# 520 W 24 St, Manhattan What New York City's public records say about this building. Page: https://blueflo.tech/b/520-west-24-street-manhattan > These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. Also known as 522 W 24 St, 524 W 24 St, 527 W 23 St, 530 W 24 St, 532 W 24 St, 533 W 23 St, 535 W 23 St, 537 W 23 St, 537 W 23 St, 539 W 23 St: one building, several doors, and this card covers all of them. ## In one line In a FEMA AE flood zone (FEMA National Flood Hazard Layer, as of 2026-10-19) ## The building - **Year built:** 2001 (PLUTO (tax lot data), as of 2026-08-24) - **Stories:** 14 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) - **Homes:** 313 (Buildings Subject to HPD Jurisdiction, as of 2026-08-12) ## Worth knowing - In a FEMA AE flood zone - City stormwater map shows deep flooding (1 ft+) at this building in a moderate storm today - Basement on record, and the city's stormwater map shows flooding here in at least one storm scenario - Latest facade filing: safe with a repair and maintenance program ## Also on record - 73 flood insurance claims in this census tract since 1978, 51 of them from 2012 - City stormwater map shows deep and contiguous flooding at this building in the Extreme storm, 2080 sea levels scenario ## Clean in the records - Water service line on record as non-lead (field inspection) (Lead Service Line Location Coordinates, as of 2026-01-30) - Boiler inspection filed Apr 2026 with no defects reported (DOB NOW: Safety Boiler, as of 2026-10-17) - Elevator periodic inspection filed within the last year (DOB NOW Elevator Safety Compliance, as of 2026-10-18) - No heat or hot water complaints filed last winter (Housing Maintenance Code Complaints and Problems, as of 2026-10-19) ## Building systems - **Boiler inspection filings:** Latest accepted inspection Apr 2026, defects reported: no (DOB NOW: Safety Boiler, as of 2026-10-17) - **Facade rating:** Safe with a repair and maintenance program (cycle 10, filed Nov 2025) (DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-18) - **Water service line:** Non-Lead (field inspection) (Lead Service Line Location Coordinates, as of 2026-01-30) - **FEMA flood zone:** In a FEMA special flood hazard area: AE, X (0.2% annual chance) (FEMA National Flood Hazard Layer, as of 2026-10-19) - **Stormwater flooding:** Extreme storm, 2080 sea levels: Deep and contiguous flooding (1 ft+); Moderate storm, 2050 sea levels: Deep and contiguous flooding (1 ft+); Moderate storm, today's sea levels: Deep and contiguous flooding (1 ft+); 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:** 4 open: 4 about building conditions — walls, floors and stairs (2), doors and windows (1), mold (1). Also 3 older records from 2015 never closed. 17 violations on record in all, 2014–2026 — the 7 most recent are listed here (Housing Maintenance Code Violations, as of 2026-10-19) - **DOB violations:** 4 open: 4 about filings or paperwork (DOB Violations, as of 2026-10-18) - **Heat and hot water complaints:** 0 heat or hot water complaints (Housing Maintenance Code Complaints and Problems, as of 2026-10-19) - **Resident complaints to the city:** 1 doors or windows, 1 mold, 1 paint or plaster (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. Listed under the 421-a tax program, so stabilization can end when the exemption does (Rent Stabilized Building Lists (2024 HCR registrations), as of 2025-11-30) - **Heat source:** Boiler burning natural gas (Cleaver Brooks CB-400-300-015), registration current since Jul 2024 (Clean Air Tracking System (boiler registrations), as of 2026-10-19) - **Boiler work permits:** Latest boiler work permit 2002 (DOB Permit Issuance (BIS), as of 2026-10-19) - **Elevators:** 4 active elevators; latest periodic inspection Aug 2026 (DOB NOW Elevator Safety Compliance, as of 2026-10-18) - **Gas piping:** No open gas piping filing violations. Inspection results themselves are not published (DOB Safety Violations, as of 2026-10-18) - **Energy:** ENERGY STAR score 46 (2024 report) (Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25) ## Permits and work - **Permit history:** 107 permits since 1990 (DOB NOW: Build – Approved Permits, as of 2026-10-17) - **Sidewalk shed and scaffolding:** No active shed permit; permits since Mar 2019, last expired Nov 2019 (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 2 of 313 apartments named in a city record: - Apt 6F: https://blueflo.tech/b/520-west-24-street-manhattan/unit/6f - Apt S6F: https://blueflo.tech/b/520-west-24-street-manhattan/unit/s6f ## Registered with the city - RELATED MANAGEMENT COMPANY,, L.P. (Agent, Registration Contacts) - 23RD CHELSEA ASSOCIATES LLC (CorporateOwner, Registration Contacts) - 23RD CHELSEA ASSOCIATES, (TaxLotOwner, PLUTO (tax lot data)) ## More - Every record behind this card: https://blueflo.tech/b/520-west-24-street-manhattan/records - The same card as JSON: https://blueflo.tech/v1/buildings/520-west-24-street-manhattan - Ask about any building from an assistant (MCP): https://blueflo.tech/mcp - Report something wrong: https://blueflo.tech/dispute?slug=520-west-24-street-manhattan - How to use this data: https://blueflo.tech/llms.txt