← Back
BuildNYC
Over six families without stores
509 12TH STREET
BROOKLYN · Park Slope · BIN 3325209
💬 Discuss this project
1916Year Built
4Stories
C1Building Class
R6BZoning
30,047 sfGross Floor Area
34Units
Rent Stabilized43 Active Violations ▸FDNY Report ↗
Over six families without stores · Owner of record: 503-9 12 St · 10,000 sf lot · 3 FAR built · Flood zone X
Locations of Work
ArchitectureMechanicalPlumbingLandscapeCivil
Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.
Roof1p · 1 filing · 20 docs
Floor 4Apartment Renovations Prospect Park West29p · 2 filings · 20 docs
Floor 3Apartment Renovations Prospect Park West24p · 2 filings · 20 docs
Floor 2Unit 2B65p · 3 filings · 20 docs
Floor 1Unit 1B68p · 3 filings · 20 docs
Cellar1p · 1 filing · 20 docs
BasementApartment Renovations Prospect Park West2p · 2 filings · 20 docs
Sub-BasementApartment renovations at Prospect Park West14p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
Greenbrook Partners3107/08/2026
505-509 12th St703/21/2026
503-9 12 St203/22/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
12/01/2020$11.1M—— → —$369/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
An Shen Ma Architect1202/17/2026
Cpengineering907/11/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
Metropolis Group1803/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
NTF ManagementGeneral Contractor607/08/2026
P.S.I. MechanicalPlumbing407/08/2026
Amm General ContractingPlumbing407/08/2026
Ins ConstructionGeneral Contractor303/21/2026
Alltech Electrical ContngElectrical103/22/2026
Eveready DesignGeneral Contractor107/08/2026
KJK ElectricElectrical103/22/2026
Go Pro Plumbing and HeatingPlumbing107/08/2026
Bruni ElectricElectrical103/22/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
An Shen Ma Architect29681202/17/2026
Building Lifecycle
All (137)Filed (21)Permit Issued (9)Signed Off (7)Violation (60)Inspection (10)Special Inspection (30)
04/06/2026
Signed off — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-I1
04/06/2026
Signed off — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-S2
04/06/2026
Signed off — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-S1
02/20/2026
Signed off — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01250020-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01250020-I1
02/20/2026
Signed off — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01250020-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01250020-S1
02/20/2026
Signed off — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01250020-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01250020-S2
02/17/2026
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-P3
02/17/2026
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-P4
02/17/2026
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-P1
02/12/2026
Special inspection requirement — Tenant Protection Plan Compliance
AN MA
02/10/2026
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
02/09/2026
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
02/03/2026
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01250020-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01250020-P3
01/31/2026
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
01/30/2026
Special inspection requirement — Fire-Resistance Rated Construction
AN MA
01/30/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
AN MA
01/30/2026
Special inspection requirement — Energy Code Compliance Inspections
AN MA
01/30/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
AN MA
01/30/2026
Special inspection requirement — Metering
AN MA
01/30/2026
Special inspection requirement — Lighting in dwelling units
AN MA
01/30/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
AN MA
01/30/2026
Special inspection requirement — Energy Code Compliance Inspections
AN MA
01/30/2026
Special inspection requirement — Final
AN MA
01/27/2026
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01250020-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01250020-P2
01/27/2026
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01250020-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01250020-P1
01/27/2026
Special inspection requirement — Shutoff dampers
AN MA
01/27/2026
Special inspection requirement — Mechanical Systems
AN MA
01/27/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
AN MA
01/27/2026
Special inspection requirement — Energy Code Compliance Inspections
AN MA
01/27/2026
Special inspection requirement — Final
AN MA
01/21/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
AN MA
01/21/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
AN MA
01/21/2026
Special inspection requirement — Energy Code Compliance Inspections
AN MA
01/21/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
AN MA
01/21/2026
Special inspection requirement — Mechanical Systems
AN MA
01/21/2026
Special inspection requirement — Energy Code Compliance Inspections
AN MA
01/21/2026
Special inspection requirement — Final
AN MA
01/21/2026
Special inspection requirement — Shutoff dampers
AN MA
01/21/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
AN MA
01/21/2026
Special inspection requirement — Energy Code Compliance Inspections
AN MA
01/21/2026
Special inspection requirement — Final
AN MA
01/21/2026
Special inspection requirement — Fire-Resistance Rated Construction
AN MA
01/21/2026
Special inspection requirement — Metering
AN MA
01/21/2026
Special inspection requirement — Lighting in dwelling units
AN MA
01/07/2026
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
01/02/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
11/17/2025
Permit issued — Plumbing
B01303549-S1-PL
11/17/2025
Permit issued — Mechanical Systems
B01303549-S2-MS
11/14/2025
Permit issued — General Construction
B01303549-I1-GC
11/12/2025
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
11/10/2025
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-I1
11/10/2025
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-S2
11/10/2025
Filed — Alteration
TO INSTALL OR REPLACE PLUMBING FIXTURES IN EXISTING APARTMENT. FILED IN CONJUNCTION W/ ALT #B01303549-I1. NO CHANGE OF USE, EGRESS OR OCCUPANCY.
B01303549-S1
10/24/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
10/23/2025
Permit issued — Mechanical Systems
B01250020-S2-MS
10/21/2025
Violation issued (HPD, closed)
B
10/21/2025
Violation issued (HPD, closed)
B
10/21/2025
Violation issued (HPD, closed)
C
10/21/2025
Violation issued (HPD, closed)
B
10/21/2025
Violation issued (HPD, closed)
B
Latest 60 of 137 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingSigned-offAmm General Contracting11/17/2025
DOB NOWMechanical SystemsSigned-offNTF Management11/17/2025
DOB NOWGeneral ConstructionSigned-offNTF Management11/14/2025
DOB NOWMechanical SystemsSigned-offNTF Management10/23/2025
DOB NOWPlumbingSigned-offP.S.I. Mechanical09/22/2025
DOB NOWGeneral ConstructionSigned-offNTF Management09/18/2025
DOB NOWGeneral ConstructionSigned-offIns Construction05/23/2022
DOB NOWPlumbingPermit IssuedGo Pro Plumbing and Heating09/01/2021
DOB NOWGeneral ConstructionSigned-offEveready Design08/24/2021
BISOTISSUEDSouth Slope Maintenance09/11/2017
BISPLISSUEDG.B. & Son08/09/2017
BISOTISSUEDSouth Slope Maintenance06/19/2017
BISEQISSUEDA-1 Premier Scaffolding03/26/2010
BISEQISSUEDA-1 Premier Scaffolding04/08/2009
BISEQISSUEDA-1 Premier Scaffolding11/24/2008
BISPLISSUEDWalter J.grande P & H12/16/1993
BIS—RE-ISSUEDSeventh Ave Maintenance03/19/1993
BIS—ISSUEDSeventh Ave Maintenance10/05/1992
1 project · most recent 07/11/2022
Gas Water/Sanitary
FiledStatusContractorScope
07/11/2022Permit IssuedGo Pro Plumbing and HeatingGas, Water/Sanitary
3 projects · most recent 11/14/2025
General Wiring
FiledStatusContractorScope
11/14/2025Permit IssuedKJK ElectricGeneral Wiring
06/20/2022CompleteAlltech Electrical ContngGeneral Wiring
08/23/2021Permit IssuedBruni ElectricGeneral Wiring
▾Field Inspections (DOB CAP) — 10
DateTypeResultReport
02/10/2026Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
02/09/2026Pass-Final PL - Up to 3 Requested FloorsPassView ↗
01/31/2026Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
01/07/2026Pass-Final PL - Up to 3 Requested FloorsPassView ↗
01/02/2026Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
11/12/2025Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
10/24/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
02/15/2023No Access-Final PL - Up to 9 Requested FloorsNo AccessView ↗
11/23/2021Pass-Final PL - Up to 3 Requested FloorsPassView ↗
11/08/2021Pass-Final PL - Up to 9 Requested FloorsPassView ↗
▾Special Inspection Requirements (DOB NOW) — 33
DateRequirementInspectorRole
02/12/2026Tenant Protection Plan ComplianceAN MAspecial
01/30/2026Fire-Resistance Rated ConstructionAN MAprogress
01/30/2026Fire-Resistant Penetrations and JointsAN MAspecial
01/30/2026Energy Code Compliance InspectionsAN MAprogress
01/30/2026HVAC-R and service water piping design and insulationAN MAenergy_progress
01/30/2026MeteringAN MAenergy_progress
01/30/2026Lighting in dwelling unitsAN MAenergy_progress
01/30/2026Fire-Resistant Penetrations and JointsAN MAspecial
01/30/2026Energy Code Compliance InspectionsAN MAprogress
01/30/2026FinalAN MAprogress
01/27/2026Shutoff dampersAN MAenergy_progress
01/27/2026Mechanical SystemsAN MAspecial
01/27/2026Fire-Resistant Penetrations and JointsAN MAspecial
01/27/2026Energy Code Compliance InspectionsAN MAprogress
01/27/2026FinalAN MAprogress
01/21/2026Fire-Resistant Penetrations and JointsAN MAspecial
01/21/2026Fire-Resistant Penetrations and JointsAN MAspecial
01/21/2026Energy Code Compliance InspectionsAN MAprogress
01/21/2026HVAC-R and service water piping design and insulationAN MAenergy_progress
01/21/2026Mechanical SystemsAN MAspecial
01/21/2026Energy Code Compliance InspectionsAN MAprogress
01/21/2026FinalAN MAprogress
01/21/2026Shutoff dampersAN MAenergy_progress
01/21/2026Fire-Resistant Penetrations and JointsAN MAspecial
01/21/2026Energy Code Compliance InspectionsAN MAprogress
Latest 25 of 33.
▾Documents — 135 on file (BIS + DOB NOW)
▸Plans & Drawings15
▸DOB NOWPlans/Sketch11
08/29/2026B00529425-P3Request digital key ↗
08/29/2026B00529425-P2Request digital key ↗
08/29/2026B00529425-P1Request digital key ↗
Showing 3 of 11 on file for this type
▸DOB NOWPlans/Sketch - General Construction4
09/01/2026B00469945-I1Request digital key ↗
09/01/2026B00469945-P1Request digital key ↗
09/01/2026B00469945-P2Request digital key ↗
Showing 3 of 4 on file for this type
▸Applications & Permits25
▸DOB NOWLPC Approval/Permit15
08/13/2026B01303549-S2Open ↗
08/13/2026B00529425-P3Open ↗
08/13/2026B00529425-I1Open ↗
Showing 3 of 15 on file for this type
▸BISWORK PERMIT APPLICATION7
09/18/2017321581169Open ↗
08/09/2017321581169Open ↗
06/20/2017321581169Open ↗
Showing 3 of 7 on file for this type
▸BISPLAN / WORK APPROVAL APPLICATION3
06/09/2017321581169Open ↗
11/26/2008310233397Open ↗
11/24/2008310233280Open ↗
▸Seals & Professional Certifications46
▸DOB NOWProgress Inspector Seal & Signature17
10/01/2026B00469945-P2Open ↗
10/01/2026B00469945-P2Open ↗
09/01/2026B01303549-P3Open ↗
Showing 3 of 17 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature15
09/01/2026B00469945-I1Open ↗
09/01/2026B00469945-P1Open ↗
09/01/2026B00469945-P2Open ↗
Showing 3 of 15 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature7
09/01/2026B01303549-P3Open ↗
09/01/2026B01303549-P3Open ↗
09/01/2026B01250020-S1Open ↗
Showing 3 of 7 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION3
06/09/2017321581169Open ↗
10/21/2010310233397Open ↗
11/26/2008310233397Open ↗
▸BISPROFESSIONAL CERTIFIED CHECKLIST2
11/26/2008310233397Open ↗
11/24/2008310233280Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM2
11/26/2008310233397Open ↗
11/24/2008310233280Open ↗
▸Trade Schedules & Equipment1
▸BISSCHEDULE B - PLUMBING/SPRINKLER/STANDPIPE1
06/09/2017321581169Open ↗
▸Safety & Tenant Protection1
▸BISTenant Protection Plan and Notes1
06/09/2017321581169Open ↗
▸Environmental & Asbestos18
▸DOB NOWDEP ACP-5: Asbestos Assessment Report15
09/01/2026B00469945-I1Open ↗
09/01/2026B00469945-P1Open ↗
09/01/2026B00469945-P2Open ↗
Showing 3 of 15 on file for this type
▸BISASBESTOS EXEMPTION CERTIFICATION LETTER2
11/26/2008310233397Open ↗
11/24/2008310233280Open ↗
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
06/09/2017321581169Open ↗
▸Energy Compliance4
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY1
12/15/2020321581169Open ↗
▸BISAS-BUILT ENERGY ANALYSIS1
12/15/2020321581169Open ↗
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS1
06/09/2017321581169Open ↗
▸DOB NOWEN2: As Built Energy Analysis.1
08/13/2026B00469945-I1Open ↗
▸Inspections & Test Reports1
▸BISTECHNICAL REPORT: RESPONSIBILITY1
12/15/2020321581169Open ↗
▸Approvals, Objections & Sign-offs17
▸DOB NOWLandmark Approval6
08/13/2026B01250020-P2Open ↗
08/13/2026B01250020-P1Open ↗
08/13/2026B01250020-S1Open ↗
Showing 3 of 6 on file for this type
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST3
03/05/2021321581169Open ↗
06/24/2011310233280Open ↗
10/21/2010310233397Open ↗
▸BISADMINISTRATIVE OBJECTIONS3
11/26/2008310233397Open ↗
11/26/2008310233397Open ↗
11/24/2008310233280Open ↗
▸BISLETTERS - SUPPORTING DOCUMENTATION2
06/24/2011310233280Open ↗
10/21/2010310233397Open ↗
▸BISLANDMARKS APPROVAL2
06/21/2017321581169Open ↗
06/21/2017321581169Open ↗
▸BISLANDMARKS SIGNOFF1
12/15/2020321581169Open ↗
▸Cost, Insurance & Ownership2
▸BISCOST AFFIDAVIT2
12/15/2020321581169Open ↗
06/09/2017321581169Open ↗
▸Filing & Intake Forms4
▸BISADDITIONAL INFORMATION2
12/03/2020321581169Open ↗
11/24/2008310233280Open ↗
▸BISEFILING COVER SHEET2
06/09/2017321581169Open ↗
11/24/2008310233280Open ↗
▸Other Documents1
▸BISDHCR DOCUMENT1
12/30/2020321581169Open ↗