9,341 recorded events, 1966–2026, from 21 city data systems. The city's paper trail here is mostly 4,324 HPD complaints, 3,326 311 service requests, 935 HPD housing violations.
Full record, year by year Support this site
A modest record — below the level that usually signals systemic problems. More recorded distress than 73% of 25-99-unit residential buildings citywide. The citywide median for 25-99-unit residential buildings is 23.6 penalty points per 10 units; this building carries 78.6. In ZIP 10031, 40% of residential buildings hold an A and 14% grade D or F. How grades work
Among 17,252 25-99-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 28 total — 11 class C (immediately hazardous), 12 class B, 5 class A. Oldest open since 2020-10-02. |
| Pending HPD litigation | 1 case(s) pending in housing court |
status snapshot refreshed weekly from HPD records
349 heat or hot-water complaints in the last three years (winter 2023–24: 144 · winter 2024–25: 104 · winter 2025–26: 96). Repeated winter clusters suggest a chronic heating problem.
3 bedbug-infested unit(s) reported in filings over the last three years.
$1,875 in enforcement penalties imposed (ECB/OATH) in the last three years.
328 service requests in the last three years. Most common: HEAT/HOT WATER (174) · UNSANITARY CONDITION (38) · GENERAL (28) · PLUMBING (15) · ELECTRIC (11) · PAINT/PLASTER (9).
$1,653,598 in permitted construction work filed since 2016 (12 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 (1914) |
| Yes | Six or more residential units (98) |
| 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) | 644 RIVERSIDE HDFC |
| Head officer | JACQUELINE TOM |
| Managing agent | CONCORD MANAGEMENT OF NY, LLC |
| Last registered | 2025-10-09 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $6,094,000 | $2,742,300 |
| 2026 | $5,803,000 | $2,611,350 |
| 2027 | $6,101,000 | $2,745,450 |
The city's market estimate has risen 0% between tax years 2025 and 2027.
Tax exemptions on the roll: ARTICLE XI
| Energy grade (LL33) | C — ENERGY STAR score 57/100 (2022 disclosure cycle) |
| Heating fuel | NATURALGAS |
| Facade (Local Law 11) | SWARMP — "Safe With A Repair and Maintenance Program": known facade conditions that must be repaired (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.
1 street-flooding or sewer-backup complaints at this address since 2024 (1 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 | 145 St — 1 · 1,000 ft straight-line (about a 5-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Riverside Dr / W 142 St — M11 · 200 ft |
| Citi Bike | Broadway & W 142 St · 450 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 192 Jacob H. Schiff Middle: Harold O. Levy School. 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.
644 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 |
328 311 service requests from this address in the last three years — 174 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 CONCORD MANAGEMENT OF NY LLC — 301 buildings, 7,382 units. Grades across the portfolio: A20 · B63 · C84 · D80 · F52. See the whole portfolio
showing 60 of 301 buildings
Most recent mortgage recorded against this lot: $16,522,618 on 2025-03-12 (lender: Cpc Funding Spe 1 LLC). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2025-03-12 | AL&R $3,360,918 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $3,360,918 | |
| 2025-03-12 | AL&R $16,522,618 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $16,522,618 | |
| 2025-03-12 | AL&R $4,337,191 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $4,337,191 | |
| 2025-03-12 | AL&R $867,217 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $867,217 | |
| 2025-03-12 | Mortgage $3,360,918 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $3,360,918 | |
| 2025-03-12 | AL&R $1,722,468 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $1,722,468 | |
| 2025-03-12 | Mortgage $1,049,083 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $1,049,083 | |
| 2025-03-12 | Mortgage $16,522,618 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $16,522,618 | |
| 2025-03-12 | AL&R $74,550 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $74,550 | |
| 2025-03-12 | Agreement $20,700,293 — from SHUHAB HOUSING DEVELOPMENT FUND CORPORAT to BANK OF AMERICA, N.A. | $20,700,293 | |
| 2025-03-12 | AL&R $1,407,960 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $1,407,960 | |
| 2025-03-12 | Agreement $25,433,937 — from SHUHAB HOUSING DEVELOPMENT FUND CORPORAT to BANK OF AMERICA, N.A. | $25,433,937 | |
| 2025-03-12 | Mortgage $3,310,458 — from SHUHAB HOUSING DEVELOPMENT FUND CORPORAT to BANK OF AMERICA, N.A. | $3,310,458 | |
| 2025-03-12 | AL&R $1,049,083 — from 644 RIVERSIDE HOUSING DEVELOPMENT FUND C to CPC FUNDING SPE 1 LLC | $1,049,083 | |
| 2025-03-12 | Agreement $26,738,053 — from GP-UHAN HOUSING DEVELOPMENT FUND CORPORA; SHUHAB HOUSING DEVELOPMENT FUND CORPORAT to THE CITY OF NEW YORK | $26,738,053 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 3 | 2 | 537 | 2 | 2 | 546 |
| 2018 | 13 | 7 | 465 | 0 | 6 | 491 |
| 2019 | 8 | 8 | 267 | 0 | 3 | 286 |
| 2020 | 6 | 3 | 183 | 0 | 3 | 195 |
| 2021 | 5 | 9 | 341 | 0 | 6 | 361 |
| 2022 | 4 | 7 | 501 | 0 | 1 | 513 |
| 2023 | 3 | 9 | 313 | 0 | 4 | 329 |
| 2024 | 9 | 3 | 380 | 0 | 16 | 408 |
| 2025 | 13 | 4 | 230 | 33 | 4 | 284 |
| 2026 | 14 | 2 | 66 | 0 | 2 | 84 |
Every one of the 9,341 recorded events, 1966–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 10031 · Landlord rankings · How grades work · The map · The Mice Map