384 recorded events, 1979–2026, from 13 city data systems. The city's paper trail here is mostly 273 311 service requests, 33 DOB violations, 13 boiler inspections.
Full record, year by year Support this site
A modest record — below the level that usually signals systemic problems. More recorded distress than 82% of 1-5-unit residential buildings citywide. The citywide median for 1-5-unit residential buildings is 0 penalty points per 10 units; this building carries 7. In ZIP 11103, 72% of residential buildings hold an A and 4% grade D or F. How grades work
Among 699,345 1-5-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 1 total — 0 class C (immediately hazardous), 0 class B, 1 class A. Oldest open since 2026-06-14. |
status snapshot refreshed weekly from HPD records
2 heat or hot-water complaints in the last three years (winter 2023–24: 2).
No bedbug-infested units reported in the last three years of filings.
65 service requests in the last three years. Most common: Noise (51) · Outdoor Dining (5) · Dirty Condition (2) · DOOR/WINDOW (2) · Graffiti (2) · HEAT/HOT WATER (1).
$11,300 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 (1930) |
| No | Six or more residential units (4) |
| No | 421-a / J-51 tax benefit on the current tax roll |
1 of 3 signals present. Only a partial profile — stabilization is possible but less likely. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).
| Registered owner(s) | 4221 BROADWAY LLC |
| Head officer | DEAN KARTSONIS |
| Managing agent | KARTSONIS REALTY LLC |
| Last registered | 2025-09-26 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $1,345,000 | $605,250 |
| 2026 | $1,225,000 | $551,250 |
| 2027 | $1,470,000 | $661,500 |
The city's market estimate has risen 9% 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.
1 street-flooding or sewer-backup complaints at this address since 2023 (0 in the last three years).
Sources: FEMA flood maps (coastal), NYC DEP Stormwater Flood Maps (cloudburst), NYC hurricane evacuation zones, and 311 records for this address.
| Subway | 46 St — M R · 750 ft straight-line (about a 4-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Broadway / 44 St — Q104 · 250 ft |
| Citi Bike | 43 St & Broadway · 150 ft · station location as of 2026-09-23; live availability |
| Bike facility | Painted bike lane mapped within 75 ft |
| School zones (2024–25 map) | Elementary: P.S. 070 Middle: I.S. 010 Horace Greeley. 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.
42-21 Broadway
| 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 |
65 311 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 KARTSONIS REALTY LLC — 5 buildings, 83 units. Grades across the portfolio: A3 · B2. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 25-50 30 Road | QN | 60 | A |
| 40-11 Broadway | QN | 10 | B |
| 32-52 45 Street | QN | 5 | A |
| 42-21 Broadway | QN | 4 | B |
| 43-08 Broadway | QN | 4 | A |
Most recent mortgage recorded against this lot: $168,875 on 1990-01-26 (lender: Astoria Fed S&l Assn). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 1990-01-26 | Mortgage $168,876 — from KARTSONIS, BILL K to ASTORIA FED S&L ASSN | $168,876 | |
| 1985-11-13 | Mortgage $118,197 — from KARTSONIS, BILL K. to ASTORIA FED S&L ASSN | $118,197 |
| Year | Construction | Enforcement | Housing & tenants | Health & systems | Total |
|---|---|---|---|---|---|
| 2017 | 0 | 4 | 5 | 1 | 10 |
| 2018 | 0 | 4 | 2 | 7 | 13 |
| 2019 | 0 | 4 | 23 | 3 | 30 |
| 2020 | 0 | 2 | 50 | 1 | 53 |
| 2021 | 4 | 4 | 38 | 1 | 47 |
| 2022 | 0 | 0 | 28 | 3 | 31 |
| 2023 | 0 | 1 | 35 | 1 | 37 |
| 2024 | 0 | 0 | 30 | 1 | 31 |
| 2025 | 0 | 0 | 12 | 1 | 13 |
| 2026 | 0 | 0 | 11 | 0 | 11 |
Every one of the 384 recorded events, 1979–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11103 · Landlord rankings · How grades work · The map · The Mice Map