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Building and Landlord Data Analysis Report

509 Onderdonk Avenue, Queens, NY 11385

1
DOB Complaints
9
311 Housing Calls
7
Housing Violations
1
Permits

Risk Assessment

97
Low Risk

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

Our AI predicts there is a 97% chance of no major maintenance issues.
Augrented Insights Report for 509 Onderdonk Avenue

The two-story, three-unit Old Law Tenement building at 509 Onderdonk Avenue in Ridgewood, currently owned by Pedro Morales, has experienced several concerning issues in recent years. Most notably, in December 2024, the building received multiple Housing Maintenance Code violations, including three open violations related to door functionality, window guards, and carbon monoxide detector requirements, as well as numerous administrative violations concerning required safety postings in common areas. These violations include problems with self-closing doors, missing window guards in apartment 2L, and inadequate notice of various safety requirements.

Additionally, there was a heat and hot water complaint in December 2024 that prompted an HPD inspection, though no violations were found. Between 2024 and 2025, there were multiple complaints regarding inadequate tattooing equipment/facilities that required DOHMH intervention. The building's history shows some positive maintenance record, with rodent inspections in 2016, 2017, 2022, and most recently in September 2024, all of which passed.

A 2022 complaint regarding rodent sightings was closed without violations being found. A permit for work was issued in August 2021. While the building has maintained compliance with rodent control requirements over the years, the recent cluster of violations in December 2024 and ongoing compliance issues regarding safety features represent a significant shift in the building's maintenance record.

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.

509 Onderdonk Avenue Report Contents

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509 Onderdonk AvenueBuilding Overview

Renter Risk Rating

This building is in the riskiest 10% of buildings in Ridgewood.

Building Characteristics

Total units 3
Year built 1920
Total area 2849 sq ft
Floors 2
Tax Abatements None
Building Class OLD LAW TENEMENT
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Key Building Statistics

1
DOB Complaints
Complaints filed with the Department of Buildings in the last 7 years.
7
Housing Violations
Class B & C housing maintenance code violations.
9
311 Housing Calls
Housing-related 311 service requests in the last 7 years.
0
Work Orders
Repair orders issued by city agencies.
0
ECB Violations
Environmental Control Board violations on record.
0
Evictions
Evictions executed by city marshalls.
0
Rodent Inspections
Rodent inspections conducted by DOHMH.
1
Building Permits
Permits issued by DOB in the last 7 years.

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509 Onderdonk 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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509 Onderdonk Avenue Rent Control Status

Year Built
Built before 1974
Units
Less than 6 units
RGB Registration
Not registered
Tax Abatement
None found
Year BuiltUnitsRGB RegistrationTax Abatement
Before 1974 <6 units Not registered None

Full Building Data for 509 Onderdonk Avenue

Housing Maintenance Code Complaints

This table shows complaints to 311 related to potential NYC Housing Maintenance Code (HMC) for 509 Onderdonk 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
2024-12-152024-12-19Heat/hot Water-Apartment OnlyEmergencyCLOSE
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Housing Maintenance Code Violations

This table shows violations of the NYC Housing Maintenance Code (HMC) issued by HPD for 509 Onderdonk 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
2024-12-17AOpenNoneNone§ 27-2046.1 HMC: POST A PROPER NOTICE OF CARBON MONOXIDE DETECTING DEVICE REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, IN A COMMON AREA OF A CLASS A MULTIPLE DWELLING NEAR INSPECTION CERTIFICATE OR PROVIDE NOTICE TO TENANTS IN A PRIVATE DWELLING.None
2024-12-17COpenNone2L§ 27-2044, 2041.1 HMC: §238 MDL and 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING THE DOORS THAT IS MISSING OR DEFECTIVE HINGES IN THE ENTRANCE LOCATED AT APT 2L, 2nd STORY, 1st APARTMENT FROM WEST AT NORTHNone
2024-12-17AOpenNoneNone§ 27-2104 ADM CODE POST AND MAINTAIN A PROPER SIGN ON WALL OF ENTRANCE STORY SHOWING THE REGISTRATION NUMBER ASSIGNED BY THE DEPARTMENT AND THE ADDRESS OF THE BUILDING. AT PUBLIC HALL, 1st STORYNone
2024-12-17AOpenNoneNone§ 329, M/D LAW AND DEPT. RULES AND REGS. PROVIDE A COMPLETED CERTIFICATE OF INSPECTION VISITS IN A PROPER FRAME AT OR NEAR MAILBOXES, BOTTOM EDGE OF FRAME BETWEEN 48-62 INCHES ABOVE FLOOR AT PUBLIC HALL, 1st STORYNone
2024-12-17CCloseNone2L§ 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF HOT WATER EXCEEDING MAXIMUM TEMPERATURE OF 130 DEGREES IN THE ENTIRE APARTMENT LOCATED AT APT 2L, 2nd STORY, 1st APARTMENT FROM WEST AT NORTHNone
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311 Service Requests

Service requests made to 311 for 509 Onderdonk Avenue. Data from NYC 311.

Created DateTypeDescriptionStatusAgencyResolution
2024-12-15 11:56HEAT/HOT WATERAPARTMENT ONLYClosedHPD
2024-11-04 22:03TattooingDirty/Inadequate Eqp/FacilityClosedDOHMH
2024-09-14 11:17TattooingDirty/Inadequate Eqp/FacilityClosedDOHMH
2024-08-15 13:24TattooingDirty/Inadequate Eqp/FacilityClosedDOHMH
2024-08-13 10:59TattooingDirty/Inadequate Eqp/FacilityClosedDOHMH
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DOB Complaints

Department of Buildings complaints regarding 509 Onderdonk Avenue.

Complaint #FiledStatusCategoryInspection DateDisposition
48752832022-03-24CLOSEDStorefront or Business Sign/Awning/Marquee/Canopy – ILLEGAL2022-05-19No Violation Warranted For Complaint At Time Of Inspection (2022-05-23)
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DOB Violations

Department of Buildings violations regarding 509 Onderdonk Avenue.

Date IssuedCategoryDescriptionStatusComments
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Indoor Environment Complaints (DOHMH)

The table below shows indoor environment complaints received regarding the conditions at 509 Onderdonk 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 509 Onderdonk 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
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Rodent Inspections

Recent rodent inspection results for 509 Onderdonk Avenue. Data from NYC DOHMH.

DateTypeResult
2024-09-12InitialPassed
2022-05-19InitialPassed
2017-05-23InitialPassed
2016-05-09InitialPassed
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HPD Litigation Explanation

The table below shows the HPD litigation records for 509 Onderdonk 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 509 Onderdonk 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 509 Onderdonk Avenue. Data from ECB.

DateNumberRespondentDescriptionStatusPenaltyBalance Due
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Alternative Enforcement Program (AEP) Explanation

The table below shows the Alternative Enforcement Program (AEP) records for 509 Onderdonk 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 509 Onderdonk 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 509 Onderdonk 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 509 Onderdonk 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 509 Onderdonk Avenue. Data includes sale date, price, buyer, and seller.

DatePriceBuyerSeller

Asbestos Records

Asbestos abatement filings and records for 509 Onderdonk 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 509 Onderdonk Avenue. Data includes connection type, date, and status.

MaterialRecord Type

Elevator Permits

Elevator permit records for 509 Onderdonk Avenue. Data includes permit type, issue date, and status.

TypeIssue DateStatus

Landmark Violations

Landmark preservation violations for 509 Onderdonk 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 509 Onderdonk Avenue Compares

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