as of 2026-10-19)

## More systems

- **Rent stabilization:** On the state's list of buildings with at least one rent-stabilized apartment (2024 registrations) (Rent Stabilized Building Lists (2024 HCR registrations), as of 2025-11-30)
- **Heat source:** Boiler burning natural gas (Laars MT2H-0400), registration expired since Nov 2020 (Clean Air Tracking System (boiler registrations), as of 2026-10-19)
- **Boiler work permits:** Latest boiler work permit 2022 (7 on record) (DOB Permit Issuance (BIS), as of 2026-10-19)
- **Elevators:** No elevators registered to this building (DOB NOW Elevator Safety Compliance, as of 2026-10-18)
- **Gas piping:** Open violation for not filing the periodic gas piping inspection (2025) (DOB Safety Violations, as of 2026-10-18)
- **Energy:** Not required: energy reporting applies to buildings over 25,000 sq ft (Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25)

## Permits and work

- **Permit history:** 11 permits since 1990 (DOB NOW: Build – Approved Permits, as of 2026-10-17)
- **Sidewalk shed and scaffolding:** No active shed permit; permits since Sep 2020, last expired May 2021 (DOB NOW: Build – Approved Permits, as of 2026-10-17)
- **Landmark status:** Not in a historic district on record (PLUTO (tax lot data), as of 2026-08-24)

## By apartment

15 of 18 apartments named in a city record:

- Apt 1B: https://blueflo.tech/b/504-west-126-street-manhattan/unit/1b
- Apt 1C: https://blueflo.tech/b/504-west-126-street-manhattan/unit/1c
- Apt 2A: https://blueflo.tech/b/504-west-126-street-manhattan/unit/2a
- Apt 2B: https://blueflo.tech/b/504-west-126-street-manhattan/unit/2b
- Apt 2C: https://blueflo.tech/b/504-west-126-street-manhattan/unit/2c
- Apt 2D: https://blueflo.tech/b/504-west-126-street-manhattan/unit/2d
- Apt 3A: https://blueflo.tech/b/504-west-126-street-manhattan/unit/3a
- Apt 3C: https://blueflo.tech/b/504-west-126-street-manhattan/unit/3c
- Apt 4A: https://blueflo.tech/b/504-west-126-street-manhattan/unit/4a
- Apt 4B: https://blueflo.tech/b/504-west-126-street-manhattan/unit/4b
- Apt 4C: https://blueflo.tech/b/504-west-126-street-manhattan/unit/4c
- Apt 4D: https://blueflo.tech/b/504-west-126-street-manhattan/unit/4d
- Apt 5A: https://blueflo.tech/b/504-west-126-street-manhattan/unit/5a
- Apt 5B: https://blueflo.tech/b/504-west-126-street-manhattan/unit/5b
- Apt 5D: https://blueflo.tech/b/504-west-126-street-manhattan/unit/5d

## Registered with the city

- Smartkey Property Management LLC (Agent, Registration Contacts)
- DENDUR/GENESIS II HOUSING DEVELOPMENT (CorporateOwner, Registration Contacts)
- DENDUR/GENESIS II HOUSING DEVELOPMENT ET C. (TaxLotOwner, PLUTO (tax lot data))

## More

- Every record behind this card: https://blueflo.tech/b/504-west-126-street-manhattan/records
- The same card as JSON: https://blueflo.tech/v1/buildings/504-west-126-street-manhattan
- Ask about any building from an assistant (MCP): https://blueflo.tech/mcp
- Report something wrong: https://blueflo.tech/dispute?slug=504-west-126-street-manhattan
- How to use this data: https://blueflo.tech/llms.txt