622 recorded events, 1985–2026, from 15 city data systems. The city's paper trail here is mostly 374 ACRIS deeds & mortgages, 65 311 service requests, 63 rodent inspections.
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 88% 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 1. In ZIP 10025, 70% of residential buildings hold an A and 2% 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 | 4 total — 0 class C (immediately hazardous), 3 class B, 1 class A. Oldest open since 2005-05-04. |
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.
10 service requests in the last three years. Most common: Missed Collection (3) · Curb Condition (2) · Homeless Person Assistance (2) · Noise (1) · Water System (1) · Rodent (1).
$286,400 in permitted construction work filed since 2016 (6 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) |
| Yes | Six or more residential units (15) |
| 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 RIVERTON |
| Head officer | MARK A TREMBLAY |
| Managing agent | SYNOPTIC MANAGEMENT CORP |
| Last registered | 2025-08-13 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $383,864 | $172,739 |
| 2026 | $297,753 | $133,989 |
| 2027 | $438,368 | $197,266 |
The city's market estimate has risen 14% between tax years 2025 and 2027.
For property tax, the Department of Finance values this condo as if it were a rental building. Its 2018 estimate: gross income $702,825 a year ($42.58 per sq ft), operating expenses $180,576 ($10.94 per sq ft), net operating income $522,249. These are the city's estimates from comparable rentals, not the building's actual budget, rents or maintenance charges.
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 | 96 St — 1 2 3 · 200 ft straight-line (about a 1-minute walk) · station accessibility: full |
| Bus | Nearest boarding stop: Broadway / W 94 St — M104 · 200 ft |
| Citi Bike | West End Ave & W 94 St · 350 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 075 Emily Dickinson. 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.
257 West 93 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 |
10 311 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 SYNOPTIC MANAGEMENT CORP — 91 buildings, 1,632 units. Grades across the portfolio: A71 · B14 · C3 · D1. See the whole portfolio
showing 60 of 91 buildings
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2024-03-05 | Deed $945,000 — from ESTATE OF SUSAN ROLLINS; FADEN, JOEL to LIPETZ, ROMAN; RST OF QUEENS, LLC | $945,000 | |
| 2024-02-28 | Sold for $945,000 | $945,000 | $63,000 |
| 2023-09-22 | Mortgage $700,001 — from FARB, JESSE SAMUEL to MORTGAGE ELECTRONIC REGISTRATION SERVICE | $700,001 | |
| 2023-09-22 | Deed $999,999 — from ESTATE OF JOACHIM CZECH; HERMA CHRISTINE FOX, EXECUTOR to FARB, JESSE SAMUEL | $999,999 | |
| 2023-09-08 | Sold for $999,999 | $999,999 | $66,667 |
| 2022-11-16 | Mortgage $70,000 — from KAHN, MICHAEL to TD BANK NA | $70,000 | |
| 2022-02-09 | Mortgage $520,600 — from SCHATZ, LOIS; SCHATZ, PHILIP to PHH MORTGAGE CORPORATION; MERS | $520,600 | |
| 2022-01-27 | Mortgage $405,941 — from DELL'ORTO NEE, GINEVRA; NEE, PATRICK W JR; DELL'ORTO, GINEVRA to ROCKET MORTGAGE, LLC; QUICKEN LOANS LLC; MERS | $405,941 | |
| 2022-01-13 | Mortgage $742,400 — from TSAY, VALENTIN to MORTGAGE ELECTRONIC REGISTRATION SYSTEMS; BANK OF AMERICA N.A. | $742,400 | |
| 2022-01-13 | Deed $928,000 — from MOORE, RONALD W to TSAY, VALENTIN | $928,000 | |
| 2021-12-21 | Sold for $928,000 | $928,000 | $61,867 |
| 2020-02-20 | Mortgage $89,722 — from TREMBLAY, MARK A; ZAPATKA, ANDREA to TD BANK NA | $89,722 | |
| 2020-02-20 | Agreement $1,138,822 — from ZAPATKA, ANDREA; TREMBLAY, MARK A to TD BANK NA | $1,138,822 | |
| 2019-11-06 | Agreement $435,959 — from MEDOFF, LISA MINDY; YOTIVE, WILLIAM to UNITED NATIONS FEDERAL CREDIT UNION | $435,959 | |
| 2019-10-31 | Agreement $942,500 — from BRUNI, GENNARO; MCCARTHY, KATHLEEN to RIDGEWOOD SAVINGS BANK | $942,500 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 0 | 2 | 12 | 3 | 3 | 20 |
| 2018 | 0 | 2 | 4 | 3 | 2 | 11 |
| 2019 | 0 | 0 | 8 | 10 | 28 | 46 |
| 2020 | 0 | 1 | 4 | 3 | 3 | 11 |
| 2021 | 6 | 0 | 13 | 3 | 6 | 28 |
| 2022 | 6 | 0 | 4 | 8 | 14 | 32 |
| 2023 | 0 | 0 | 7 | 6 | 3 | 16 |
| 2024 | 0 | 0 | 6 | 2 | 2 | 10 |
| 2025 | 0 | 0 | 3 | 0 | 2 | 5 |
| 2026 | 1 | 1 | 5 | 2 | 0 | 9 |
Every one of the 622 recorded events, 1985–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 10025 · Landlord rankings · How grades work · The map · The Mice Map