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Building and Landlord Data Analysis Report

4200 Avenue K, Brooklyn, NY 11210

12
DOB Complaints
297
311 Housing Calls
375
Housing Violations
1
Permits

Risk Assessment

10
High Risk

This building is in the riskiest 10% of buildings in NYC with significant maintenance issues.

Our AI predicts there is a 10% chance of no major maintenance issues.
Augrented Insights Report for 4200 Avenue K

The 6-story residential building at 4200 Avenue K in Flatlands, owned by Ari Mossberg, was constructed in 1955 and contains 108 units. Recent months have shown recurring maintenance issues, particularly related to plumbing and heating systems, with multiple complaints about toilet problems and heat/hot water outages affecting either individual units or the entire building. Of particular concern is a recent HPD inspection in June 2025 that resulted in violations for mold and unsanitary conditions. The building has also experienced electrical issues, including power outages documented in April 2025.

The property has several open violations and ongoing maintenance issues documented through various agencies. The Department of Buildings (DOB) records indicate active concerns regarding an illegal conversion and elevator maintenance as of mid-2025. Previous elevator-related complaints have been persistent, with multiple violations and inspections from 2023-2025. The building's heating system has been a recurring problem, with an Environmental Control Board (ECB) violation from October 2024 citing defective equipment and an oil leak that remains active with a penalty balance due.

Multiple housing maintenance violations were documented in December 2024, including pest infestations (mice and roaches) in apartment 3B, water leaks in apartment 4HH, and various repair issues in apartment 4G. The building's management has faced ongoing scrutiny for not certifying the correction of immediately hazardous violations, with active DOB violations from 2023 and 2025. Recent inspections have shown some progress, including a passed rodent inspection in 2022 and no bedbug infestations reported in recent filings from 2022-2023. However, the pattern of repeated service requests and unresolved violations suggests persistent maintenance challenges. The property is also subject to active ECB violations regarding parking structure reporting requirements and safety concerns, with penalties totaling over $15,000.

Last updated: July 27, 2025
This report is created with AI and based on the most recent 10 data items in each category. Full reports with 50+ data points are available to subscribers.

4200 Avenue K Report Contents

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4200 Avenue K Building Overview

Renter Risk Rating

This building is in the safest 30% of buildings in Flatlands.

Building Characteristics

Total units 108
Year built 1955
Total area 96000 sq ft
Floors 6
Tax Abatements None
Building Class HEREAFTER ERECTED CLASS A
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Key Building Statistics

12
DOB Complaints
Complaints filed with the Department of Buildings in the last 7 years.
375
Housing Violations
Class B & C housing maintenance code violations.
297
311 Housing Calls
Housing-related 311 service requests in the last 7 years.
15
Work Orders
Repair orders issued by city agencies.
10
ECB Violations
Environmental Control Board violations on record.
5
Evictions
Evictions executed by city marshalls.
2
Rodent Inspections
Rodent inspections conducted by DOHMH.
1
Building Permits
Permits issued by DOB in the last 7 years.

Included Addresses

  • 4124 Avenue K, New York, NY 11210
  • 4126 Avenue K, New York, NY 11210
  • 4128 Avenue K, New York, NY 11210
  • 4130 Avenue K, New York, NY 11210
  • 4132 Avenue K, New York, NY 11210
  • 4134 Avenue K, New York, NY 11210
  • 4136 Avenue K, New York, NY 11210
  • 4138 Avenue K, New York, NY 11210
  • 4140 Avenue K, New York, NY 11210
  • 4142 Avenue K, New York, NY 11210
  • 4144 Avenue K, New York, NY 11210
  • 4146 Avenue K, New York, NY 11210
  • 4148 Avenue K, New York, NY 11210
  • 4150 Avenue K, New York, NY 11210
  • 4152 Avenue K, New York, NY 11210
  • 4154 Avenue K, New York, NY 11210
  • 4156 Avenue K, New York, NY 11210
  • 4158 Avenue K, New York, NY 11210
  • 4160 Avenue K, New York, NY 11210
  • 4162 Avenue K, New York, NY 11210
  • 4164 Avenue K, New York, NY 11210
  • 4166 Avenue K, New York, NY 11210
  • 4168 Avenue K, New York, NY 11210
  • 4170 Avenue K, New York, NY 11210
  • 4172 Avenue K, New York, NY 11210
  • 4174 Avenue K, New York, NY 11210
  • 4176 Avenue K, New York, NY 11210
  • 4178 Avenue K, New York, NY 11210
  • 4180 Avenue K, New York, NY 11210
  • 4182 Avenue K, New York, NY 11210
  • 4184 Avenue K, New York, NY 11210
  • 4186 Avenue K, New York, NY 11210
  • 4188 Avenue K, New York, NY 11210
  • 4190 Avenue K, New York, NY 11210
  • 4192 Avenue K, New York, NY 11210
  • 4194 Avenue K, New York, NY 11210
  • 4196 Avenue K, New York, NY 11210
  • 4198 Avenue K, New York, NY 11210

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4200 Avenue K Landlord Information

HPD Registration Contacts

Contact data is from NYC HPD building registration.

RoleNameAddress

Landlord Portfolio

Other NYC buildings registered to this landlord.

AddressUnitsCode ViolationsRisk Rating

Landlord Court Records

NYC housing court and civil court records. Name matching only; verify parties are actually the owners by reviewing the case files!

Date FiledCase TitleCourtLink
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4200 Avenue K Rent Control Status

Year Built
Built before 1974
Units
More than 6 units
RGB Registration
Registered
Tax Abatement
None found
Year BuiltUnitsRGB RegistrationTax Abatement
Before 1974 >6 units Registered None

Full Building Data for 4200 Avenue K

Housing Maintenance Code Complaints

This table shows complaints to 311 related to potential NYC Housing Maintenance Code (HMC) for 4200 Avenue K. These complaints are related to conditions such as lack of heat, hot water, mold, pests, and other habitability issues. Class B and C violations are the most serious and may indicate significant problems with building maintenance or safety.

Date ReceivedSttatus DateCategoryTypeStatus
2025-06-232025-07-12Water Leak-Slow LeakNon EmergencyCLOSE
2025-06-112025-06-14Plumbing-ToiletEmergencyCLOSE
2025-06-112025-06-14Unsanitary Condition-MoldEmergencyCLOSE
2025-06-112025-06-14Plumbing-ToiletEmergencyCLOSE
2025-05-242025-05-27Heat/hot Water-Entire BuildingEmergencyCLOSE
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Housing Maintenance Code Violations

This table shows violations of the NYC Housing Maintenance Code (HMC) issued by HPD for 4200 Avenue K. These violations are related to conditions such as lack of heat, hot water, mold, pests, and other habitability issues. Class B and C violations are the most serious and may indicate significant problems with building maintenance or safety.

Inspection DateClassStatusStatus DateApartmentNOV DescriptionCertified Date
2024-12-15COpenNone3BHMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM NORTH AT EASTNone
2024-12-15BCloseNone4HH§ 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT CEILING IN THE 1st ROOM FROM EAST LOCATED AT APT 4HH, 4th STORY, 1st APARTMENT FROM NORTH AT EASTNone
2024-12-15COpenNone3BHMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM NORTH AT EASTNone
2024-12-15BCloseNone4HH§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE 1st ROOM FROM EAST LOCATED AT APT 4HH, 4th STORY, 1st APARTMENT FROM NORTH AT EASTNone
2024-12-15BOpenNone3B§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR NORTH WALL IN THE 1st ROOM FROM EAST LOCATED AT APT 3B, 3rd STORY, 1st APARTMENT FROM NORTH AT EASTNone
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311 Service Requests

Service requests made to 311 for 4200 Avenue K. Data from NYC 311.

Created DateTypeDescriptionStatusAgencyResolution
2025-06-11 09:15PLUMBINGTOILETClosedHPD
2025-06-11 09:15PLUMBINGTOILETClosedHPD
2025-06-11 09:15UNSANITARY CONDITIONMOLDClosedHPD
2025-05-25 13:20HEAT/HOT WATERENTIRE BUILDINGClosedHPD
2025-05-25 08:13HEAT/HOT WATERENTIRE BUILDINGClosedHPD
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DOB Complaints

Department of Buildings complaints regarding 4200 Avenue K.

Complaint #FiledStatusCategoryInspection DateDisposition
2025-06-23ACTIVEIllegal Conversion2025-07-16Inspector Unable To Gain Access – 1st Attempt Made (2025-07-17)
2025-03-29ACTIVEElevator: Multiple Devices on Property
39868332024-12-06CLOSEDElevator: Multiple Devices on Property2025-02-19Oath Violation Served (2025-02-19)
39809732024-10-17CLOSEDBoiler: Defective/Inoperative/No Permit2024-10-21Oath Violation Served (2024-10-21)
39216882023-08-07CLOSEDSafety Net/Guard Rail – Damaged/Inadequate/None (6-stories 75FT or Less)2023-08-07No Violation Warranted For Complaint At Time Of Inspection (2023-08-07)
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DOB Violations

Department of Buildings violations regarding 4200 Avenue K.

Date IssuedCategoryDescriptionStatusComments
2025-03-05V-DOB VIOLATION - ACTIVEFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION
2023-10-04V-DOB VIOLATION - ACTIVEFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION
2020-10-14V*-DOB VIOLATION - DISMISSEDFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION000810 PAID INVOICE 904313512021-05-11
2020-09-02V*-DOB VIOLATION - DISMISSEDFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION000810 PAID INVOICE 904313462021-05-11
2020-05-28V*-DOB VIOLATION - DISMISSEDCYCLE 9 UNSAFE REPORT FILEDCIANOW CRM Violation Dismissed2022-08-05
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Indoor Environment Complaints (DOHMH)

The table below shows indoor environment complaints received regarding the conditions at 4200 Avenue K. The information includes the date, type, description, and status of each complaint. The data is sourced from DOHMH/311.

DateTypeDescriptionStatus
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Bedbug Infestations

The table below shows the bedbug reports filed by the landlord for 4200 Avenue K. The information includes the file date, infested units, eradicated units, re-infested units, filing start date, and filing end date. The data is sourced from DOHMH. Landlords are required to file these reports; missing data may indicate non-compliance.

File DateInfested UnitsEradicated UnitsRe-infested UnitsFiling Start DateFiling End Date
2023-12-180002022-11-012023-10-31
2023-06-200002021-11-012022-10-31
2022-07-210002020-11-012021-10-31
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Rodent Inspections

Recent rodent inspection results for 4200 Avenue K. Data from NYC DOHMH.

DateTypeResult
2022-06-21InitialPassed
2010-11-04ComplianceFailed for Other R
2010-10-27InitialRat Activity
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HPD Litigation Explanation

The table below shows the HPD litigation records for 4200 Avenue K. The information includes the open date, case type, status, judgement, penalty and whether harassment was found. The data is sourced from HPD.

Source: HPD
Open DateCase TypeStatusJudgementPenaltyHarassment found
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OATH Cases Explanation

The table below shows the Office of Administrative Trials and Hearings cases for 4200 Avenue K. The information includes the date, agency, respondent, charge, result, penalty, and status. The data is sourced from OATH.

Source: Office of Administrative Trials and Hearings (OATH)
DateAgencyRespondentChargeResultPenaltyStatus
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ECB Violations

Environmental Control Board violations for 4200 Avenue K. Data from ECB.

DateNumberRespondentDescriptionStatusPenaltyBalance Due
2024-10-2139128027XKF 4200 AVENUE K EQUITIESFEDERAL FST-175 BOILER=HEAT COMPUTER DEFECTIVE+OIL LEAK@BURNER+@WALL ÝBURIED TANK¨VENT LIMITER MISSING@GAS PIOLIT REGULATOR+BODY DRAIN PIPES MISSING@SAFETY VALVES;CORRECT VIOLATION+SUBMIT CERTIFICATE OF CORRECTACTIVE3125.03075.0
2024-10-0137031339LKF 4200 AVENUE K EQUITIESFAILURE TO SUBMIT THE REQUIRED PARKING STRUCTURE INITIAL OBSERVATION REPORT FOR AN EXISTING PARKING STRUCTURE OR A PERIODIC INSPECTION OF A PARKING STRUCTURE(PIPS) REPORT DOCUMENTING THE CONDITIONS OF PSID#B000ACTIVE12500.012500.0
2023-03-0739080860X4200 AVENUE K EQUITIESCEASE USE ITEM: INOPERATIVE ZONE LOCK RESTRICTOR CLASS 2 ITEMS: WORN CAB MIRROR. PROVIDE DESIGNATED LOBBY BRAILLE TAGS. DAMAGED 1ST FLOOR IN CASE OF FIRE SIGN. CKLEAN TAIL ROPE FOR PROPER INSPECTION. WORN CAB SACTIVE6250.06250.0
2020-07-1535538538Y4200 AVE K EQUITIESFAILURE TO TAKE REQUIRED MEASURES TO PROTECT PUBLIC FROM UNSAFE FACADE.NOTED:ON 5/22/2020 A FISP3 UNSAFE NOTIFICATION WAS SUBMITTED TO THE DOB AND AS OF 7/15/2020 NO SAFETY MEASURES ARE IN PLACE TO PROTECT PUBLRESOLVE12500.00.0
2020-07-1535538539X4200 AVE K EQUITIESFAILURE TO MAINTAIN EXTERIOR BUILDING FACADE/WALLS AND APPURTENANCES.WELEVATION EXPO#1:OBSERVED INADEQUATELY INSTALLED A/C UNITS AT MULTIPLELOCATIONS.N ELEVATION,EXPO#2 OBSERVED INADEQUATELY INSTALLED A/C UNITSRESOLVE3125.00.0
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Alternative Enforcement Program (AEP) Explanation

The table below shows the Alternative Enforcement Program (AEP) records for 4200 Avenue K. The information includes the start date, start violations, discharge date, and status. The data is sourced from HPD.

Source: Department of Housing Preservation and Development (HPD)
Start DateStart ViolationsDischarge DateStatus
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Vacate Orders Explanation

The table below shows the vacate orders for 4200 Avenue K. The information includes the effective date, rescinded date, reason, type, and units. The data is sourced from DOB.

Source: Department of Buildings (DOB)
Effective DateRescinded DateReasonTypeUnits
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Work Orders Explanation

The table below shows the work orders for 4200 Avenue K. The information includes the date created, type, description, and charge. The data is sourced from HPD.

Source: Department of Housing Preservation and Development (HPD)
Date CreatedTypeDescriptionCharge
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Liens Explanation

The table below shows tax and water liens for 4200 Avenue K. Information includes tax class, month, water only flag, amount, and cycle. Data is sourced from NYC Department of Finance.

Source: NYC Department of Finance
Tax ClassMonthWater OnlyAmountCycle
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Case NumberDateTypeStatusDetails

Sales Records

Sales transactions for 4200 Avenue K. Data includes sale date, price, buyer, and seller.

DatePriceBuyerSeller

Asbestos Records

Asbestos abatement filings and records for 4200 Avenue K. Data includes filing date, type, and status.

Start DateEnd DateStatusProcedureFloor

Fire Violations

Violations issued by the Fire Department for this property.

Violation NumberDateDescriptionStatus
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Fire Inspections

Fire Department inspection records for this property.

DateTypeResult
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Fire Certificates

Fire safety certificates for this property.

TypeIssue DateExpiration
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Water Connections

Water connection permits and records for 4200 Avenue K. Data includes connection type, date, and status.

MaterialRecord Type

Elevator Permits

Elevator permit records for 4200 Avenue K. Data includes permit type, issue date, and status.

TypeIssue DateStatus

Landmark Violations

Landmark preservation violations for 4200 Avenue K. Data includes violation date, type, and status.

DateTypeStatus

Planning Projects

City Planning (ZAP) project applications for this building. Data includes project ID, status, borough, and lot/block information.

Project IDStatusBoroughBlockLot
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Building Permits

Department of Buildings issued building permits for this property. This includes permits for construction, alteration, and demolition work. Data includes permit type, job number, status, and issue date.

Permit TypeJob NumberStatusIssue Date

Electrical Permits

Department of Buildings issued electrical permits for this property. This includes permits for electrical work, installations, and modifications. Data includes permit type, job number, status, and issue date.

Permit TypeJob NumberStatusIssue Date

How 4200 Avenue K Compares

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