3,163 recorded events, 1900–2026, from 20 city data systems. The city's paper trail here is mostly 988 HPD complaints, 960 HPD housing violations, 942 311 service requests.
Full record, year by year Support this site
A sustained record of distress well beyond its peers. More recorded distress than 99% 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 257.9. In ZIP 11210, 88% of residential buildings hold an A and 3% grade D or F. How grades work
Among 4,677 100+-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 346 total — 83 class C (immediately hazardous), 205 class B, 58 class A. Oldest open since 2008-05-18. |
| Pending HPD litigation | 2 case(s) pending in housing court |
status snapshot refreshed weekly from HPD records
347 heat or hot-water complaints in the last three years (winter 2023–24: 20 · winter 2024–25: 144 · winter 2025–26: 166 · winter 2026–27: 2). 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.
453 service requests in the last three years. Most common: HEAT/HOT WATER (171) · UNSANITARY CONDITION (50) · Noise (43) · PLUMBING (40) · PAINT/PLASTER (31) · WATER LEAK (30).
$291,420 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 (1955) |
| Yes | Six or more residential units (108) |
| 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) | 4200 AVENUE K EQUITIES LLC |
| Head officer | MOSHE HALBERSTAN |
| Managing agent | DIAMOND MANAGEMENT |
| Last registered | 2025-08-21 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $4,125,000 | $1,856,250 |
| 2026 | $4,604,000 | $2,071,800 |
| 2027 | $4,800,000 | $2,160,000 |
The city's market estimate has risen 16% between tax years 2025 and 2027.
| Energy grade (LL33) | D — ENERGY STAR score 36/100, posted at the entrance by law (2022 disclosure cycle) |
| Heating fuel | NO2FUEL |
| Facade (Local Law 11) | SAFE (cycle 9) |
Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).
Hurricane evacuation zone 4 of 6 — zone 1 evacuates first.
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 | Flatbush Av-Brooklyn College — 2 5 · 0.8 mi straight-line (about a 20-minute walk) · station accessibility: full |
| Bus | Nearest boarding stop: Kings Hwy / Avenue K — B82-SBS · 450 ft · Select Bus Service |
| School zones (2024–25 map) | Elementary: 326 (K-2), 119 (2-5) Middle: Andries Hudde. 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.
4200 Avenue K
| 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 |
453 311 service requests from this address in the last three years — 171 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 DIAMOND MANAGEMENT — 13 buildings, 815 units. Grades across the portfolio: A3 · B1 · C6 · D2 · F1. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 4200 Avenue K | BK | 108 | D |
| 755 Ocean Avenue | BK | 95 | F |
| 224 Highland Boulevard | BK | 88 | C |
| 30 West 190 Street | BX | 84 | B |
| 4211 Avenue K | BK | 73 | C |
| 3140 Kingsbridge Avenue | BX | 70 | C |
| 43-01 46 Street | QN | 68 | A |
| 1001 Woodycrest Avenue | BX | 64 | D |
| 821 Lydig Avenue | BX | 60 | A |
| 1041 Nelson Avenue | BX | 58 | C |
| 150 Johnson Avenue | BK | 42 | A |
| 5207 15 Avenue | BK | 3 | C |
| 109-17 153 Street | QN | 2 | C |
Most recent mortgage recorded against this lot: $2,777,430 on 2020-10-05 (lender: New York Community Bank), covering 2 lots — the amount covers all of them. Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2024-01-04 | ASPM $16,117,000 — from 4200 AVENUE K EQUITIES, LLC; KF 4200 AVENUE K EQUITIES, LLC to FLAGSTAR BANK, N.A. SUCCESSOR IN INTERES; NEW YORK COMMUNITY BANK | $16,117,000 | |
| 2024-01-04 | AL&R $16,117,000 — from 4200 AVENUE K EQUITIES, LLC; KF 4200 AVENUE K EQUITIES, LLC to FLAGSTAR BANK, N.A. SUCCESSOR IN INTERES; NEW YORK COMMUNITY BANK | $16,117,000 | |
| 2020-10-05 | Mortgage $2,777,431 — from 4200 AVENUE K EQUITIES LLC to NEW YORK COMMUNITY BANK | $2,777,431 | |
| 2020-10-05 | AL&R $16,117,000 — from 4200 AVENUE K EQUITIES LLC to NEW YORK COMMUNITY BANK | $16,117,000 | |
| 2020-10-05 | Agreement $16,117,000 — from 4200 AVENUE K EQUITIES LLC to NEW YORK COMMUNITY BANK | $16,117,000 | |
| 2015-06-09 | Agreement $15,000,000 — from THE DIME SAVINGS BANK OF WILLIAMSBURGH to 4200 AVENUE K EQUITIES LLC | $15,000,000 | |
| 2015-06-09 | AL&R $15,000,000 — from THE DIME SAVINGS BANK OF WILLIAMSBURGH to 4200 AVENUE K EQUITIES LLC | $15,000,000 | |
| 2015-06-09 | Mortgage $6,718,534 — from 4200 AVENUE K EQUITIES LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $6,718,534 | |
| 2013-04-12 | Agreement $9,000,000 — from 4200 AVENUE K EQUITIES LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $9,000,000 | |
| 2010-04-28 | Mortgage $2,723,791 — from 4200 AVENUE K EQUITIES LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $2,723,791 | |
| 2010-04-28 | Agreement $9,000,000 — from 4200 AVENUE K EQUITIES LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $9,000,000 | |
| 2010-04-28 | AL&R $9,000,000 — from 4200 AVENUE K EQUITIES LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $9,000,000 | |
| 2004-01-06 | Mortgage $1,315,622 — from 4200 AVENUE K EQUITIES, LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $1,315,622 | |
| 2004-01-06 | Agreement $7,200,000 — from 4200 AVENUE K EQUITIES, LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $7,200,000 | |
| 1999-09-30 | Mortgage $1,000,000 — from 4200-4211 AVENUE K LLC to 4200 AVENUE K ASSOCIATES LP | $1,000,000 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 0 | 5 | 28 | 0 | 1 | 34 |
| 2018 | 0 | 4 | 69 | 0 | 1 | 74 |
| 2019 | 0 | 7 | 39 | 0 | 1 | 47 |
| 2020 | 7 | 10 | 113 | 5 | 3 | 138 |
| 2021 | 1 | 1 | 91 | 0 | 2 | 95 |
| 2022 | 0 | 1 | 181 | 0 | 2 | 184 |
| 2023 | 0 | 8 | 184 | 1 | 1 | 194 |
| 2024 | 0 | 5 | 506 | 3 | 2 | 516 |
| 2025 | 0 | 8 | 591 | 0 | 1 | 600 |
| 2026 | 0 | 5 | 321 | 0 | 2 | 328 |
Every one of the 3,163 recorded events, 1900–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11210 · Landlord rankings · How grades work · The map · The Mice Map