2,971 recorded events, 1979–2026, from 17 city data systems. The city's paper trail here is mostly 2,269 ACRIS deeds & mortgages, 191 DOB permits, 146 311 service requests.
Full record, year by year Support this site
The city's published records show little recorded distress here in the last three years. Less recorded distress than 69% 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 1.4. In ZIP 10075, 82% of residential buildings hold an A and 2% 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 | 8 total — 0 class C (immediately hazardous), 8 class B, 0 class A. Oldest open since 1986-04-16. |
status snapshot refreshed weekly from HPD records
No heat or hot-water complaints in the last three years.
No bedbug-infested units reported in the last three years of filings.
$625 in enforcement penalties imposed (ECB/OATH) in the last three years.
56 service requests in the last three years. Most common: Illegal Parking (38) · Homeless Person Assistance (4) · Noise (3) · Water System (3) · Blocked Driveway (2) · Non (1).
$7,672,428 in permitted construction work filed since 2016 (77 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 (1973) |
| Yes | Six or more residential units (124) |
| 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) | THE PARK 900 CONDOMINIUM |
| Head officer | DIANA HSU |
| Managing agent | DERMER MANAGEMENT |
| Last registered | 2025-12-31 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $306,149 | $137,767 |
| 2026 | $0 | $0 |
| 2027 | $467,544 | $210,395 |
The city's market estimate has risen 53% between tax years 2025 and 2027.
Tax exemptions on the roll: COLD WAR VETERAN - DISABILITY
For property tax, the Department of Finance values this condo as if it were a rental building. Its 2023 estimate: gross income $10,970,379 a year ($54.98 per sq ft), operating expenses $4,168,265 ($20.89 per sq ft), net operating income $6,802,114. These are the city's estimates from comparable rentals, not the building's actual budget, rents or maintenance charges.
| Energy grade (LL33) | D — ENERGY STAR score 45/100, posted at the entrance by law (2022 disclosure cycle) |
| Facade (Local Law 11) | SAFE (cycle 9) |
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 | 77 St — 6 · 850 ft straight-line (about a 4-minute walk) · station accessibility: none 86 St — 4 5 6 · 0.3 mi straight-line (about a 9-minute walk) · station accessibility: partial (Uptown local only) |
| Bus | Nearest boarding stop: E 79 St / Madison Av — M79-SBS · 250 ft · Select Bus Service |
| Citi Bike | E 81 St & Park Ave · 550 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 006 Lillie D. Blake Middle: J.H.S. 167 Robert F. Wagner. 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.
900 Park 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 |
56 311 service requests from this address in the last three years.
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 DERMER MANAGEMENT — 23 buildings, 712 units. Grades across the portfolio: A20 · B1 · C1. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 900 Park Avenue | MN | 124 | A |
| 114 West Street | BK | 93 | A |
| 92 Horatio Street | MN | 66 | A |
| 345 East 77 Street | MN | 60 | A |
| 2 King Street | MN | 40 | A |
| 137 East 28 Street | MN | 37 | A |
| 140 East 52 Street | MN | 32 | A |
| 22 Irving Place | MN | 29 | A |
| 104 East 37 Street | MN | 29 | A |
| 141 Wooster Street | MN | 28 | A |
| 407 East 12 Street | MN | 27 | A |
| 356 West 36 Street | MN | 26 | A |
| 64 Grand Street | MN | 22 | A |
| 476 Broadway | MN | 22 | A |
| 138 West 124 Street | MN | 21 | A |
| 361 West 36 Street | MN | 18 | A |
| 127 Prince Street | MN | 12 | A |
| 110 East 37 Street | MN | 8 | A |
| 40 East 72 Street | MN | 7 | A |
| 716 Madison Avenue | MN | 4 | B |
| 1101 Lexington Avenue | MN | 4 | C |
| 336 Lexington Avenue | MN | 3 | A |
| 119 West 22 Street | MN | 0 | — |
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2026-07-20 | Mortgage $3,000,000 — from KELKAR, ANEESH; MELAMED, TATIANA to MERS AS NOMINEE; CITIBANK, N.A | $3,000,000 | |
| 2026-07-20 | Deed $3,800,000 — from HELEN HADJIYANNAKIS BENDER AS TRUSTEE; TRUST U/A DATED MAY 13, 2008 MADEBY CYNT; JPMORGAN to KELKAR, ANEESH; MELAMED, TATIANA | $3,800,000 | |
| 2026-06-30 | Sold for $3,800,000 | $3,800,000 | $30,645 |
| 2026-06-15 | Deed $9,975,000 — from CUNOW, CARL; CUNOW, DALIA to FOA, JUSTIN | $9,975,000 | |
| 2026-06-15 | Deed $9,975,000 — from CUNOW, CARL; CUNOW, DALIA to FOA, JUSTIN | $9,975,000 | |
| 2026-06-15 | Deed $9,975,000 — from CUNOW, CARL; CUNOW, DALIA to FOA, JUSTIN | $9,975,000 | |
| 2026-06-15 | Deed $9,975,000 — from CUNOW, CARL; CUNOW, DALIA to FOA, JUSTIN | $9,975,000 | |
| 2026-06-09 | Deed $5,350,000 — from GOERL, KAREN to AVERON LLC | $5,350,000 | |
| 2026-06-09 | Deed $5,350,000 — from GOERL, KAREN to AVERON LLC | $5,350,000 | |
| 2026-06-05 | Sold for $9,975,000 | $9,975,000 | $80,444 |
| 2026-06-05 | Sold for $9,975,000 | $9,975,000 | $80,444 |
| 2026-06-05 | Sold for $9,975,000 | $9,975,000 | $80,444 |
| 2026-06-05 | Sold for $9,975,000 | $9,975,000 | $80,444 |
| 2026-06-01 | Sold for $5,350,000 | $5,350,000 | $43,145 |
| 2026-06-01 | Sold for $5,350,000 | $5,350,000 | $43,145 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 7 | 1 | 4 | 38 | 2 | 52 |
| 2018 | 41 | 3 | 7 | 48 | 3 | 102 |
| 2019 | 10 | 6 | 7 | 18 | 5 | 46 |
| 2020 | 29 | 4 | 8 | 33 | 2 | 76 |
| 2021 | 23 | 1 | 10 | 46 | 0 | 80 |
| 2022 | 11 | 8 | 24 | 63 | 5 | 111 |
| 2023 | 27 | 0 | 26 | 22 | 2 | 77 |
| 2024 | 4 | 1 | 27 | 30 | 1 | 63 |
| 2025 | 10 | 3 | 14 | 42 | 0 | 69 |
| 2026 | 7 | 1 | 9 | 40 | 0 | 57 |
Every one of the 2,971 recorded events, 1979–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 10075 · Landlord rankings · How grades work · The map · The Mice Map