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Building and Landlord Data Analysis Report

41 Underhill Avenue, Brooklyn, NY 11238

8
DOB Complaints
29
311 Housing Calls
11
Housing Violations
3
Permits

Risk Assessment

92
Low Risk

This building shows minimal signs of maintenance issues based on our analysis.

Our AI predicts there is a 92% chance of no major maintenance issues.
Augrented Insights Report for 41 Underhill Avenue

The 12-unit, 4-story building at 41 Underhill Avenue in Prospect Heights, built in 1931 and currently owned by Jeffrey Groner, has experienced a series of significant maintenance issues over the past few years. Most notably, there have been persistent problems with heating and hot water systems throughout the building, with multiple open and closed complaints recorded between October 2024 and June 2025, including emergency situations affecting the entire building.

Recent concerns have also emerged regarding plumbing issues, with an open complaint from June 2025 about basin/sink problems, and previous water supply issues in February 2025 that were investigated but found not to violate housing laws. The building has faced rodent-related challenges, with multiple inspections between 2023 and 2025 confirming rat activity, and a recent rat sighting reported to DOHMH in June 2025 resulting in documented violations requiring follow-up inspections. The property has an active violation from June 2023 regarding the failure to file external low-pressure inspections for 2018-2021, while previous Department of Buildings inspections in 2020 documented various safety concerns, including an obstructed fire escape and building maintenance issues.

Apartment 1B has been a particular focus of violations, facing multiple citations between June and December 2024 for issues including pest infestations, broken door hinges, and missing safety devices. The building's maintenance history shows a pattern of recurring issues with basic services and infrastructure, including sanitation concerns and pest control challenges, though more recent bedbug reports (2022-2023) indicate no infestation problems during those periods. While some violations have been resolved and various permits have been issued for work to be performed, the building continues to exhibit ongoing maintenance needs that require attention.

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.

41 Underhill Avenue Report Contents

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41 Underhill Avenue Building Overview

Renter Risk Rating

This building is in the riskiest 10% of buildings in Prospect Heights.

Building Characteristics

Total units 12
Year built 1931
Total area 7237 sq ft
Floors 4
Tax Abatements None
Building Class OLD LAW TENEMENT
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Key Building Statistics

8
DOB Complaints
Complaints filed with the Department of Buildings in the last 7 years.
11
Housing Violations
Class B & C housing maintenance code violations.
29
311 Housing Calls
Housing-related 311 service requests in the last 7 years.
0
Work Orders
Repair orders issued by city agencies.
3
ECB Violations
Environmental Control Board violations on record.
0
Evictions
Evictions executed by city marshalls.
8
Rodent Inspections
Rodent inspections conducted by DOHMH.
3
Building Permits
Permits issued by DOB in the last 7 years.

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41 Underhill Avenue 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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41 Underhill Avenue 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 41 Underhill Avenue

Housing Maintenance Code Complaints

This table shows complaints to 311 related to potential NYC Housing Maintenance Code (HMC) for 41 Underhill Avenue. 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
2025-06-212025-07-13Unsanitary Condition-Garbage/recycling StorageNon EmergencyCLOSE
2025-06-052025-06-05Plumbing-Basin/sinkNon EmergencyOPEN
2025-02-132025-02-16Plumbing-Water SupplyImmediate EmergencyCLOSE
2025-02-102025-02-12Heat/hot Water-Apartment OnlyEmergencyCLOSE
2024-11-032024-11-11Heat/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 41 Underhill Avenue. 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
2024-11-04BCloseNone1B§ 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE DOOR HINGS IN THE ENTRANCE LOCATED AT APT 1B, 1st STORY, 1st APARTMENT FROM NORTH AT EAST2024-12-11T00:00:00.000Z
2024-11-04CCloseNone1BHMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 1B, 1st STORY, 1st APARTMENT FROM NORTH AT EAST2024-12-11T00:00:00.000Z
2024-10-12CCloseNone1BHMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 1B, 1st STORY, 1st APARTMENT FROM NORTH AT EAST2024-11-01T00:00:00.000Z
2024-10-12COpenNone1B§ 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES IN THE ENTRANCE LOCATED AT APT 1B, 1st STORY, 1st APARTMENT FROM NORTH AT EAST2024-11-01T00:00:00.000Z
2024-09-25CCloseNoneNoneHMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES AT BASEMENT2024-10-25T00:00:00.000Z
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311 Service Requests

Service requests made to 311 for 41 Underhill Avenue. Data from NYC 311.

Created DateTypeDescriptionStatusAgencyResolution
2025-06-08 22:44RodentRat SightingClosedDOHMH
2025-06-05 12:08PLUMBINGBASIN/SINKOpenHPD
2025-02-13 09:17PLUMBINGWATER SUPPLYClosedHPD
2025-02-10 11:05HEAT/HOT WATERAPARTMENT ONLYClosedHPD
2024-11-19 11:31RodentRat SightingClosedDOHMH
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DOB Complaints

Department of Buildings complaints regarding 41 Underhill Avenue.

Complaint #FiledStatusCategoryInspection DateDisposition
37670602020-08-31CLOSEDTenant Safety Inspection2020-08-11No Violation Warranted For Complaint At Time Of Inspection (2020-08-31)
37659342020-08-23CLOSEDPermit – None (Building/PA/Demo etc.)2020-09-24No Violation Warranted For Complaint At Time Of Inspection (2020-09-24)
37605812020-07-20CLOSEDWork Without a Permit – Occupied Multiple Dwelling2020-07-20Inspector Unable To Gain Access – 2nd Final Attempt (2020-07-20)
37582172020-07-01CLOSEDLocal Law 188/17 Compliance Inspections – Active Jobs2020-07-01Oath Violation Served (2020-07-01)
37581372020-07-01CLOSEDWork Without a Permit – Occupied Multiple Dwelling2020-07-01Please See Complaint Number (2020-07-02)
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DOB Violations

Department of Buildings violations regarding 41 Underhill Avenue.

Date IssuedCategoryDescriptionStatusComments
2023-06-30V-DOB VIOLATION - ACTIVEVIOLATION ISSUED-FAILURE TO FILE 2020 EXTERNAL LOW PRESSURE INSPECTION
2023-06-30V-DOB VIOLATION - ACTIVEVIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTION
2023-06-20V-DOB VIOLATION - ACTIVEVIOLATION ISSUED-FAILURE TO FILE 2018 EXTERNAL LOW PRESSURE INSPECTION
2023-06-20V-DOB VIOLATION - ACTIVEVIOLATION ISSUED-FAILURE TO FILE 2019 EXTERNAL LOW PRESSURE INSPECTION
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Indoor Environment Complaints (DOHMH)

The table below shows indoor environment complaints received regarding the conditions at 41 Underhill Avenue. 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 41 Underhill Avenue. 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
2024-11-150002022-11-012023-10-31
2023-12-120002022-11-012023-10-31
2022-12-050002021-11-012022-10-31
2021-12-200002020-11-012021-10-31
2021-12-201102020-11-012021-10-31
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Rodent Inspections

Recent rodent inspection results for 41 Underhill Avenue. Data from NYC DOHMH.

DateTypeResult
2025-07-01InitialRat Activity
2025-04-28InitialRat Activity
2024-08-23ComplianceRat Activity
2024-08-12InitialRat Activity
2024-05-13InitialRat Activity
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HPD Litigation Explanation

The table below shows the HPD litigation records for 41 Underhill Avenue. 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 41 Underhill Avenue. 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 41 Underhill Avenue. Data from ECB.

DateNumberRespondentDescriptionStatusPenaltyBalance Due
2020-07-0135537129ZUNDERHILL AVENUE ASSOCIATFAILURE TO MAINTAIN BUILDING IN CODE COMPLIANT MANNAR.NOTED:AT TIME OF INSPECTION,OBSERVATION WAS MADE AT EXPOSURE(1)AND(2)CORNER TOP OF FOUNDATION WALL AT ABOVE PREMISES.MISSING BRICKS,MOTAR,AND CRACK STUCCO.BRESOLVE0.00.0
2020-07-0135537128RUNDERHILL AVE ASSOCIATES,FAILURE TO PROVIDE UNOBSTRUCTED EXIT PASSAGE WAY.NOTED:AT TIME OF INSPECTION,OBSERVATION OF FIRE ESCAPE DROP DOWN LADDER AT EXPOSURE(1) FRONT OF ABOVE PREMISES BEING OBSTRUCTED BY GARBAGE BIN APPROXIMATLY,8'-0FRESOLVE1280.00.0
2020-06-2735466537MUNDERHILL AVENUE ASSOCIATFAILURE TO MAINTAIN BLDG IN CODE COMPLIANT MANNER. NOTE: AT TIME OF INSPECTION OBSERVED AT EXP#1 OF 41 UNDERHILL AVE BKLY,NY;FIRE ESCAPE W/A LARGE AIR CONDITIONER OBSTRUCTION. ALSO CONSTRUCTION MATERIAL IE BUCKRESOLVE1250.00.0
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Alternative Enforcement Program (AEP) Explanation

The table below shows the Alternative Enforcement Program (AEP) records for 41 Underhill Avenue. 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 41 Underhill Avenue. 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 41 Underhill Avenue. 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 41 Underhill Avenue. 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 41 Underhill Avenue. Data includes sale date, price, buyer, and seller.

DatePriceBuyerSeller

Asbestos Records

Asbestos abatement filings and records for 41 Underhill Avenue. 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 41 Underhill Avenue. Data includes connection type, date, and status.

MaterialRecord Type

Elevator Permits

Elevator permit records for 41 Underhill Avenue. Data includes permit type, issue date, and status.

TypeIssue DateStatus

Landmark Violations

Landmark preservation violations for 41 Underhill Avenue. 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 41 Underhill Avenue Compares

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