794 Knickerbocker Avenue
Brooklyn, NY 11207BBL 3-03412-0035Map
Owner of record: Ghaffarian, Maria Doris
794 Knickerbocker Avenue is a walk-up apartment building built in 1920 in Brooklyn, 11207. It has 3 residential units across 3 floors. The owner of record is Ghaffarian, Maria Doris. HPD has recorded 49 housing violations here, most recently on May 5, 2026. 46 of the 49 most recent violations are still open.
- HPD violations
- 49
- DOB violations
- 0
- ECB violations
- 0
- HPD complaints
- 32
What to know
Immediately hazardous issues among recent violations are still open.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
No rent-stabilized units in 2018–2024 tax bills
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 49
- ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
May 5, 2026
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 18, 2025
Open — Info nov sent out - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Jun 10, 2025
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 26, 2024
Open — Info nov sent out - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Apr 10, 2024
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 17, 2023
Open — Info nov sent out - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Mar 23, 2023
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 7, 2022
Open — Info nov sent out - ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Feb 25, 2022
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Feb 25, 2022
Open — Info nov sent out
Show 39 more ↓
- ANon-hazardous
File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.
Apr 9, 2021
Open — Nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Apr 9, 2021
Open — Info nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Oct 30, 2019
Open — Info nov sent out - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Oct 18, 2018
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Nov 10, 2016
Closed — Violation dismissed - IInformation / order
And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.
Oct 9, 2015
Closed — Violation dismissed - CImmediately hazardous
Provide adequate supply of hot water for the fixtures at kitchen and bathroom in the entire apartment located at apt 2, 2nd story, 1st apartment from south at west
Jan 14, 2014 · Apt 2
Open — Invalid certification - CImmediately hazardous
Provide adequate supply of cold water for the fixtures at kitchen and bathroom in the entire apartment located at apt 2, 2nd story, 1st apartment from south at west
Jan 14, 2014 · Apt 2
Open — Invalid certification - CImmediately hazardous
Provide adequate supply of cold water for the fixtures in the entire apartment located at apt 3, 3rd story, apartment at south
Sep 22, 2007 · Apt 3
Open — Nov sent out - CImmediately hazardous
Provide adequate supply of hot water for the fixtures in the entire apartment located at apt 3, 3rd story, apartment at south
Sep 22, 2007 · Apt 3
Open — Nov sent out - BHazardous
Provide adequate lighting at or near the outside of the front entranceway of the building and keep same burning from sunset every day to sunrise on the day following a minimum of 100 watts required
Jul 4, 2007
Open — Nov sent out - BHazardous
Trace and repair the source and abate the nuisance consisting of mold ... at walls and ceiling in the bathroom located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color ,, north wall in the bathroom located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - ANon-hazardous
Paint with light colored paint to the satisfaction of this department ,, 1st door frame from south at west wall in the 1st room from east located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color ,, south wall in the kitchen located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - ANon-hazardous
Paint metal in accordance with dept. regulation ,, 1st door from south at west wall in the kitchen located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - BHazardous
Replace with new the broken or defective window glass pane at south lower sash window in the 2nd room from east located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color ,, ceiling in the 2nd room from east located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - BHazardous
Arrange and make self-closing the doors at apt entrance located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - BHazardous
Abate the nuisance consisting of vermin mice in the entire apartment located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - CImmediately hazardous
Correct the lead-based paint hazard - paint that tested positive for lead content and that is peeling or on a deteriorated subsurface - using work practices set forth in 28 rcny ?11-06(b)(2) east wall in the bathroom located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - CImmediately hazardous
Correct the lead-based paint hazard - paint that tested positive for lead content and that is peeling or on a deteriorated subsurface - using work practices set forth in 28 rcny ?11-06(b)(2) 1st door frame from south at west wall in the kitchen located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - CImmediately hazardous
Correct the lead-based paint hazard - paint that tested positive for lead content and that is peeling or on a deteriorated subsurface - using work practices set forth in 28 rcny ?11-06(b)(2) 1st door frame from south at west wall, 1st window sash from east at south wall in the 2nd room from east located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - CImmediately hazardous
Correct the lead-based paint hazard - paint that tested positive for lead content and that is peeling or on a deteriorated subsurface - using work practices set forth in 28 rcny ?11-06(b)(2) 2nd window frame from north at east wall in the 1st room from east located at apt 1fl, 1st story, 1st apartment from south at west
Jun 25, 2007 · Apt 1FL
Open — Nov sent out - BHazardous
Provide adequate lighting at or near the outside of the front entranceway of the building and keep same burning from sunset every day to sunrise on the day following 100 watts required
Mar 27, 2005
Open — Nov sent out - BHazardous
Provide adequate lighting at or near the outside of the front entranceway of the building and keep same burning from sunset every day to sunrise on the day following 100 watts minimum
Nov 15, 1998
Open — Nov sent out - BHazardous
Section 300, 301, 302, m/d law file plans and obtain a certificate of occupancy to legalize the following alteration or restore premises to prior legal condition 1 sty apt subdivided into 2 apts
Aug 6, 1991
Open — Nov sent out - BHazardous
Discontinue the unlawful use as separately occupied sleeping rooms or, provide unobstructed access to each required means of egress northeast room 3 sty apt 3 prime bristol roomer ramos , section '' ''
Aug 1, 1991 · Apt 3
Open — Nov sent out - BHazardous
M/d law abate the nuisance consisting of front entrance door to bldg locked preventing access to bells 1 sty vestibule
Jul 10, 1991
Open — Nov sent out - BHazardous
Section 300, 301, 302, m/d law file plans and obtain a certificate of occupancy to legalize the following alteration or restore premises to prior legal condition 3 sty apt made into 3 apts
Jul 9, 1991
Open — Nov sent out - BHazardous
Provide an approved and operational smoke detecting device, installed in accordance with department of buildings rules and regulations missing 3 sty apts
Jul 9, 1991
Open — Nov sent out - BHazardous
Discontinue use of rooms for living, disconnect plumbing fixtures and properly seal pipe connections thru out cellar.
May 3, 1991
Open — Nov sent out - BHazardous
Discontinue the unlawful use as separately occupied sleeping rooms or, provide unobstructed access to each required means of egress 1 sty apt 1. located at apt 1
May 3, 1991 · Apt 1
Open — Nov sent out - BHazardous
Discontinue the unlawful use as separately occupied sleeping rooms or, provide unobstructed access to each required means of egress 2 sty apt 2. located at apt 2
May 3, 1991 · Apt 2
Open — Nov sent out - BHazardous
Discontinue the unlawful use as separately occupied sleeping rooms or, provide unobstructed access to each required means of egress 3 sty apt 3. located at apt 3
May 3, 1991 · Apt 3
Open — Nov sent out - BHazardous
Fire egress defective. remove obstructing bars or unlawful gates from at least 1 window or provide approved type gate 1 sty east apt 1. located at apt 1
Mar 3, 1989 · Apt 1
Open — Nov sent out - BHazardous
Discontinue use of rooms for living, disconnect plumbing fixtures and properly seal pipe connections center cellar.
Aug 18, 1988
Open — Nov sent out - BHazardous
Replace with new the missing glass upper sash window 1 sty rear public hall.
Dec 14, 1987
Open — Nov sent out - BHazardous
M/d law abate the nuisance consisting of stuffed furniture mattresses & sofa stored cellar.
Dec 14, 1987
Open — Nov sent out
DOB building violations · 0
No DOB violations on record
ECB violations · 0
No ECB violations on record
Complaints
- Plumbing
Water supply
Jan 13, 2014 · Apt 1
Close - Plumbing
Water supply
Jan 10, 2014 · Apt 1
Close - General
Doors
Nov 15, 2011 · Apt 2FL
Close - General
Mailbox
Nov 15, 2011 · Apt 2FL
Close - General
Doors
Nov 15, 2011 · Apt 2FL
Close - General
Mailbox
Nov 13, 2011 · Apt 2FL
Close - General
Locks
Nov 13, 2011 · Apt 2FL
Close - General
Doors
Nov 13, 2011 · Apt 2FL
Close - General
Doors
Nov 13, 2011 · Apt 2FL
Close - General
Doors
Nov 13, 2011 · Apt 2FL
Close
Show 22 more ↓
- General
Locks
Nov 13, 2011 · Apt 2FL
Close - General
Doors
Nov 13, 2011 · Apt 2FL
Close - General
Locks
Nov 13, 2011 · Apt 2FL
Close - General
Doors
Nov 13, 2011 · Apt 2FL
Close - Nonconst
Rubbish
May 29, 2008 · Apt 3
Close - Appliance
Refrigerator
May 29, 2008 · Apt 3
Close - Appliance
Electric/gas range
May 29, 2008 · Apt 3
Close - Electric
Electric-supply
May 29, 2008 · Apt 3
Close - Nonconst
Vermin
May 29, 2008 · Apt 3
Close - Nonconst
Janitor/super
Apr 2, 2008 · Apt 1FL
Close - General
Doors
Apr 2, 2008 · Apt 1FL
Close - Nonconst
Rubbish
Apr 2, 2008 · Apt 1FL
Close - Nonconst
Rubbish
Apr 2, 2008 · Apt 1FL
Close - Heating
Heat related
Nov 10, 2007 · Apt BLDG
Close - Heating
Heat related
Nov 3, 2007 · Apt BLDG
Close - Plumbing
Water supply
Sep 22, 2007 · Apt 3
Close - Electric
Wiring
Apr 7, 2007 · Apt 1FL
Close - Electric
Lighting
Apr 7, 2007 · Apt 1FL
Close - Heating
Heat related
Apr 7, 2007 · Apt 1FL
Close - Heating
Heat related
Mar 5, 2007 · Apt 1FL
Close - Heating
Heat related
Feb 19, 2007 · Apt BLDG
Close - Heating
Heat related
Jan 9, 2007 · Apt BLDG
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C0)
- Year built
- 1920
- Floors
- 3
- Residential units
- 3
- Building area
- 3,600 ft²
- Lot area
- 2,000 ft²
- Zoning
- R6
- Community board
- 304
- Council district
- 37
- Block / lot
- 3412 / 35
- Assessed value
- $129,840
- Landmark / historic district
- No
HPD registration #350344, last renewed Nov 9, 2018.
Questions about 794 Knickerbocker Avenue
Who owns 794 Knickerbocker Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Ghaffarian, Maria Doris.
Does 794 Knickerbocker Avenue have violations?
Yes. NYC HPD has recorded 49 housing violations at this property.
Is 794 Knickerbocker Avenue rent stabilized?
No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.
When was 794 Knickerbocker Avenue built?
City records list 1920 as the year it was built.
How many apartments are in 794 Knickerbocker Avenue?
It has 3 residential units.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.