804 Knickerbocker Avenue

Brooklyn, NY 11207BBL 3-03412-0040Map

804 Knickerbocker Avenue is a mixed residential and retail building built in 1910 in Brooklyn, 11207. It has 4 residential units across 3 floors. The owner of record is Kappel, Hermann. HPD has recorded 13 housing violations here, most recently on May 5, 2026. 3 of the 13 most recent violations are still open.

HPD violations: 13
DOB violations: 1
ECB violations: 2
HPD complaints: 17

What to know

Concern

2 open Class C

Immediately hazardous issues among recent violations are still open.

Good

Last violation May 5, 2026

Date of the most recent HPD inspection that found a problem.

Good

No unpaid ECB fines

No balance due on recent ECB violations.

Rent stabilization

No rent-stabilized units in 2018–2024 tax bills

Some apartments can still be regulated. Use the rent-stabilized checker or request the rent history from HCR.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 13

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
Closed — Violation dismissed
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
Closed — Violation dismissed
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
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 17, 2023
Closed — Violation dismissed
CImmediately hazardous
Replace or repair the self-closing doors that is missing or defective vestibule door at public hall, 1st story
Jul 29, 2023
Closed — Violation closed
CImmediately hazardous
Post notice, in form approved by the department, stating the name and location of the person designated by the owner to have key to buildings heating system missing at public hall, 1st story
Jul 29, 2023
Open — Nov sent out
ANon-hazardous
§ 53, 187, 231 m/d law and department rules and regulations. provide a shoe properly secured to bottom of string of dropladder at west stack building front at fire escape
Feb 6, 2023
Closed — Violation dismissed
ANon-hazardous
§ 53, 187, 231 m/d law and department rules and regulations. provide a shoe properly secured to bottom of string of dropladder at east stack building front at fire escape
Feb 6, 2023
Closed — Violation dismissed
BHazardous
And dept. rules and regulations. remove the encumbrance obstructing egress from fire escapes consisiting of household items on 2nd story balcony at west stack building front at fire escape
Feb 6, 2023
Open — Nov certified late
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
Closed — Violation dismissed

Show 3 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
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 18, 2018
Closed — Violation dismissed
CImmediately hazardous
Abate the nuisance consisting of rodents ,rats, in the entire apartment located at apt 3r, 3rd story
Feb 20, 2002 · Apt 3R
Open — Nov certified late

DOB building violations · 1

Fail to certify class 1 none
Failure to certify correction on immediately hazardous (class 1) ecb violation
Jan 2, 2013
Dob violation - dismissed

ECB violations · 2

Class - 1
B101. peerless installed w/o permit.
Jul 27, 2012 · Penalty $1,600
Resolve
Class - 2
B254,4a,15,36,32a,50a,b. 50a- no fire damper on fresh air vent at boiler room wall. 50b- fresh air vent to low on bldg needs to be raised and goose necked w/screen.
Jul 27, 2012 · Penalty $500
Resolve

Complaints

Heat/hot water
Apartment only
Feb 3, 2023 · Apt 2L
Close
Heat/hot water
Apartment only
Feb 3, 2023 · Apt 2L
Close
Door/window
Door
Nov 30, 2022 · Apt BLDG
Close
Heat/hot water
Apartment only
Feb 24, 2022 · Apt 2L
Close
Heating
Heat related
Nov 14, 2013 · Apt 2R
Close
Heating
Heat related
Dec 26, 2012 · Apt NA
Close
Heating
Heat related
Dec 23, 2012 · Apt 2R
Close
Heating
Heat related
Dec 8, 2010 · Apt 2R
Close
Heating
Heat related
Mar 28, 2005 · Apt 3R
Close
Heating
Heat related
Dec 5, 2003 · Apt 3R
Close

Show 7 more ↓

Heating
Radiator
Dec 5, 2003 · Apt 3R
Close
General
Cabinet
Aug 30, 2003 · Apt 3R
Close
Nonconst
Vermin
Jul 30, 2003 · Apt 3R
Close
Nonconst
Vermin
Jul 30, 2003 · Apt 3R
Close
Appliance
Refrigerator
Jul 30, 2003 · Apt 3R
Close
Electric
Lighting
Jul 30, 2003 · Apt 3R
Close
Heating
Heat related
Feb 25, 2003 · Apt 3R
Close

Sales history

No recorded sales in our data

Sales come from the NYC Department of Finance rolling sales file.

Building details

Building type: Mixed residential and retail building (S4)
Year built: 1910
Floors: 3
Residential units: 4
Building area: 5,346 ft²
Lot area: 2,200 ft²
Zoning: R6
Community board: 304
Council district: 37
Block / lot: 3412 / 40
Assessed value: $490,050
Landmark / historic district: No

HPD registration #328640, last renewed Aug 28, 2025.

Questions about 804 Knickerbocker Avenue

Who owns 804 Knickerbocker Avenue?

The owner of record in NYC Department of City Planning PLUTO data is Kappel, Hermann.

Does 804 Knickerbocker Avenue have violations?

Yes. NYC HPD has recorded 13 housing violations at this property.

Is 804 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 804 Knickerbocker Avenue built?

City records list 1910 as the year it was built.

How many apartments are in 804 Knickerbocker Avenue?

It has 4 residential units and 5 units in total.

Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.