909 recorded events, 1900–2026, from 19 city data systems. The city's paper trail here is mostly 192 DOB permits, 154 ACRIS deeds & mortgages, 152 311 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 79% 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 0.8. In ZIP 10025, 70% 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 | 7 total — 0 class C (immediately hazardous), 6 class B, 1 class A. Oldest open since 1992-09-16. |
status snapshot refreshed weekly from HPD records
No heat or hot-water complaints in the last three years.
1 bedbug-infested unit(s) reported in filings over the last three years.
25 service requests in the last three years. Most common: Noise (10) · Illegal Parking (4) · Sanitation Worker or Vehicle Complaint (2) · Sidewalk Condition (2) · Abandoned Vehicle (1) · Bus Stop Shelter Complaint (1).
$5,343,672 in permitted construction work filed since 2016 (46 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 (1912) |
| Yes | Six or more residential units (104) |
| 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) | 420 RIVERSIDE OWNERS CORP |
| Head officer | STEVEN R HOFFMAN |
| Managing agent | HOFFMAN MANAGEMENT |
| Last registered | 2025-08-04 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $19,180,000 | $8,631,000 |
| 2026 | $20,391,000 | $9,175,950 |
| 2027 | $22,039,000 | $9,917,550 |
The city's market estimate has risen 15% between tax years 2025 and 2027.
Tax exemptions on the roll: COLD WAR VETERAN - DISABILITY
For property tax, the Department of Finance values this co-op as if it were a rental building. Its 2021 estimate: gross income $3,899,746 a year ($28.13 per sq ft), operating expenses $1,856,296 ($13.39 per sq ft), net operating income $2,043,450. These are the city's estimates from comparable rentals, not the building's actual budget, rents or maintenance charges.
| Energy grade (LL33) | B — ENERGY STAR score 84/100 (2022 disclosure cycle) |
| Heating fuel | NO2FUEL |
| Facade (Local Law 11) | SWARMP — "Safe With A Repair and Maintenance Program": known facade conditions that must be repaired (cycle 10) |
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 2018 (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 | 116 St-Columbia University — 1 · 700 ft straight-line (about a 4-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Riverside Dr / W 114 St — M5 · 150 ft |
| Citi Bike | W 116 St & Broadway · 650 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 165 Robert E. Simon. 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.
420 Riverside Drive
| 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 |
25 311 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 HOFFMAN MANAGEMENT — 69 buildings, 3,893 units. Grades across the portfolio: A64 · B4 · D1. See the whole portfolio
showing 60 of 69 buildings
Most recent mortgage recorded against this lot: $1,000,000 on 2007-10-03 (lender: National Consumer Cooperative Bank and Ncb). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2026-02-25 | RPTT&RET $496,860 — from 420 RSD LLC to MISNER, MICHAEL; WRIGHT, INGRID | $496,860 | |
| 2026-02-19 | RPTT&RET $1,800,000 — from KATZ, CAROLINE LEIGH; KATZ, ALEXANDER REED; KATZ, BRUCE ELLIOT to HAGAR, AMY S; HAGAR, CHRISTOPHER T | $1,800,000 | |
| 2026-02-10 | Sold for $496,860 | $496,860 | $4,778 |
| 2026-01-20 | Sold for $1,800,000 | $1,800,000 | $17,308 |
| 2025-12-23 | RPTT&RET $2,025,000 — from WILLIAM JELINEK AS CO-EXECUTOR; HANNAH JELINEK SARBIN AS CO-EXECUTOR; ESTATE OF MILENA JEL to CHASE, DAVID; CHASE, PAULA LEGGETT | $2,025,000 | |
| 2025-12-22 | RPTT&RET $1,900,000 — from WESTMAN, JR EXECUTOR, FREDERICK P; ESTATE OF BARBARA W. DANTO to UPTON, JOHN WARE | $1,900,000 | |
| 2025-12-15 | Sold for $1,900,000 | $1,900,000 | $18,269 |
| 2025-12-09 | Sold for $2,025,000 | $2,025,000 | $19,471 |
| 2025-08-12 | RPTT&RET $1,325,000 — from ARON, LAURIE JOAN; SCHNECK, MATTHEW A to KUBACKI, KRISTEN ANNE; KRAUSS, DAVID BARNETT | $1,325,000 | |
| 2025-08-01 | RPTT&RET $1,237,500 — from LISA KRIZMAN; ROBERT KRIZMAN; LISA KRIZMAN LIVING TRUST DATED OCTOBER to KALER, MARYANN; KALER, STEPHEN GERARD | $1,237,500 | |
| 2025-07-21 | Sold for $1,325,000 | $1,325,000 | $12,740 |
| 2025-07-15 | Sold for $1,237,500 | $1,237,500 | $11,899 |
| 2024-12-24 | RPTT&RET $660,000 — from RODGERS, JAMES ROBERT JR; RODGERS, JAMES R JR to COLEMAN, ROGER; BARBOUR, ROSALIND | $660,000 | |
| 2024-12-12 | Sold for $660,000 | $660,000 | $6,346 |
| 2024-10-16 | RPTT&RET $435,000 — from ISHIDA, MIKI to JUNGCLAUS, ANDREW; MAINES, EVAN | $435,000 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 16 | 9 | 5 | 10 | 4 | 44 |
| 2018 | 23 | 4 | 19 | 9 | 21 | 76 |
| 2019 | 10 | 8 | 7 | 7 | 1 | 33 |
| 2020 | 16 | 2 | 11 | 2 | 1 | 32 |
| 2021 | 7 | 1 | 11 | 8 | 3 | 30 |
| 2022 | 7 | 0 | 9 | 8 | 3 | 27 |
| 2023 | 7 | 8 | 8 | 4 | 4 | 31 |
| 2024 | 10 | 4 | 4 | 8 | 7 | 33 |
| 2025 | 5 | 1 | 15 | 11 | 6 | 38 |
| 2026 | 17 | 0 | 8 | 6 | 1 | 32 |
Every one of the 909 recorded events, 1900–2026, is laid out year by year in the full report (print-ready).
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