298 recorded events, 1973–2026, from 14 city data systems. The city's paper trail here is mostly 106 311 service requests, 77 HPD complaints, 24 ACRIS deeds & mortgages.
Full record, year by year Support this site
A modest record — below the level that usually signals systemic problems. More recorded distress than 64% 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 30.6. In ZIP 11215, 70% of residential buildings hold an A and 4% 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 | 2 total — 1 class C (immediately hazardous), 1 class B, 0 class A. Oldest open since 2019-02-19. |
status snapshot refreshed weekly from HPD records
54 heat or hot-water complaints in the last three years (winter 2023–24: 40 · winter 2025–26: 14). Repeated winter clusters suggest a chronic heating problem.
No bedbug-infested units reported in the last three years of filings.
33 service requests in the last three years. Most common: HEAT/HOT WATER (27) · Hazardous Materials (2) · Air Quality (1) · Street Sign (1) · Lead (1) · Noise (1).
$272,750 in permitted construction work filed since 2016 (3 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 (1905) |
| Yes | Six or more residential units (16) |
| 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) | 594 6TH STREET REALTY LLC |
| Head officer | NICHOLAS G KOTSONIS |
| Managing agent | KOTSONIS ORGANIZATION, LLC. |
| Last registered | 2025-10-11 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $2,185,000 | $983,250 |
| 2026 | $2,187,000 | $984,150 |
| 2027 | $2,095,000 | $942,750 |
The city's market estimate has fallen 4% between tax years 2025 and 2027.
| Heating fuel | NATURALGAS |
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 | 7 Av — F G · 700 ft straight-line (about a 4-minute walk) · station accessibility: full |
| Bus | Nearest boarding stop: 9 St / 8 Av — B61 · 750 ft |
| Citi Bike | Prospect Park West & 8 St · 650 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 039 Henry Bristow. 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.
594 6 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 |
33 311 service requests from this address in the last three years — 27 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 KOTSONIS ORGANIZATION LLC. — 27 buildings, 239 units. Grades across the portfolio: A20 · B6 · C1. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 94 Prospect Park West | BK | 30 | A |
| 594 6 Street | BK | 16 | B |
| 101 Prospect Park West | BK | 10 | A |
| 767 Union Street | BK | 10 | A |
| 549 Bergen Street | BK | 10 | B |
| 770 Union Street | BK | 9 | B |
| 886 Union Street | BK | 9 | B |
| 392 Prospect Avenue | BK | 8 | A |
| 693 Union Street | BK | 8 | A |
| 873 Union Street | BK | 8 | A |
| 845 President Street | BK | 8 | A |
| 195 5 Avenue | BK | 8 | A |
| 896 Union Street | BK | 8 | B |
| 768 Union Street | BK | 8 | A |
| 298 1 Street | BK | 8 | A |
| 898 Union Street | BK | 8 | B |
| 664 6 Avenue | BK | 8 | A |
| 695 Union Street | BK | 8 | A |
| 800 President Street | BK | 8 | A |
| 134 29 Street | BK | 8 | A |
| 832 Union Street | BK | 7 | A |
| 74 Douglass Street | BK | 7 | A |
| 248 5 Avenue | BK | 7 | A |
| 21 Sterling Place | BK | 6 | A |
| 633 10 Street | BK | 6 | A |
| 287 19 Street | BK | 5 | A |
| 287 6 Avenue | BK | 3 | C |
Most recent mortgage recorded against this lot: $140,102 on 2022-09-15 (lender: JPMorgan Chase Bank, N.A.). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2022-09-15 | Mortgage $140,103 — from 594 6TH STREET REALTY LLC to JPMORGAN CHASE BANK, N.A. | $140,103 | |
| 2022-09-15 | Agreement $2,500,000 — from 594 6TH STREET REALTY LLC to JPMORGAN CHASE BANK, N.A. | $2,500,000 | |
| 2017-09-14 | SMTG $1,577,511 — from 594 6TH STREET REALTY LLC to DIME COMMUNITY BANK | $1,577,511 | |
| 2017-09-14 | Mortgage $1,042,489 — from 594 6TH STREET REALTY LLC to DIME COMMUNITY BANK | $1,042,489 | |
| 2017-09-14 | Agreement $2,620,000 — from 594 6TH STREET REALTY LLC to DIME COMMUNITY BANK | $2,620,000 | |
| 2017-09-14 | AL&R $2,620,000 — from 594 6TH STREET REALTY LLC to DIME COMMUNITY BANK | $2,620,000 | |
| 2017-09-07 | Agreement $3,943,777 — from 896 UNION STREET REALTY LLC; 594 6TH STREET REALTY LLC; 898 UNION STREET REALTY LLC to DIME COMMUNITY BANK | $3,943,777 | |
| 2012-11-19 | Mortgage $1,044,468 — from 896 UNION STREET REALTY LLC; 594 6TH STREET REALTY LLC; 898 UNION STREET REALTY LLC to INVESTORS BANK | $1,044,468 | |
| 2012-11-19 | Agreement $4,375,000 — from 594 6TH STREET REALTY LLC; 896 UNION STREET REALTY LLC; 898 UNION STREET REALTY LLC to INVESTORS BANK | $4,375,000 | |
| 2012-11-19 | AL&R $4,375,000 — from 898 UNION STREET REALTY LLC; 594 6TH STREET REALTY LLC; 896 UNION STREET REALTY LLC to INVESTORS BANK | $4,375,000 | |
| 2008-07-29 | Mortgage $3,500,000 — from 896 UNION STREET REALTY LLC; 898 UNION STREET REALTY LLC; 594 6TH STREET REALTY LLC to FIRST CENTRAL SAVINGS BANK | $3,500,000 | |
| 2008-07-23 | Mortgage $1,512,500 — from 594 6TH STREET REALTY LLC to FIRST CENTRAL SAVINGS BANK | $1,512,500 | |
| 2008-07-23 | AL&R $1,512,500 — from 594 6TH STREET REALTY LLC to FIRST CENTRAL SAVINGS BANK | $1,512,500 | |
| 2008-07-23 | Deed $2,018,000 — from THE ESTATE OF ALICE MERHIGE; JOHN SHOFI, AS EXECUTOR to 594 6TH STREET REALTY LLC | $2,018,000 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 0 | 2 | 8 | 7 | 0 | 17 |
| 2018 | 4 | 2 | 9 | 0 | 1 | 16 |
| 2019 | 0 | 0 | 12 | 0 | 1 | 13 |
| 2020 | 0 | 3 | 12 | 0 | 2 | 17 |
| 2021 | 0 | 0 | 8 | 0 | 1 | 9 |
| 2022 | 0 | 0 | 9 | 4 | 3 | 16 |
| 2023 | 0 | 1 | 27 | 0 | 1 | 29 |
| 2024 | 0 | 1 | 36 | 0 | 2 | 39 |
| 2025 | 0 | 0 | 4 | 0 | 1 | 5 |
| 2026 | 0 | 0 | 16 | 0 | 1 | 17 |
Every one of the 298 recorded events, 1973–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11215 · Landlord rankings · How grades work · The map · The Mice Map