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Building report

146 Knickerbocker Avenue · Brooklyn · BBL 3031580027 · generated 2026-10-20 · FREE

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Where the penalty points come from

ComponentWhat it coversPoints
Housing codeHPD violations by class, complaints, emergency repairs, litigation, vacate orders, AEP3
Structural & safetyDOB violations, ECB/OATH violations by class0
PestsBedbug filings, failed rodent inspections, rodent 311s9
DisplacementMarshal evictions executed0
GRADE C

A meaningful record of code violations or complaints relative to its peers. More recorded distress than 89% of 1-5-unit residential buildings citywide. The citywide median for 1-5-unit residential buildings is 0 penalty points per 10 units; this building carries 24. In ZIP 11237, 39% of residential buildings hold an A and 15% grade D or F. How grades work

this building
A
C

Among 699,345 1-5-unit residential buildings citywide · left is less recorded distress, right is more

Open with the city right now

No current HPD flags in the latest weekly snapshot: no open violations, no pending litigation, no active vacate orders, and not in the Alternative Enforcement Program.

Patterns

No heat or hot-water complaints in the last three years.

No bedbug-infested units reported in the last three years of filings.

What 311 hears from this address

5 service requests in the last three years. Most common: Sewer (2) · Blocked Driveway (1) · Street Condition (1) · Graffiti (1).

Filed construction activity

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.

Rent-stabilization signals

YesBuilt before 1974 (1931)
NoSix or more residential units (5)
No421-a / J-51 tax benefit on the current tax roll

1 of 3 signals present. Only a partial profile — stabilization is possible but less likely. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).

Registered with HPD — the names behind the building

Registered owner(s)HONG Q TANG
Managing agentXIA XUN JIANG
Last registered2025-08-31

as filed by the owner in the building's HPD registration

What the city thinks it's worth

Tax yearCity market valueAssessed value
2025$1,140,800 $513,360
2026$948,000 $426,600
2027$1,110,000 $499,500

The city's market estimate has fallen 3% between tax years 2025 and 2027.

Restaurants in this building

RestaurantCuisineGradeNotes
Bites & SipsCoffee/TeaA—

Report to 311: Food poisoning · Food safety complaint

1 restaurant · 0 with mice evidence · See them on the Mice Map

Flood exposure

Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).

Hurricane evacuation zone 6 of 6 — zone 1 evacuates first.

Not in the city's stormwater (cloudburst) flood maps under any modeled scenario.

1 street-flooding or sewer-backup complaints at this address since 2025 (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.

Getting around

SubwayMorgan Av — L · 0.2 mi straight-line (about a 6-minute walk) · station accessibility: none
BusNearest boarding stop: Flushing Av / Knickerbocker Av — B57 · 200 ft
Citi BikeKnickerbocker Ave & George St · 50 ft · station location as of 2026-09-23; live availability
School zones (2024–25 map)Elementary: P.S. 145 Andrew Jackson
Middle: 347, 349. 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.

Report a problem to 311

146 Knickerbocker Avenue

Heat or hot waterHeat or hot water
Apartment maintenanceApartment maintenance
Bed bugsBed bugs
Residential pestsResidential pests
Rats or miceRats or mice
Food poisoningFood poisoning
Food safety complaintFood safety complaint
Anything elseAnything else

5 311 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.

Sales, deeds & mortgages

Most recent mortgage recorded against this lot: $1,225,000 on 2019-07-31 (lender: Flushing Bank). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.

DateRecordAmountPer res. unit
2019-07-31AL&R $1,225,000 — from TANG, HONG QING to FLUSHING BANK $1,225,000
2019-07-31Mortgage $1,225,000 — from TANG, HONG QING to FLUSHING BANK $1,225,000
2003-12-16AL&R $360,000 — from TANG, HONG QING to FLUSHING SAVINGS BANK, FSB $360,000
2003-12-16Mortgage $360,000 — from TANG, HONG QING to FLUSHING SAVINGS BANK, FSB $360,000
2003-12-16DEEDO $555,000 — from RODRIGUEZ, ELSA; RODRIGUEZ, EMILIO to TANG, HONG QING $555,000
2002-03-25Mortgage $362,650 — from RODRIGUEZ, EMILIO; RODRIGUEZ, ELSA to FIRST RESIDENTIAL SERVICES OF NEW YORK $362,650
1987-03-17Mortgage $9,300 — from GONZALES, MOISES; GONZALES, RENE to JANUS FIN. CONSULTANTS $9,300
1983-01-12Mortgage $6,000 — from GONZALEZ, MOISES to RODRIGUEZ, ROBERTO $6,000

Ten-year activity

20100
2017
2018
13
2019
2020
2021
2022
2023
2024
2025
2026
EnforcementHousing & tenantsOwnership & moneyHealth & systems
Show as table
YearEnforcementHousing & tenantsOwnership & moneyHealth & systemsTotal
201700033
201802226
2019172313
202004026
202104015
202206039
2023150511
202402024
202504048
202604037
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The last 12 months — 7 records

DateRecord
2026-10-06Rodent inspection: Passed
2026-08-23311: Graffiti — Graffiti
2026-06-08Bedbug filing: 0 infested units
2026-05-18Rodent inspection: Passed
2026-05-05HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2026-04-15Rodent inspection: Failed for Rat Activity and Other Reason
2026-04-02311: Sewer — Catch Basin Sunken/Damaged/Raised (SC1)

The full timeline

2026
2026-10-06Rodent inspection: Passed
2026-08-23311: Graffiti — Graffiti
2026-06-08Bedbug filing: 0 infested units
2026-05-18Rodent inspection: Passed
2026-05-05HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2026-04-15Rodent inspection: Failed for Rat Activity and Other Reason
2026-04-02311: Sewer — Catch Basin Sunken/Damaged/Raised (SC1)
2025
2025-10-09Rodent inspection: Passed
2025-09-08311: Street Condition — Pothole
2025-07-28Bedbug filing: 0 infested units
2025-07-22Restaurant inspection: BITES & SIPS — grade A
2025-07-14311: Sewer — Street Flooding (SJ)
2025-06-10HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2025-05-21Rodent inspection: Failed for Rat Activity
2025-04-07Rodent inspection: Failed for Rat Activity
2024
2024-10-07Rodent inspection: Passed
2024-04-26Bedbug filing: 0 infested units
2024-04-10HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2024-04-02Rodent inspection: Passed
2023
2023-12-06311: Blocked Driveway — No Access
2023-10-16Rodent inspection: Passed
2023-10-06Restaurant inspection: BITES & SIPS — grade A
2023-08-03Restaurant inspection: BITES & SIPS
2023-07-18311: General Construction/Plumbing — Curb Cut/Driveway/Carport - Illegal
2023-07-18DOB complaint, category ?
2023-06-22Rodent inspection: Passed
2023-04-16Bedbug filing: 0 infested units
2023-04-14Rodent inspection: Failed for Rat Activity
2023-03-23HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2023-03-12311: Noise - Commercial — Loud Music/Party
2022
2022-11-15311: Illegal Parking — Blocked Bike Lane
2022-10-13Rodent inspection: Passed
2022-09-25311: Noise - Commercial — Loud Music/Party
2022-07-10311: Noise - Commercial — Car/Truck Music
2022-05-24Rodent inspection: Failed for Rat Activity
2022-04-20Rodent inspection: Failed for Rat Activity
2022-03-13Bedbug filing: 0 infested units
2022-02-25HPD class I: §27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE
2022-02-25HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2021
2021-07-25311: Noise - Street/Sidewalk — Loud Music/Party
2021-04-23Rodent inspection: Passed
2021-04-23Bedbug filing: 0 infested units
2021-04-11311: Noise - Residential — Loud Music/Party
2021-04-09HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2020
2020-12-24Rodent inspection: Passed
2020-11-28311: Noise - Commercial — Loud Music/Party
2020-11-28311: Noise - Commercial — Loud Music/Party
2020-11-23311: Noise - Commercial — Loud Music/Party
2020-11-21311: Noise - Commercial — Loud Music/Party
2020-09-14Rodent inspection: Failed for Rat Activity and Other Reason
2019
2019-12-07311: Blocked Driveway — No Access
2019-11-03311: Blocked Driveway — No Access
2019-10-16Rodent inspection: Passed
2019-08-21311: General Construction/Plumbing — Curb Cut/Driveway/Carport - Illegal
2019-08-06311: General Construction/Plumbing — Curb Cut/Driveway/Carport - Illegal
2019-08-06DOB complaint, category ?
2019-07-31AL&R $1,225,000 — from TANG, HONG QING to FLUSHING BANK$1,225,000
2019-07-31Mortgage $1,225,000 — from TANG, HONG QING to FLUSHING BANK$1,225,000
2019-07-18311: Curb Condition — Defacement
2019-05-15Rodent inspection: Failed for Rat Activity
2019-04-19311: Graffiti — Graffiti
2019-04-01Rodent inspection: Failed for Other Reason
2019-01-06311: Street Condition — Pothole
2018
2018-10-11Rodent inspection: Passed
2018-10-09TL&R — from FLUSHING SAVINGS BANK, FSB to QING TANG, HONG
2018-10-09Mortgage satisfied — from QING TANG, HONG to FLUSHING SAVINGS BANK, FSB
2018-09-13311: Graffiti — Graffiti
2018-08-15311: Noise - Residential — Banging/Pounding
2018-04-10Rodent inspection: Passed
2017
2017-12-01Rodent inspection: Passed
2017-09-28Rodent inspection: Passed
2017-08-24Rodent inspection: Failed for Rat Activity
2016
2016-11-10HPD class I: §27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE
2016-08-18Rodent inspection: Bait applied
2016-08-12Rodent inspection: Bait applied
2016-08-05Rodent inspection: Bait applied
2016-07-29Rodent inspection: Bait applied
2016-06-28Rodent inspection: Failed for Rat Activity and Other Reason
2016-05-05311: Street Condition — Pothole
2016-04-26Rodent inspection: Failed for Rat Activity and Other Reason
2016-04-18311: Rodent — Rat Sighting
2015
2015-09-13311: Street Condition — Pothole
2015-06-06311: Food Poisoning — 1 or 2
2015-04-04311: Overgrown Tree/Branches — Hitting Building
2015-02-27311: Noise - Commercial — Loud Music/Party
2015-02-05311: Noise - Commercial — Loud Music/Party
2015-01-29311: Noise - Commercial — Loud Music/Party
2015-01-01311: Noise - Residential — Loud Music/Party
2014
2014-06-30Rodent inspection: Passed
2014-05-15311: Overgrown Tree/Branches — Hitting Building
2014-01-24Permit PL — ISSUED
2013
2013-11-22311: Noise - Commercial — Loud Music/Party
2013-11-04Rodent inspection: Passed
2013-09-20Certificate of occupancy Final
2012
2012-04-17Rodent inspection: Passed
2011
2011-07-30Rodent inspection: Monitoring visit
2011-07-23Rodent inspection: Bait applied
2011-05-29Rodent inspection: Bait applied
2011-05-06Rodent inspection: Failed for Rat Activity and Other Reason
2011-03-31Rodent inspection: Failed for Rat Activity and Other Reason
2010
2010-10-27Rodent inspection: Failed for Rat Activity
2010-09-13Rodent inspection: Failed for Rat Activity and Other Reason
2010-07-29Permit PL — ISSUED
2010-07-29Permit EW — ISSUED
2010-06-11Job filed: INSTALL BOILERS AND HOT WATER HEATERS IN CELLAR. NO CHANGE IN EGRESS, OCCUPANCY OR USE IS INVOLVED UNDER THIS APPLICATION.$20,000
2010-06-11Job filed: INSTALL BOILERS AND HOT WATER HEATERS IN CELLAR. NO CHANGE IN EGRESS, OCCUPANCY OR USE IS INVOLVED UNDER THIS APPLICATION.$20,000
2010-03-30311: HEATING — HEAT
2010-03-30311: GENERAL CONSTRUCTION — WINDOWS
2010-03-30Tenant complaint: HEATING — HEAT RELATED
2010-03-30Tenant complaint: GENERAL — WINDOWS
2010-01-02311: HEATING — HEAT
2010-01-02Tenant complaint: HEATING — HEAT RELATED
2009
2009-11-04Tenant complaint: HEATING — HEAT RELATED
2009-10-17Tenant complaint: HEATING — HEAT RELATED
2009-10-16Tenant complaint: NONCONST — VERMIN
2009-10-16Tenant complaint: HEATING — HEAT RELATED
2008
2008-11-14DOB complaint, category ?
2008-09-18Tenant complaint: PAINT/PLASTER — WALL
2008-09-18Tenant complaint: NONCONST — VERMIN
2008-09-18Tenant complaint: NONCONST — VERMIN
2008-09-18Tenant complaint: NONCONST — VERMIN
2008-09-18Tenant complaint: GENERAL — FIRE-ESCAPE
2008-09-18Tenant complaint: PAINT/PLASTER — WALL
2008-08-06DOB complaint, category ?
2008-08-06DOB complaint, category ?
2008-05-15Permit PL — ISSUED
2008-05-12Permit AL — ISSUED
2008-04-18Job filed: CONVERT EXISTING GARAGE TO BE HEALTH CARE CENTER AT 1ST FL. OBTAIN NEW CERTIFICATE OF OCCUPANCY.$20,000
2007
2007-10-29Tenant complaint: NONCONST — CARBON MONOXIDE
2007-10-28Tenant complaint: HEATING — HEAT RELATED
2007-09-09DOB complaint, category ?
2007-07-09Tenant complaint: PAINT/PLASTER — WALL
2007-07-09Tenant complaint: NONCONST — VERMIN
2007-07-09Tenant complaint: PAINT/PLASTER — WALL
2007-07-09Tenant complaint: CONSTRUCTION — RAIN LEADER
2007-04-04Tenant complaint: HEATING — HEAT RELATED
2007-04-04Tenant complaint: NONCONST — VERMIN
2007-04-04Tenant complaint: NONCONST — VERMIN
2007-03-15Tenant complaint: HEATING — HEAT RELATED
2007-03-13City emergency repair (HWO): apt 3r) at kitchen, livingroom, small and main bedroom install window guard and stops$248
2007-01-25City emergency repair (OMO): as per rc #2007001232501 (enviro-probe, inc.), perform total lead analysis of 08 dust wipe sample(s) via environmental p$24
2007-01-08Tenant complaint: GENERAL — CERAMIC-TILE
2007-01-08Tenant complaint: PLUMBING — BASIN/SINK
2007-01-08Tenant complaint: PAINT/PLASTER — DOOR/FRAME
2007-01-08Tenant complaint: PAINT/PLASTER — WALL
2006
2006-12-18HPD litigation: Tenant Action
2006-12-04Tenant complaint: ELECTRIC — WIRING
2006-12-04Tenant complaint: GENERAL — MOLD
2006-12-04Tenant complaint: NONCONST — VERMIN
2006-12-04Tenant complaint: GENERAL — FLOOR
2006-12-04Tenant complaint: PAINT/PLASTER — WALL
2006-12-04Tenant complaint: PAINT/PLASTER — WALL
2006-12-04Tenant complaint: GENERAL — FLOOR
2006-12-04Tenant complaint: GENERAL — WINDOWS
2006-12-04Tenant complaint: ELECTRIC — WIRING
2006-12-04Tenant complaint: PLUMBING — BASIN/SINK
2006-11-27HPD litigation: Tenant Action
2006-11-15Tenant complaint: PAINT/PLASTER — WALL
2006-11-15Tenant complaint: NONCONST — VERMIN
2006-11-15Tenant complaint: GENERAL — FLOOR
2006-11-04Tenant complaint: HEATING — HEAT RELATED
2006-11-03Tenant complaint: HEATING — HEAT RELATED
2006-10-25City emergency repair (OMO): apt 2l) at 2nd bedroom remove broken window pane of thermal window and repair with new glass and install new window guar$720
2005
2005-12-27City emergency repair (HWO): apartment#2l: reinstall window guards and stops through out.$41
2005-11-18Tenant complaint: HEATING — HEAT RELATED
2005-10-29Tenant complaint: PLUMBING — WATER-LEAKS
2005-10-29Tenant complaint: HEATING — HEAT RELATED
2005-10-26Tenant complaint: HEATING — HEAT RELATED
2005-10-25Tenant complaint: HEATING — HEAT RELATED
2005-10-25Tenant complaint: HEATING — HEAT RELATED
2005-08-26Permit EW — ISSUED
2005-08-04Job filed: FP 2,000 PL 1,000 INSTALL FIRE SUPPRESSION SYS ONLY,NO CHANGE IN USE EGR ES OR OCC$3,000
2005-08-04Job filed: FP 2,000 PL 1,000 INSTALL FIRE SUPPRESSION SYS ONLY,NO CHANGE IN USE EGR ES OR OCC$3,000
2004
2004-10-23Tenant complaint: HEATING — HEAT RELATED
2004-10-19Tenant complaint: HEATING — HEAT RELATED
2004-06-13Tenant complaint: PAINT/PLASTER — WALL
2004-06-13DOB complaint, category ?
2004-06-13ECB Non-Hazardous violation: FAILURE TO MAINTAIN BLDG (EXTERIOR) NOTED; FRONT FACADE STUCCO (CONCRETE) HAS HORIZONTAL CRACK APPROX 10 TO 12" IN LENGTH ABOVE CO$180
2004-05-18Mortgage satisfied — from GAROFALO, GASPER G; GAROFALO, MARIE to RODRIGUEZ, ROBERTO
2004-05-09Tenant complaint: PLUMBING — WATER SUPPLY
2004-02-18Mortgage satisfied — from RODRIGUEZ, ELSA; RODRIGUEZ, EMILIO to FIRST RESIDENTIAL SERVICES OF NEW YORK
2004-02-13DOB violation LL6291:
2004-01-14Permit EW — ISSUED
2003
2003-12-30Job filed: Repair fire damaged in 2nd floor apartment. See attached plans for details on scope of work. No change of use, egress or occupancy under this applicat$5,000
2003-12-30Job filed: Repair fire damaged in 2nd floor apartment. See attached plans for details on scope of work. No change of use, egress or occupancy under this applicat$5,000
2003-12-16AL&R $360,000 — from TANG, HONG QING to FLUSHING SAVINGS BANK, FSB$360,000
2003-12-16Mortgage $360,000 — from TANG, HONG QING to FLUSHING SAVINGS BANK, FSB$360,000
2003-12-16DEEDO $555,000 — from RODRIGUEZ, ELSA; RODRIGUEZ, EMILIO to TANG, HONG QING$555,000
2003-08-05Permit PL — ISSUED
2003-08-05Permit PL — ISSUED
2003-07-31Mortgage assigned — from FIRST RESIDENTIAL SERVICES OF NEW YORK to M&T MORTGAGE CORPORATION
2003-07-09Permit EW — ISSUED
2003-06-19Job filed: INSTALL FIRE SUPPRESSION SYSTEM ONLY. N O CHANGE IN USE, EGRESS OR OCCU ANCY.$2,000
2003-04-03Tenant complaint: NONCONST — SMOKE-FUMES
2003-03-21Tenant complaint: NONCONST — SMOKE-FUMES
2003-03-19DOB violation LL6291:
2003-02-26Tenant complaint: NONCONST — SMOKE-FUMES
2003-01-02Permit EW — ISSUED
2002
2002-12-18Job filed: Replace fire damaged roof rafters and replace roof wood sheating and roofing, repair water damaged walls and ceiling in apartment. No change in egress$50,000
2002-08-12DOB violation C:
2002-08-02DOB complaint, category ?
2002-03-25Deed — from GONZALEZ, RENE to RODRIGUEZ, EMILIO; RODRIGUEZ, ELSA
2002-03-25Mortgage $362,650 — from RODRIGUEZ, EMILIO; RODRIGUEZ, ELSA to FIRST RESIDENTIAL SERVICES OF NEW YORK$362,650
1996
1996-01-22ECB Non-Hazardous violation: 19B 49 REPLACE SAFETY VALVE WIT A. S ME TYPE INSTALL CLD WATERELIEF VALVE ON COIL
1995
1995-08-29DOB violation LL6291:
1994
1994-06-01DOB violation LL6291:
1993
1993-08-16DOB violation LL6291:
1993-06-01DOB violation LL6291:
1992
1992-02-04Mortgage satisfied — from GONZALES, RENE; GONZALES, MOISES to JANUS FIN'L CONSULTANTS
1989
1989-08-31Deed — from GONZALEZ, MOISES to GONZALEZ, RENE
1987
1987-03-17Mortgage assigned — from JANUS FINAN.CONSULTANTS to EMPIRE OF AMERICA FSB
1987-03-17Mortgage $9,300 — from GONZALES, MOISES; GONZALES, RENE to JANUS FIN. CONSULTANTS$9,300
1985
1985-01-16Mortgage satisfied — from GONZALEZ, MOISES to RODRIGUEZ, ROBERTO
1983
1983-01-12Deed — from RODRIGUEZ, ROBERTO to GONZALEZ, MOISES
1983-01-12Mortgage $6,000 — from GONZALEZ, MOISES to RODRIGUEZ, ROBERTO$6,000
1980
1980-01-02Deed — from GAROFALO MARIE; GAROFALO GASPER G to RODRIGUEZ ROBERTO
1980-01-02Mortgage — from RODRIGUEZ ROBERTO to GAROFALO GASPER G; GAROFALO MARIE

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