1,041 recorded events, 1974–2026, from 16 city data systems. The city's paper trail here is mostly 587 HPD complaints, 140 311 service requests, 82 HPD emergency-repair charges.
Full record, year by year Support this site
A modest record — below the level that usually signals systemic problems. More recorded distress than 78% of 6-24-unit residential buildings citywide. The citywide median for 6-24-unit residential buildings is 16.3 penalty points per 10 units; this building carries 73.3. In ZIP 11221, 43% of residential buildings hold an A and 17% grade D or F. How grades work
Among 46,798 6-24-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 3 total — 1 class C (immediately hazardous), 2 class B, 0 class A. Oldest open since 2011-05-10. |
status snapshot refreshed weekly from HPD records
2 heat or hot-water complaints in the last three years.
No bedbug-infested units reported in the last three years of filings.
15 service requests in the last three years. Most common: PLUMBING (5) · Noise (3) · Water System (2) · Dirty Condition (1) · Building/Use (1) · Root/Sewer/Sidewalk Condition (1).
No permitted work with a declared cost filed in the last decade. 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 (6) |
| 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) | 638 ADAR LLC |
| Head officer | STEVEN GOLDSCHMIED |
| Managing agent | YHT MANAGEMENT |
| Last registered | 2025-08-28 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $1,109,000 | $499,050 |
| 2026 | $1,331,000 | $598,950 |
| 2027 | $1,597,000 | $718,650 |
The city's market estimate has risen 44% between tax years 2025 and 2027.
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 | Kosciuszko St — J · 250 ft straight-line (about a 1-minute walk) · station accessibility: none Central Av — M · 0.3 mi straight-line (about an 8-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Broadway / Kossuth Pl — B47 · 250 ft |
| Citi Bike | Broadway & Kosciuszko St · 250 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 274 Kosciusko Middle: 347, 349. 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.
638 Kosciuszko Street
| 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 |
15 311 service requests from this address in the last three years — 1 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 YHT MANAGEMENT — 82 buildings, 618 units. Grades across the portfolio: A14 · B29 · C18 · D15 · F5. See the whole portfolio
showing 60 of 82 buildings
Most recent mortgage recorded against this lot: $402,644 on 2022-11-01 (lender: JPMorgan Chase Bank NA). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2022-11-01 | Agreement $1,350,000 — from 638 ADAR LLC to JPMORGAN CHASE BANK NA | $1,350,000 | |
| 2022-11-01 | Mortgage $402,645 — from 638 ADAR LLC to JPMORGAN CHASE BANK NA | $402,645 | |
| 2013-11-01 | AL&R $1,150,000 — from 638 ADAR LLC to INVESTORS BANK | $1,150,000 | |
| 2013-11-01 | Mortgage $850,000 — from 638 ADAR LLC to INVESTORS BANK | $850,000 | |
| 2013-11-01 | Agreement $1,150,000 — from 638 ADAR LLC to INVESTORS BANK | $1,150,000 | |
| 2012-03-15 | Mortgage $300,000 — from 638 ADAR LLC to MITCHELL KAPLAN | $300,000 | |
| 2012-03-15 | Deed $400,000 — from 638 KOSCIUSKO LLC to 638 ADAR LLC | $400,000 | |
| 2011-07-20 | Deed $140,000 — from 638 KOSCIUSKO STREET LLC to 638 KOSCIUSKO LLC | $140,000 | |
| 2008-05-12 | Mortgage $150,000 — from 638 KOSCIUSKO STREET LLC; WEISS, ESTHER to LOWENTHAL & KOFMAN, P.C. | $150,000 | |
| 2007-03-30 | AL&R $140,000 — from 638 KOSCIUSKO STREET LLC to KIMMEL, JAY | $140,000 | |
| 2007-03-30 | Mortgage $140,000 — from 638 KOSCIUSKO STREET LLC to KIMMEL, JAY | $140,000 | |
| 2004-10-26 | Deed $277,000 — from THE BANK OF NEW YORK ACTING SOLELY IN IT to 638 KOSCIUSKO STREET LLC | $277,000 | |
| 2004-02-24 | Deed $281,079 — from SPECTOR, REFEREE, LEONARD C to THE BANK OF NEW YORK, ACTING SOLELY IN I | $281,079 | |
| 2001-02-20 | Mortgage $205,000 — from RUBIO, MARCO to INTERSTATE RESOURCECORP | $205,000 | |
| 1998-03-27 | Mortgage $161,000 — from PADAR, KEVIN F to OCEANMARK FINANCIALCORPORATION | $161,000 |
| Year | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|
| 2017 | 1 | 2 | 0 | 3 | 6 |
| 2018 | 1 | 4 | 0 | 5 | 10 |
| 2019 | 1 | 2 | 0 | 4 | 7 |
| 2020 | 0 | 5 | 0 | 1 | 6 |
| 2021 | 0 | 3 | 0 | 9 | 12 |
| 2022 | 0 | 12 | 4 | 2 | 18 |
| 2023 | 6 | 20 | 0 | 4 | 30 |
| 2024 | 2 | 17 | 0 | 5 | 24 |
| 2025 | 1 | 4 | 0 | 10 | 15 |
| 2026 | 0 | 3 | 0 | 4 | 7 |
Every one of the 1,041 recorded events, 1974–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11221 · Landlord rankings · How grades work · The map · The Mice Map