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Walk-up cooperative
421 CROWN STREET
BROOKLYN · BIN 3033966
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1923Year Built
4Stories
C6Building Class
R4Zoning
44,700 sfGross Floor Area
39Units
LL97 CoveredRent Stabilized141 Open Violations 140 unresolved · 1 paperwork only ▸FDNY Report ↗
Walk-up cooperative · Owner of record: 421 CROWN ST HDFC · 12,775 sf lot · 3.5 FAR built · Flood zone X
Locations of Work
No floor-level scope or drawing coverage on file for this building.
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
ACE GROUP NY309/13/2026
RMZ CONTRACTING404/09/2026
421 CROWN ST HDFC703/22/2026
421 CROWN STREET303/21/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
VOLUME SPACE CONSULTING INC.104/20/2026
IKRA CONSULTING LLC111/17/2025
STUDIO 1109 ARCHITECTS410/28/2025
BORIS BALKHIYEV, PE207/21/2023
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
I L CONSULTING803/21/2026
DESIGN COMMUNICATION MK203/21/2026
ADVANCED BUILDERS SERVICES103/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
ACE GROUP NY CORPGeneral Contractor207/29/2026
ALBENGA CONTRACTING CORPGeneral Contractor107/08/2026
KWONG MING ELECTRIC INCElectrical103/22/2026
UNIVERSAL CONSTRUCTIONGeneral Contractor107/08/2026
PLUMBING PLBG & PLBG CORPPlumbing107/08/2026
PREMIER FLOW PLBG AND HTGPlumbing107/08/2026
RMZ CONTRACTING INCGeneral Contractor104/09/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
IKRA CONSULTING LLC7032111/17/2025
MB INSPECTIONS, CORP.8703207/21/2023
Building Lifecycle
All (97)Filed (8)Permit Issued (7)Signed Off (4)Violation (60)Inspection (4)Objection (6)Special Inspection (8)
07/28/2026
Permit issued — Sidewalk Shed
B01389895-I1-SH
05/04/2026
Violation issued (HPD, open)
A
04/30/2026
Permit issued — Sidewalk Shed
B01389895-I1-SH
04/20/2026
Filed — Alteration
INSTALLATION OF 300PSF SIDEWALK SHED AS PER PLANS. SIDEWALK SHED SHALL COMPLY WITH CHAPTER 33 OF NYC CODE 2022. NO CHANGE IN USE, OCCUPANCY OR EGRESS UNDER THIS APPLICATION.
B01389895-I1
04/15/2026
Violation issued (ECB, open)
Construction
03/02/2026
Permit issued — General Construction
B01318430-I1-GC
01/20/2026
Signed off — Alteration
MINOR INTERIOR RENOVATION TO EXISTING APARTMENT #14R ON THE 3RD FLOOR .WORK INCLUDES REPLCE INTERIOR FINISHES, NEW FLOOR COVERING ,NEW CABINETRY IN KITCHEN , REPLACE ELECTRICAL OUTLET. REPLACE PLUMBING FIXTURES IN KIND. NO CHANGE IN USE ,EGRESS OR OCCUP.
B01262660-S1
12/24/2025
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
12/17/2025
Signed off — Alteration
MINOR INTERIOR RENOVATION TO EXISTING APARTMENT #14R ON THE 3RD FLOOR .WORK INCLUDES REPLCE INTERIOR FINISHES, NEW FLOOR COVERING ,NEW CABINETRY IN KITCHEN , REPLACE ELECTRICAL OUTLET. REPLACE PLUMBING FIXTURES IN KIND. NO CHANGE IN USE ,EGRESS OR OCCUP.
B01262660-I1
11/17/2025
Filed — Alteration
PROPOSED REPAIR OF STONE LINTELS TO BE DONE AS NEEDED AS PER PLANS.NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION.
B01318430-I1
11/13/2025
Special inspection requirement — Masonry
MD MOSTAFA
11/13/2025
Special inspection requirement — Final
MD MOSTAFA
11/13/2025
Special inspection requirement — Tenant Protection Plan Compliance
MD MOSTAFA
10/28/2025
Filed — Alteration
MINOR INTERIOR RENOVATION TO EXISTING APARTMENT #14R ON THE 3RD FLOOR .WORK INCLUDES REPLCE INTERIOR FINISHES, NEW FLOOR COVERING ,NEW CABINETRY IN KITCHEN , REPLACE ELECTRICAL OUTLET. REPLACE PLUMBING FIXTURES IN KIND. NO CHANGE IN USE ,EGRESS OR OCCUP.
B01262660-P2
10/27/2025
Filed — Alteration
MINOR INTERIOR RENOVATION TO EXISTING APARTMENT #14R ON THE 3RD FLOOR .WORK INCLUDES REPLCE INTERIOR FINISHES, NEW FLOOR COVERING ,NEW CABINETRY IN KITCHEN , REPLACE ELECTRICAL OUTLET. REPLACE PLUMBING FIXTURES IN KIND. NO CHANGE IN USE ,EGRESS OR OCCUP.
B01262660-P1
08/25/2025
Permit issued — Plumbing
B01262660-S1-PL
08/14/2025
Permit issued — General Construction
B01262660-I1-GC
08/12/2025
Filed — Alteration
MINOR INTERIOR RENOVATION TO EXISTING APARTMENT #14R ON THE 3RD FLOOR .WORK INCLUDES REPLCE INTERIOR FINISHES, NEW FLOOR COVERING ,NEW CABINETRY IN KITCHEN , REPLACE ELECTRICAL OUTLET. REPLACE PLUMBING FIXTURES IN KIND. NO CHANGE IN USE ,EGRESS OR OCCUP.
B01262660-S1
08/05/2025
Filed — Alteration
MINOR INTERIOR RENOVATION TO EXISTING APARTMENT #14R ON THE 3RD FLOOR .WORK INCLUDES REPLCE INTERIOR FINISHES, NEW FLOOR COVERING ,NEW CABINETRY IN KITCHEN , REPLACE ELECTRICAL OUTLET. REPLACE PLUMBING FIXTURES IN KIND. NO CHANGE IN USE ,EGRESS OR OCCUP.
B01262660-I1
07/31/2025
Special inspection requirement — Energy Code Compliance Inspections
Zachary Bauer
07/28/2025
Special inspection requirement — Final
Zachary Bauer
07/25/2025
Violation issued (ECB, open)
Construction
07/22/2025
Violation issued (ECB, open)
Construction
02/19/2025
Violation issued (HPD, open)
B
02/19/2025
Violation issued (HPD, open)
C
02/19/2025
Violation issued (HPD, open)
C
02/19/2025
Violation issued (HPD, open)
C
01/03/2025
Violation issued (HPD, open)
C
01/03/2025
Violation issued (HPD, open)
B
01/03/2025
Violation issued (HPD, closed)
C
01/03/2025
Violation issued (HPD, open)
C
01/03/2025
Violation issued (HPD, open)
C
01/03/2025
Violation issued (HPD, open)
A
01/03/2025
Violation issued (HPD, open)
A
11/26/2024
Violation issued (DOB, open)
V-DOB VIOLATION - ACTIVE
10/28/2024
Violation issued (HPD, open)
B
10/28/2024
Violation issued (HPD, open)
A
10/28/2024
Violation issued (HPD, open)
C
10/28/2024
Violation issued (HPD, open)
C
10/28/2024
Violation issued (HPD, closed)
C
10/28/2024
Violation issued (HPD, open)
B
10/28/2024
Violation issued (HPD, open)
C
10/28/2024
Violation issued (HPD, closed)
C
10/28/2024
Violation issued (HPD, open)
C
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (ECB, open)
Unknown
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (HPD, open)
C
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (HPD, closed)
B
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (HPD, closed)
A
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (HPD, open)
A
10/11/2024
Violation issued (HPD, closed)
A
10/09/2024
Violation issued (HPD, closed)
A
10/09/2024
Violation issued (HPD, closed)
A
Latest 60 of 97 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSidewalk ShedPermit IssuedACE GROUP NY CORP07/28/2026
DOB NOWSidewalk ShedPermit IssuedACE GROUP NY CORP04/30/2026
DOB NOWGeneral ConstructionPermit IssuedRMZ CONTRACTING INC03/02/2026
DOB NOWPlumbingSigned-offGALICJA PLBG AND HTG.CORP08/25/2025
DOB NOWGeneral ConstructionSigned-offUNIVERSAL CONSTRUCTION08/14/2025
DOB NOWPlumbingSigned-offPLUMBING PLBG & PLBG CORP08/15/2023
DOB NOWGeneral ConstructionSigned-offALBENGA CONTRACTING08/09/2023
BISFBISSUEDMOD VETERANS FUEL OIL CORP02/19/2004
BISBLISSUEDMOD VETERANS FUEL OIL CORP02/18/2004
1 project · most recent 07/21/2023
Water/Sanitary
FiledStatusContractorScope
07/21/2023Signed-offPLUMBING PLBG & PLBG CORPWater/Sanitary
5 projects · most recent 04/21/2026
General Wiring
FiledStatusContractorScope
04/21/2026Permit IssuedFIRST CHOICE ELECTRICAL—
12/24/2025CompleteR & T ELECTRICAL CORPGeneral Wiring
10/27/2024Complete876 ELECTRICAL CORPGeneral Wiring
01/31/2024CompleteKWONG MING ELECTRIC INCGeneral Wiring
07/25/2023CancelledKWONG MING ELECTRIC INCGeneral Wiring
1 project · most recent 04/20/2026
Sidewalk Shed
FiledStatusContractorScope
04/20/2026Permit IssuedACE GROUP NY CORPSidewalk Shed
▾Field Inspections (DOB CAP) — 4
DateTypeResultReport
12/24/2025Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
03/13/2024Pass-Final General Construction Non-Directive 14PassView ↗
01/17/2024Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
11/03/2023Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 8
DateRequirementInspectorRole
11/13/2025MasonryMD MOSTAFAspecial
11/13/2025FinalMD MOSTAFAprogress
11/13/2025Tenant Protection Plan ComplianceMD MOSTAFAspecial
07/31/2025Energy Code Compliance InspectionsZachary Bauerprogress
07/28/2025FinalZachary Bauerprogress
08/02/2023Fire-Resistant Penetrations and JointsBORIS Balkhiyevspecial
06/29/2023Energy Code Compliance InspectionsBORIS Balkhiyevprogress
06/27/2023Tenant Protection Plan ComplianceBORIS Balkhiyevspecial
▾Documents — 32 on file (BIS + DOB NOW)
▸Plans & Drawings9
▸DOB NOWPlans/Sketch9
08/27/2026B00896532-S2Request digital key ↗
08/27/2026B00896532-S1Request digital key ↗
08/27/2026B00896532-I1Request digital key ↗
Showing 3 of 9 on file for this type
▸Seals & Professional Certifications16
▸DOB NOWDPL-1: Design Professional Seal & Signature9
08/20/2026B01262660-I1Open ↗
08/20/2026B01262660-S1Open ↗
08/20/2026B01262660-P2Open ↗
Showing 3 of 9 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature4
09/01/2026B00896532-S2Open ↗
08/25/2026B00896532-I1Open ↗
08/22/2026B01318430-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWProgress Inspector Seal & Signature3
08/26/2026B01262660-I1Open ↗
08/25/2026B00896532-I1Open ↗
08/22/2026B01318430-I1Open ↗
▸Environmental & Asbestos7
▸DOB NOWDEP ACP-5: Asbestos Assessment Report7
08/20/2026B01262660-P2Open ↗
08/20/2026B01262660-P1Open ↗
08/20/2026B01262660-S1Open ↗
Showing 3 of 7 on file for this type