Printed 2026-10-20 from blueflo.tech/b/520-west-23-street-manhattan, where it is kept current. These are city records, not an inspection by Blueflo. Every item shows its source and the date it was last checked. Not a warranty. May not be used for tenant screening (terms of use).
built 2003 · 15 stories · 107 apartments · BIN 1012335 · BBL 1006940042
- In a FEMA AE flood zone
- Basement on record, and the city's stormwater map shows flooding here in at least one storm scenario
- 73 flood insurance claims in this census tract since 1978, 51 of them from 2012
- City stormwater map shows this building reached by future high tide in the Extreme storm, 2080 sea levels scenario
- Water service line on record as non-lead (records)
- Boiler inspection filed May 2026 with no defects reported
- Facade filed as safe (Apr 2026)
- Elevator periodic inspection filed within the last year
- No open HPD violations about building conditions from the last 10 years
- No heat or hot water complaints filed last winter
AKAM ASSOCIATES, INC., 520 West 23rd Street Corporation, OLD POST MANDE 23RD STREET LLC
Apartments named in these records
1 of this building’s 107 apartments is named in a city record. The rest have no record naming them, which is the usual case.
These are city records about an apartment, not about anyone who lives or lived there. They may not be used to screen a tenant.
Flooding
Issues on recordIn a FEMA special flood hazard area: AE, X (0.2% annual chance)
What this counts
Effective FIRM zones touching the building footprint
Extreme storm, 2080 sea levels: Reached by future high tide (sea level rise, with no storm); 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)
What this counts
Mapped ponding touching the building footprint
- BasementfoundNo basement
Heat and hot water
No issues on recordBoiler burning No. 2 oil (Weil Mclain 988), registration current since Dec 2025
Latest accepted inspection May 2026, defects reported: no
What this counts
Accepted annual boiler inspection filings, any date
Latest boiler work permit 2002 (2 on record)
What this counts
DOB boiler permits (BIS and DOB NOW); a permit dates work, not the boiler's age
- Heat and hot water complaintsfound0 heat or hot water complaints
Water and pipes
No issues on recordNon-Lead (records)
Fire and safety
2 resolved since 2024Structure and facade
No issues on recordSafe (cycle 10, filed Apr 2026)
What this counts
Most recent facade (FISP) filing in the latest 5-year cycle
- Sidewalk shed and scaffoldingfoundNo active shed permit; permits since Mar 2017, last expired Feb 2023
- Landmark statusno recordNot in a historic district on record
Elevators
Issues on record, most recently 20232 active elevators; latest periodic inspection Jan 2026
What this counts
Active elevator devices registered to this building ID
Energy
ENERGY STAR score 77 (2024 report)
What this counts
Letter grades are issued by the city under Local Law 33 and posted near the building entrance; Blueflo shows the reported score only
General condition and all records
2 open: 2 about filings or paperwork
What this counts
Open DOB, ECB and DOB NOW Safety violations, any date, one per violation. ECB class 1 = hazardous, class 2 = major
34 permits since 1990
What this counts
DOB permits issued (DOB NOW and legacy BIS), one per job and work type; excludes sheds
- HPD violationsfound0 open. 3 further violations from 2023–2024 were closed
- Resident complaints to the cityfoundno complaints. None in the last 2 years, but 1 earlier complaint on record from 2024
Nothing on record
- Rent stabilizationno recordNot on the state's 2024 list. Owners who register late or not at all are missing, so ask HCR about a specific apartment
- Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published
Sources
23 datasetsFEMA
- FEMA National Flood Hazard Layer2026-10-19
- OpenFEMA NFIP Redacted Claims (v3)2026-09-09
NYC DCP
- NYC GeoSearch (address directory)2026-10-19
- PLUTO (tax lot data)2026-08-24
NYC DEP
NYC DEP / Mayor's Office
- NYC Stormwater Flood Maps2024-07-03
NYC DOB
- DOB NOW Elevator Safety Compliance2026-10-18
- DOB NOW: Build – Approved Permits2026-10-17
- DOB NOW: Safety Boiler2026-10-17
- DOB NOW: Safety – Facades Compliance Filings2026-10-18
- DOB Permit Issuance (BIS)2026-10-19
- DOB Safety Violations2026-10-18
- DOB Violations2026-10-18
NYC DOB / Mayor's Office
NYC HPD
- Buildings Subject to HPD Jurisdiction2026-08-12
- Housing Maintenance Code Complaints and Problems2026-10-19
- Housing Maintenance Code Violations2026-10-19
- Multiple Dwelling Registrations2026-08-12
- Registration Contacts2026-08-12
NYC OTI
- AddressPoint2026-07-07
- Building Footprints2026-10-11
NYC Rent Guidelines Board / NYS HCR
Each date is when we last checked that dataset, not when the record itself was created.