1,035 recorded events, 1900–2026, from 22 city data systems. The city's paper trail here is mostly 360 HPD complaints, 265 311 service requests, 83 ACRIS deeds & mortgages.
Full record, year by year Support this site
The city's published records show little recorded distress here in the last three years. More recorded distress than 57% of 100+-unit residential buildings citywide. The citywide median for 100+-unit residential buildings is 3.7 penalty points per 10 units; this building carries 5.2. In ZIP 10025, 70% of residential buildings hold an A and 2% grade D or F. How grades work
Among 4,677 100+-unit residential buildings citywide · left is less recorded distress, right is more
No current HPD flags in the latest weekly snapshot: no open violations, no pending litigation, no active vacate orders, and not in the Alternative Enforcement Program.
58 heat or hot-water complaints in the last three years (winter 2023–24: 38 · winter 2024–25: 8 · winter 2025–26: 12). Repeated winter clusters suggest a chronic heating problem.
No bedbug-infested units reported in the last three years of filings.
$800 in enforcement penalties imposed (ECB/OATH) in the last three years.
68 service requests in the last three years. Most common: HEAT/HOT WATER (29) · Noise (7) · PAINT/PLASTER (4) · Illegal Parking (4) · PLUMBING (3) · UNSANITARY CONDITION (3).
$161,180 in permitted construction work filed since 2016 (2 filings with a declared cost) — a rough measure of how actively the owner maintains the building. Permit costs cover filed construction work only — they do not capture routine maintenance or repairs done without a permit.
| Yes | Built before 1974 (1931) |
| Yes | Six or more residential units (119) |
| No | 421-a / J-51 tax benefit on the current tax roll |
2 of 3 signals present. This is the classic profile of a rent-stabilized building (pre-1974, 6+ units) — many units in such buildings remain stabilized. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).
| Registered owner(s) | BLDG AMSTERDAM LLC |
| Head officer | CHRISTOPHER ORPHEUS |
| Managing agent | BLDG MANAGEMENT CO., INC. |
| Last registered | 2025-08-24 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $14,924,000 | $6,715,800 |
| 2026 | $15,948,000 | $7,176,600 |
| 2027 | $16,535,000 | $7,440,750 |
The city's market estimate has risen 11% between tax years 2025 and 2027.
| Energy grade (LL33) | B — ENERGY STAR score 77/100 (2022 disclosure cycle) |
| Heating fuel | NATURALGAS |
| Facade (Local Law 11) | SWARMP — "Safe With A Repair and Maintenance Program": known facade conditions that must be repaired (cycle 9) |
Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).
Not in a hurricane evacuation zone.
Not in the city's stormwater (cloudburst) flood maps under any modeled scenario.
No street-flooding or sewer-backup complaints on record at this address.
Sources: FEMA flood maps (coastal), NYC DEP Stormwater Flood Maps (cloudburst), NYC hurricane evacuation zones, and 311 records for this address.
| Subway | 103 St — 1 · 550 ft straight-line (about a 3-minute walk) · station accessibility: none 96 St — 1 2 3 · 0.3 mi straight-line (about an 8-minute walk) · station accessibility: full |
| Bus | Nearest boarding stop: Amsterdam Av / W 102 St — M7 M11 · 250 ft |
| Citi Bike | W 100 St & Broadway · 650 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 075 Emily Dickinson. Confirm with the DOE's school search. |
Distances are straight-line, not walking routes. Transit locations from the MTA and Citi Bike, bike facilities from NYC DOT, school zones from the DOE's 2024–25 maps.
850 Amsterdam Avenue
| Heat or hot water | Heat or hot water |
| Apartment maintenance | Apartment maintenance |
| Bed bugs | Bed bugs |
| Residential pests | Residential pests |
| Rats or mice | Rats or mice |
| Anything else | Anything else |
68 311 service requests from this address in the last three years — 29 of them about heat or hot water.
311 will ask for the address, the apartment if the problem is inside, and what's wrong. Contact details are optional for most complaints; food-poisoning reports can be anonymous. Complaints appear in the city's public 311 data, usually within a day or two, and then in the Live from 311 box on this page.
Managed by BLDG MANAGEMENT CO., INC. — 76 buildings, 5,436 units. Grades across the portfolio: A58 · B14 · C2. See the whole portfolio
showing 60 of 76 buildings
Most recent mortgage recorded against this lot: $770,593 on 2020-05-15 (lender: Capital One, National Association). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2024-01-31 | RPTT&RET $22,500,000 — from BLDG ASSOCIATES, INC.; GOLDMAN, DORIAN S; GOLDMAN, KATJA B; GOLDMAN, LLOYD to BLDG HOLDINGS II LLC | $22,500,000 | |
| 2020-05-15 | AL&R $11,000,000 — from BLDG AMSTERDAM LLC to CAPITAL ONE, NATIONAL ASSOCIATION | $11,000,000 | |
| 2020-05-15 | Agreement $11,000,000 — from BLDG AMSTERDAM LLC to CAPITAL ONE, NATIONAL ASSOCIATION | $11,000,000 | |
| 2020-05-15 | Mortgage $770,594 — from BLDG AMSTERDAM LLC to CAPITAL ONE, NATIONAL ASSOCIATION | $770,594 | |
| 2013-05-10 | Agreement $12,000,000 — from PARTNERSHIP 91, L.P. to CAPITAL ONE, NATIONAL ASSOCIATION | $12,000,000 | |
| 2013-05-10 | Mortgage $4,461,327 — from PARTNERSHIP 91, L.P. to CAPITAL ONE, NATIONAL ASSOCIATION | $4,461,327 | |
| 2013-05-10 | AL&R $12,000,000 — from PARTNERSHIP 91, L.P. to CAPITAL ONE, NATIONAL ASSOCIATION | $12,000,000 | |
| 2008-12-30 | Mortgage $3,766,825 — from PARTNERSHIP 91, L.P. to CAPITAL ONE, N.A | $3,766,825 | |
| 2008-12-30 | AL&R $8,000,000 — from PHILLIPS & HUYLER ASSOCIATES, L.P.; BLDG GRAND CONCOURSE LLC; PARTNERSHIP 91, L.P. to CAPITAL ONE, N.A | $8,000,000 | |
| 2008-12-30 | Agreement $8,000,000 — from PARTNERSHIP 91, L.P.; PHILLIPS & HUYLER ASSOCIATES, L.P.; BLDG GRAND CONCOURSE LLC to CAPITAL ONE, N.A | $8,000,000 | |
| 1993-08-31 | Mortgage $123,000 — from PARTNERSHIP 91 L.P. to BAYSIDE FEDERAL SVGSBK | $123,000 | |
| 1991-01-03 | Mortgage $3,750,000 — from WEST SIDE ASSOCIATES to AMERICAN SAVINGS BNKFSB | $3,750,000 | |
| 1989-05-05 | Mortgage $3,750,000 — from WEST SIDE ASSOCIATES to AMERICAN SAVS BANK | $3,750,000 | |
| 1986-02-13 | Mortgage $1,027,686 — from AMSTERDSAM AVE ETAL to 850 AMSTERDAM CO | $1,027,686 | |
| 1986-01-17 | Mortgage $150,000 — from JAL REALTY CORP to NATHANSON, JOSEPH | $150,000 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 3 | 0 | 2 | 0 | 3 | 8 |
| 2018 | 0 | 2 | 37 | 3 | 5 | 47 |
| 2019 | 7 | 1 | 17 | 0 | 13 | 38 |
| 2020 | 2 | 0 | 12 | 5 | 1 | 20 |
| 2021 | 0 | 1 | 43 | 0 | 1 | 45 |
| 2022 | 0 | 8 | 70 | 0 | 2 | 80 |
| 2023 | 2 | 2 | 44 | 0 | 2 | 50 |
| 2024 | 0 | 3 | 61 | 1 | 4 | 69 |
| 2025 | 2 | 4 | 35 | 0 | 2 | 43 |
| 2026 | 0 | 0 | 22 | 0 | 1 | 23 |
Every one of the 1,035 recorded events, 1900–2026, is laid out year by year in the full report (print-ready).
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