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Building and Landlord Data Analysis Report

523 12th Street, Brooklyn, NY 11215

2
DOB Complaints
18
311 Housing Calls
30
Housing Violations
0
Permits

Risk Assessment

94
Low Risk

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

Our AI predicts there is a 94% chance of no major maintenance issues.
Augrented Insights Report for 523 12th Street

523 12th Street is a 4-story, 8-unit brownstone building located in Brooklyn's South Slope neighborhood, constructed in 1920 and currently owned by Anthony Guarna. The building's recent history (2022-2025) reveals several pressing maintenance and safety concerns.

Most notably, there have been recurring issues with heat and hot water systems, with multiple emergency complaints recorded in late 2023 showing problems affecting various apartments, including documented violations related to non-functioning carbon monoxide and smoke detectors in Apartment 3R that were only certified as corrected in April 2024. The building has faced multiple challenges with both interior maintenance and pest control, including a significant number of paint and plaster violations throughout various units in 2022-2024, though recent bedbug reports indicate zero infestations reported in the last several filing periods. The property has also experienced ongoing rodent control challenges, with recent inspections in mid-2024 documenting rat activity and compliance failures.

Additional maintenance issues were evidenced by complaints regarding door problems and safety concerns in 2023-2024, though many building code violations from earlier periods have been addressed, including repairs to the heat riser pipe in Apartment 3R. The building's most recent Department of Health inspection in June 2024 identified unsanitary pigeon conditions requiring further inspection. Historical data shows consistent efforts to address housing maintenance code violations, though access issues have sometimes complicated inspection processes, as noted in both HVAC and gas utility complaints where inspectors were unable to gain access for final inspections.

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.

523 12th Street Report Contents

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523 12th Street Building Overview

Renter Risk Rating

This building is in the riskiest 10% of buildings in South Slope.

Building Characteristics

Total units 8
Year built 1920
Total area 11732 sq ft
Floors 4
Tax Abatements None
Building Class OLD LAW TENEMENT
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Key Building Statistics

2
DOB Complaints
Complaints filed with the Department of Buildings in the last 7 years.
30
Housing Violations
Class B & C housing maintenance code violations.
18
311 Housing Calls
Housing-related 311 service requests in the last 7 years.
3
Work Orders
Repair orders issued by city agencies.
0
ECB Violations
Environmental Control Board violations on record.
0
Evictions
Evictions executed by city marshalls.
8
Rodent Inspections
Rodent inspections conducted by DOHMH.
0
Building Permits
Permits issued by DOB in the last 7 years.

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523 12th Street 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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523 12th Street 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 523 12th Street

Housing Maintenance Code Complaints

This table shows complaints to 311 related to potential NYC Housing Maintenance Code (HMC) for 523 12th Street. 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
2023-12-192024-03-09Heat/hot Water-Apartment OnlyEmergencyCLOSE
2023-12-192024-03-09Safety-Carbon Monoxide DetectorEmergencyCLOSE
2023-12-192024-03-09Safety-Smoke DetectorEmergencyCLOSE
2023-12-192024-03-09Heat/hot Water-Apartment OnlyEmergencyCLOSE
2023-12-192024-03-09Door/window-DoorEmergencyCLOSE
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Housing Maintenance Code Violations

This table shows violations of the NYC Housing Maintenance Code (HMC) issued by HPD for 523 12th Street. 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
2024-03-05BCloseNone3R§ 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST2024-04-22T00:00:00.000Z
2024-03-05ACloseNone3R§ 27-2014 ADM CODE AND DEPT. RULES AND REGULATIONS. SCRAPE AND REMOVE RUST SCALES AND PAINT WITH 2 COATS OF PAINT AT HEAT RISER PIPE IN THE 7th ROOM FROM NORTH LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST2024-04-22T00:00:00.000Z
2024-03-05BCloseNone3R§ 27-2046.1 HMC: REPAIR OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST2024-04-22T00:00:00.000Z
2024-03-05BCloseNone3L§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CLOSET AT ALL WALLS IN THE PRIVATE HALLWAY LOCATED AT APT 3L, 3rd STORY, 1st APARTMENT FROM SOUTH AT WEST2024-04-22T00:00:00.000Z
2023-03-20ACloseNoneNone(A) § HMC: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.None
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311 Service Requests

Service requests made to 311 for 523 12th Street. Data from NYC 311.

Created DateTypeDescriptionStatusAgencyResolution
2024-06-16 11:47Unsanitary Pigeon ConditionPigeon WasteClosedDOHMH
2024-02-12 17:56PAINT/PLASTERWALLClosedHPD
2022-08-20 12:49GENERALCOOKING GASClosedHPD
2022-07-29 10:17PAINT/PLASTERWALLClosedHPD
2022-06-01 10:02PAINT/PLASTERWALLClosedHPD
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DOB Complaints

Department of Buildings complaints regarding 523 12th Street.

Complaint #FiledStatusCategoryInspection DateDisposition
39435962024-01-14CLOSEDBoiler: Defective/Inoperative/No Permit2024-01-19Inspector Unable To Gain Access – 2nd Final Attempt (2024-01-19)
38739682022-09-16CLOSEDGas Utility Referral2023-07-31Inspector Unable To Gain Access – 2nd Final Attempt (2023-07-31)
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DOB Violations

Department of Buildings violations regarding 523 12th Street.

Date IssuedCategoryDescriptionStatusComments
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Indoor Environment Complaints (DOHMH)

The table below shows indoor environment complaints received regarding the conditions at 523 12th Street. 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 523 12th Street. 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
2024-12-030002023-11-012024-10-31
2023-12-200002022-11-012023-10-31
2023-03-310002021-11-012022-10-31
2021-12-170002020-11-012021-10-31
2020-12-180002019-11-012020-10-31
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Rodent Inspections

Recent rodent inspection results for 523 12th Street. Data from NYC DOHMH.

DateTypeResult
2024-08-01ComplianceFailed for Other R
2024-06-24InitialRat Activity
2018-06-20CompliancePassed
2018-05-22InitialFailed for Other R
2016-10-05CompliancePassed
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HPD Litigation Explanation

The table below shows the HPD litigation records for 523 12th Street. 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 523 12th Street. 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 523 12th Street. 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 523 12th Street. 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 523 12th Street. 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 523 12th Street. 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 523 12th Street. 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 523 12th Street. Data includes sale date, price, buyer, and seller.

DatePriceBuyerSeller

Asbestos Records

Asbestos abatement filings and records for 523 12th Street. 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 523 12th Street. Data includes connection type, date, and status.

MaterialRecord Type

Elevator Permits

Elevator permit records for 523 12th Street. Data includes permit type, issue date, and status.

TypeIssue DateStatus

Landmark Violations

Landmark preservation violations for 523 12th Street. 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 523 12th Street Compares

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