200 recorded events, 1968–2026, from 14 city data systems. The city's paper trail here is mostly 51 311 service requests, 48 HPD complaints, 32 ACRIS deeds & mortgages.
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 82% 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 2.5. In ZIP 11221, 43% of residential buildings hold an A and 17% 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 | 1 total — 0 class C (immediately hazardous), 0 class B, 1 class A. Oldest open since 2021-06-10. |
status snapshot refreshed weekly from HPD records
4 heat or hot-water complaints in the last three years (winter 2025–26: 4).
No bedbug-infested units reported in the last three years of filings.
4 service requests in the last three years. Most common: HEAT/HOT WATER (2) · Indoor Air Quality (1) · Noise (1).
No permitted work with a declared cost filed in the last decade. Permit costs cover filed construction work only — they do not capture routine maintenance or repairs done without a permit.
| Yes | Built before 1974 (1931) |
| Yes | Six or more residential units (8) |
| 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) | SERLING BUILDING LP |
| Head officer | LINDA VERA |
| Managing agent | DIRECT BUILDING MANAGEMENT |
| Last registered | 2025-09-12 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $1,685,000 | $758,250 |
| 2026 | $1,534,000 | $690,300 |
| 2027 | $1,788,000 | $804,600 |
The city's market estimate has risen 6% between tax years 2025 and 2027.
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 | Myrtle-Wyckoff Avs — L M · 0.3 mi straight-line (about a 7-minute walk) · station accessibility: full |
| Bus | Nearest boarding stop: Wilson Av / Cornelia St — B60 · 800 ft |
| Citi Bike | Putnam Ave & Knickerbocker Ave · 100 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 106 Edward Everett Hale Middle: J.H.S. 291 Roland Hayes. 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.
651 Knickerbocker 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 |
4 311 service requests from this address in the last three years — 2 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 DIRECT BUILDING MANAGEMENT — 87 buildings, 523 units. Grades across the portfolio: A41 · B30 · C5 · D7 · F2. See the whole portfolio
showing 60 of 87 buildings
Most recent mortgage recorded against this lot: $2,078,713 on 2008-12-24 (lender: City Of Newyork), covering 10 lots — the amount covers all of them. Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2008-12-24 | Mortgage $2,078,713 — from SERLIN BUILDING LIMITED PARTNERSHIP to CITY OF NEWYORK | $2,078,713 | |
| 2008-12-24 | Agreement $14,373,860 — from CITY OF NEWYORK to SERLIN BUILDING LIMITED PARTNERSHIP | $14,373,860 | |
| 2008-12-24 | Deed $11,740,800 — from NEIGHBORHOOD PARTNERSHIP HOUING DEVELOPM to SERLIN BUILDING LIMITED PARTNERSHIP | $11,740,800 | |
| 2005-02-17 | Mortgage $11,194,978 — from NEIGHBORHOOD PARTNERSHIP HDFC, INC.; SERLIN BUILDING MANAGEMENT,INC. to THE BANK OF NEW YORK | $11,194,978 | |
| 2005-02-17 | AL&R $24,568,888 — from THE BANK OF NEW YORK to SERLIN BUILDING MANAGEMENT,INC.; NEIGHBORHOOD PARTNERSHIP HDFC, INC. | $24,568,888 | |
| 2005-02-17 | Mortgage $1,089,466 — from NEIGHBORHOOD PARTNERSHIP HDFC, INC.; SERLIN BUILDING MANAGEMENT,INC. to THE BANK OF NEW YORK | $1,089,466 | |
| 2005-02-17 | Mortgage $1,089,466 — from NEIGHBORHOOD PARTNERSHIP HDFC, INC.; SERLIN BUILDING MANAGEMENT,INC. to THE BANK OF NEW YORK | $1,089,466 | |
| 2005-02-17 | Mortgage $11,194,978 — from SERLIN BUILDING MANAGEMENT,INC.; NEIGHBORHOOD PARTNERSHIP HDFC, INC. to THE BANK OF NEW YORK | $11,194,978 | |
| 1982-08-06 | Mortgage $10,800 — from JEFF-KNICK REALTY INC to ARTUSO, GRAZIOSO | $10,800 |
| Year | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|
| 2017 | 0 | 6 | 0 | 0 | 6 |
| 2018 | 0 | 2 | 1 | 1 | 4 |
| 2019 | 0 | 26 | 0 | 1 | 27 |
| 2020 | 0 | 6 | 0 | 1 | 7 |
| 2021 | 0 | 9 | 0 | 1 | 10 |
| 2022 | 0 | 5 | 0 | 3 | 8 |
| 2023 | 0 | 4 | 0 | 3 | 7 |
| 2024 | 0 | 0 | 0 | 2 | 2 |
| 2025 | 0 | 3 | 0 | 2 | 5 |
| 2026 | 1 | 5 | 0 | 2 | 8 |
Every one of the 200 recorded events, 1968–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11221 · Landlord rankings · How grades work · The map · The Mice Map