Building record from city data · MANHATTAN, NY

850 Amsterdam Ave

Printed 2026-10-20 from blueflo.tech/b/850-amsterdam-avenue-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 1931 · 20 stories · 120 apartments · BIN 1056510 · BBL 1018730031

Worth knowing
6 heat or hot water complaints filed with the city last winter
Source: Housing Maintenance Code Complaints and Problems · as of 2026-10-20
Worth knowing
Also on record
Clean in the records
Registered with the city

BLDG MANAGEMENT CO., INC., BLDG AMSTERDAM LLC

Heat or hot water: 11 reports to the city since 2024
More reports than 9 in 10 similar-size buildings on the Upper West Side
2024Heat or hot water · Jan 2024 · 2 reports (7 complaints)Jan 5, 2024Jan 8, 2024Jan 12, 2024Jan 24, 2024Jan 30, 2024Jan 30, 2024 (2nd)Jan 31, 2024Heat or hot water · Feb 2024 · 2 reports (6 complaints)Feb 10, 2024Feb 14, 2024Feb 21, 2024Feb 22, 2024Feb 24, 2024Feb 28, 2024Heat or hot water · Mar 2024 · 1 report (3 complaints)Mar 20, 2024Mar 21, 2024Mar 23, 2024Heat or hot water · Apr 2024 · 1 report (1 complaint)Apr 4, 2024Heat or hot water · Oct 2024 · 1 report (2 complaints)Oct 15, 2024Oct 15, 2024 (2nd)Heat or hot water · Dec 2024 · 1 report (1 complaint)Dec 1, 2024
2025Heat or hot water · Jan 2025 · 1 report (1 complaint)Jan 8, 2025Heat or hot water · Dec 2025 · 1 report (3 complaints)Dec 3, 2025Dec 7, 2025Dec 8, 2025
2026Heat or hot water · Jan 2026 · 1 report (1 complaint)Jan 25, 2026
Source: HPD Complaints and Problems · as of 2026-10-20

Also reported

2024 – 2026

A filled month had a report to HPD; darker means more than one, and the past year is brightest. Tap one to read it. Complaints within a week count as one report. Records list complaints filed, not conditions found.

Apartments named in these records

9 of this building’s 120 apartments are 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.

Structure and facade

Issues on record
Facade rating

Safe with a repair and maintenance program (cycle 9, filed Feb 2024)

DOB NOW: Safety – Facades Compliance Filings, as of 2026-10-19 · See the facade filings at DOB →
What this counts

Most recent facade (FISP) filing in the latest 5-year cycle

  • Sidewalk shed and scaffoldingfoundNo active shed permit; permits since Jul 2019, last expired Jan 2021
  • Landmark statusno recordNot in a historic district on record

Heat and hot water

Issues on record · 6 complaints, 2024–2026 · 4 in the past year
Heat source

Boiler burning natural gas (Best 5C-125), registration current since Jun 2024

Clean Air Tracking System (boiler registrations), as of 2026-10-20 · See this building's boiler registrations on NYC Open Data →
Boiler inspection filings

Latest accepted inspection May 2026, defects reported: no

DOB NOW: Safety Boiler, as of 2026-10-19 · See the boiler filings at DOB →
What this counts

Accepted annual boiler inspection filings, any date

Boiler work permits

Latest boiler work permit 2014

DOB Permit Issuance (BIS), as of 2026-10-19
What this counts

DOB boiler permits (BIS and DOB NOW); a permit dates work, not the boiler's age

Heat and hot water complaints

6 heat or hot water complaints

Housing Maintenance Code Complaints and Problems, as of 2026-10-20 · See the complaints at HPD Online →
What this counts

HPD complaints, heat season 2025–26 (Oct 1–May 31)

Water and pipes

2 complaints, 2024–2025
Water service line

Non-Lead (records)

Lead Service Line Location Coordinates, as of 2026-01-30

Pests and cleanliness

2 complaints, 2025–2026 · 1 in the past year

Electrical

2 complaints, 2025–2026 · 1 in the past year

Flooding

No issues on record
FEMA flood zone

Outside FEMA's 1% annual-chance flood zone: X

FEMA National Flood Hazard Layer, as of 2026-10-20
What this counts

Effective FIRM zones touching the building footprint

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
What this counts

Mapped ponding touching the building footprint

BasementWhole tax lot

Below grade

PLUTO (tax lot data), as of 2026-08-24

Elevators

Issues on record, most recently 2023
Elevators

2 active elevators; latest periodic inspection Sep 2026

DOB NOW Elevator Safety Compliance, as of 2026-10-19 · See this building's elevators on NYC Open Data →
What this counts

Active elevator devices registered to this building ID

Rent and tenancy

On the state list
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
What this counts

The list doesn't say which apartments are stabilized, and being listed isn't proof of current status. For a specific apartment, request its rent history from HCR

Energy

Energy

ENERGY STAR score 93 (2024 report)

Energy and Water Data Disclosure (Local Law 84), as of 2025-11-25
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

DOB violations

3 open: 1 about building conditions, 2 about filings or paperwork

DOB Violations, as of 2026-10-19 · Read these violations in full at DOB →
What this counts

Open DOB, ECB and DOB NOW Safety violations, any date, one per violation. ECB class 1 = hazardous, class 2 = major

Permit history

24 permits since 1990

DOB NOW: Build – Approved Permits, as of 2026-10-19 · See every permit at DOB →
What this counts

DOB permits issued (DOB NOW and legacy BIS), one per job and work type; excludes sheds

  • HPD violationsfound0 open. 1 further violation from 2024 was closed. 66 violations on record in all, 2014–2024 — the 1 most recent are listed here

Nothing on record

Gasno record
  • Gas pipingno recordNo open gas piping filing violations. Inspection results themselves are not published

Sources

23 datasets

Each date is when we last checked that dataset, not when the record itself was created.