1,231 recorded events, 1900–2026, from 18 city data systems. The city's paper trail here is mostly 384 HPD complaints, 312 311 service requests, 227 HPD housing violations.
Full record, year by year Support this site
A modest record — below the level that usually signals systemic problems. More recorded distress than 69% of 25-99-unit residential buildings citywide. The citywide median for 25-99-unit residential buildings is 23.6 penalty points per 10 units; this building carries 64.3. In ZIP 10459, 52% of residential buildings hold an A and 16% grade D or F. How grades work
Among 17,252 25-99-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 21 total — 3 class C (immediately hazardous), 7 class B, 11 class A. Oldest open since 2021-12-14. |
status snapshot refreshed weekly from HPD records
44 heat or hot-water complaints in the last three years (winter 2024–25: 22 · winter 2025–26: 20). Repeated winter clusters suggest a chronic heating problem.
No bedbug-infested units reported in the last three years of filings.
$10,000 in enforcement penalties imposed (ECB/OATH) in the last three years.
106 service requests in the last three years. Most common: HEAT/HOT WATER (22) · PLUMBING (16) · DOOR/WINDOW (13) · PAINT/PLASTER (7) · APPLIANCE (6) · Elevator (5).
$102,900 in permitted construction work filed since 2016 (4 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 (1925) |
| Yes | Six or more residential units (39) |
| 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) | 850 LONGWOOD AVE HDFC |
| Head officer | HOPE BURGESS |
| Managing agent | BANANA KELLY CIA, INC |
| Last registered | 2025-07-22 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $3,212,000 | $1,445,400 |
| 2026 | $2,876,000 | $1,294,200 |
| 2027 | $2,820,000 | $1,269,000 |
The city's market estimate has fallen 12% between tax years 2025 and 2027.
Tax exemptions on the roll: ARTICLE XI
| Energy grade (LL33) | D — ENERGY STAR score 14/100, posted at the entrance by law (2022 disclosure cycle) |
| Heating fuel | NO2FUEL |
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 | Prospect Av — 2 5 · 150 ft straight-line (about a 1-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Prospect Av / Westchester Av — Bx46 · 150 ft |
| Citi Bike | Prospect Ave & Longwood Ave · 150 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 130 Abram Stevens Hewitt Middle: M.S. 302 Luisa Dessus Cruz. 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 Longwood 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 |
106 311 service requests from this address in the last three years — 22 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 BANANA KELLY CIA INC. — 50 buildings, 1,285 units. Grades across the portfolio: A7 · B19 · C16 · D7 · F1. See the whole portfolio
Most recent mortgage recorded against this lot: $2,959,583 on 2016-11-22 (lender: The Community Preservation Corporation). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2016-11-22 | Agreement $504,000 — from 850 LONGWOOD HOUSING DEVELOPMENT FUND CO to CITY OF NEW YORK THROUGH DEPARTMENT OF H | $504,000 | |
| 2016-11-22 | Agreement $2,776,511 — from 850 LONGWOOD HOUSING DEVELOPMENT FUND CO to CITY OF NEW YORK THROUGH DEPARTMENT OF H | $2,776,511 | |
| 2016-11-22 | AL&R $2,959,583 — from 850 LONGWOOD HOUSING DEVELOPMENT FUND CO to THE COMMUNITY PRESERVATION CORPORATION | $2,959,583 | |
| 2016-11-22 | Mortgage $2,959,583 — from 850 LONGWOOD HOUSING DEVELOPMENT FUND CO to THE COMMUNITY PRESERVATION CORPORATION | $2,959,583 | |
| 2012-06-05 | Mortgage $6,402,492 — from FKA T3 UNISON SITE MANAGEMENT LLC; GLP CELL SITE IV, LLC; CELL TOWER LEASE ACQUISITION LLC to DEUTSCHE BANK TGRUST COMPANY AMERICAS | $6,402,492 | |
| 2010-03-03 | RPTT&RET $1,211,742 — from UNISON SITE MANAGEMENT, LLC to UNISON SITE MANAGEMENT, LLC | $1,211,742 | |
| 2010-01-08 | Mortgage $114,232 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to THE COMMUNITY PRESERVATION CORPORATION | $114,232 | |
| 2010-01-08 | Mortgage $279,737 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to THE COMMUNITY PRESERVATION CORPORATION | $279,737 | |
| 2010-01-08 | Mortgage $637,462 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to THE COMMUNITY PRESERVATION CORPORATION | $637,462 | |
| 2010-01-08 | Mortgage $1,094,650 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to THE COMMUNITY PRESERVATION CORPORATION | $1,094,650 | |
| 2010-01-08 | Agreement $504,000 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to THE COMMUNITY PRESERVATION CORPORATION | $504,000 | |
| 2010-01-08 | Agreement $2,024,817 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to THE COMMUNITY PRESERVATION CORPORATION | $2,024,817 | |
| 2010-01-08 | Agreement $1,560,183 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to THE COMMUNITY PRESERVATION CORPORATION | $1,560,183 | |
| 2010-01-08 | AL&R $62,158,081 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to THE COMMUNITY PRESERVATION CORPORATION | $62,158,081 | |
| 2006-10-24 | LEAS $225,033 — from 850 LONGWOOD AVENUE HOUSING DEVELOPMENT to UNISON SITE MANAGEMENT, LLC | $225,033 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 1 | 2 | 59 | 0 | 2 | 64 |
| 2018 | 0 | 1 | 36 | 0 | 1 | 38 |
| 2019 | 0 | 2 | 57 | 0 | 1 | 60 |
| 2020 | 0 | 2 | 9 | 0 | 2 | 13 |
| 2021 | 0 | 5 | 29 | 0 | 1 | 35 |
| 2022 | 2 | 1 | 25 | 0 | 3 | 31 |
| 2023 | 1 | 3 | 14 | 0 | 5 | 23 |
| 2024 | 3 | 1 | 31 | 2 | 8 | 45 |
| 2025 | 3 | 15 | 183 | 0 | 2 | 203 |
| 2026 | 3 | 3 | 29 | 0 | 0 | 35 |
Every one of the 1,231 recorded events, 1900–2026, is laid out year by year in the full report (print-ready).
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