# 433 W 21 St, Manhattan

What New York City's public records say about this building. Page: https://blueflo.tech/b/433-west-21-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

5 open immediately hazardous (class C) HPD violations about pests and walls, floors and stairs (Housing Maintenance Code Violations, as of 2026-10-19)

## The building

- **Year built:** 1930 (PLUTO (tax lot data), as of 2026-08-24)
- **Stories:** 11 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12)
- **Homes:** 67 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12)

## Worth knowing

- 5 open immediately hazardous (class C) HPD violations about pests and walls, floors and stairs
- Latest facade filing: safe with a repair and maintenance program
- 40 open HPD violations about building conditions

## Also on record

- 22 flood insurance claims in this census tract since 1978, 11 of them from 2012
- In the Chelsea Historic District: exterior changes need Landmarks Commission approval

## 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 Sep 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)
- Elevator periodic inspection filed within the last year (DOB NOW Elevator Safety Compliance, as of 2026-10-18)

## Building systems

- **Boiler inspection filings:** Latest accepted inspection Sep 2026, defects reported: no (DOB NOW: Safety Boiler, as of 2026-10-17)
- **Facade rating:** Safe with a repair and maintenance program (cycle 9, filed Feb 2023) (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:** Below grade (PLUTO (tax lot data), as of 2026-08-24)

## Violations and complaints

- **HPD violations:** 40 open: 40 about building conditions — walls, floors and stairs (20), leaks (6), mold (3), pests (3); 5 immediately hazardous (class C). 25 further violations from 2023–2026 were closed. 100 violations on record in all, 2019–2026 — the 65 most recent are listed here (Housing Maintenance Code Violations, as of 2026-10-19)
- **DOB violations:** 11 open: 2 about building conditions, 9 about filings or paperwork (DOB Violations, as of 2026-10-18)
- **Heat and hot water complaints:** 1 heat or hot water complaint (Housing Maintenance Code Complaints and Problems, as of 2026-10-19)
- **Resident complaints to the city:** 8 general repairs, 6 plumbing, 4 pests, 3 leaks, 3 paint or plaster, 2 appliances, 2 doors or windows, 2 heat or hot water, 2 mold, 1 electrical, 1 floors or stairs, 1 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); listed for this tax lot (1 addresses), not under this building's address (Rent Stabilized Building Lists (2024 HCR registrations), as of 2025-11-30)
- **Heat source:** Boiler burning No. 4 oil (Federal FST-100), registration current since Aug 2024 (Clean Air Tracking System (boiler registrations), as of 2026-10-19)
- **Boiler work permits:** Latest boiler work permit 2004 (DOB Permit Issuance (BIS), as of 2026-10-19)
- **Elevators:** 2 active elevators; latest periodic inspection Jul 2026 (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:** ENERGY STAR score 49 (2024 report) (Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25)

## Permits and work

- **Permit history:** 28 permits since 1990 (DOB NOW: Build – Approved Permits, as of 2026-10-17)
- **Sidewalk shed and scaffolding:** Shed permit active now (DOB NOW: Build – Approved Permits, as of 2026-10-17)
- **Landmark status:** In the Chelsea Historic District (PLUTO (tax lot data), as of 2026-08-24)

## By apartment

12 of 67 apartments named in a city record:

- Apt 2: https://blueflo.tech/b/433-west-21-street-manhattan/unit/2
- Apt 2B: https://blueflo.tech/b/433-west-21-street-manhattan/unit/2b
- Apt 4B: https://blueflo.tech/b/433-west-21-street-manhattan/unit/4b
- Apt 4C: https://blueflo.tech/b/433-west-21-street-manhattan/unit/4c
- Apt 5A: https://blueflo.tech/b/433-west-21-street-manhattan/unit/5a
- Apt 6A: https://blueflo.tech/b/433-west-21-street-manhattan/unit/6a
- Apt 6D: https://blueflo.tech/b/433-west-21-street-manhattan/unit/6d
- Apt 6E: https://blueflo.tech/b/433-west-21-street-manhattan/unit/6e
- Apt 7A: https://blueflo.tech/b/433-west-21-street-manhattan/unit/7a
- Apt 7F: https://blueflo.tech/b/433-west-21-street-manhattan/unit/7f
- Apt 9A: https://blueflo.tech/b/433-west-21-street-manhattan/unit/9a
- Apt 10A: https://blueflo.tech/b/433-west-21-street-manhattan/unit/10a

## Registered with the city

- URBAN ASSOCIATES LLC (Agent, Registration Contacts)
- 433 WEST ASSOCIATES, LCC (CorporateOwner, Registration Contacts)
- 433 WEST ASSOCIATES, (TaxLotOwner, PLUTO (tax lot data))

## More

- Every record behind this card: https://blueflo.tech/b/433-west-21-street-manhattan/records
- The same card as JSON: https://blueflo.tech/v1/buildings/433-west-21-street-manhattan
- Ask about any building from an assistant (MCP): https://blueflo.tech/mcp
- Report something wrong: https://blueflo.tech/dispute?slug=433-west-21-street-manhattan
- How to use this data: https://blueflo.tech/llms.txt