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Four families
421 HERZL STREET
BROOKLYN · BIN 3082270
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1930Year Built
2Stories
C3Building Class
R6Zoning
3,000 sfGross Floor Area
4Units
Rent Stabilized85 Open Violations ▸FDNY Report ↗
Four families · Owner of record: 421 HERZL STREET 3 LLC · 2,500 sf lot · 1.2 FAR built · Flood zone X
Locations of Work
ArchitecturePlumbing
Permit Issued — active, not yet Signed-off
Floor 2Under Construction3p · 1 filing · 9 docs
Floor 1Under Construction4p · 1 filing · 9 docs
CellarUnder Construction4p · 2 filings · 18 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
421 HERZL STREET 3 LLC103/21/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
02/04/2020$820K—Private party → 421 HERZL STREET 3 LLC$273/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
SKYPEAK LLC307/06/2026
S M TAM ARCHITECT, PLLC211/26/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
INSHA BUILDING CONSULTANTS203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
URBAN CONSTR & DESIGN LLCGeneral Contractor303/21/2026
TRI CITY MECHANICAL GROUP CORPPlumbing207/08/2026
ALL PRO PLBG & HTG INCPlumbing107/08/2026
M & M PIPING AND HEATINGPlumbing107/08/2026
Building Lifecycle
All (83)Filed (5)Permit Issued (5)Signed Off (2)Violation (60)Inspection (11)
07/22/2026
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
07/22/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
07/22/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
07/06/2026
Filed — Alteration
Subsequent filing to add plumbing work type to replace existing (1) gas boiler with (5) individual gas boilers, install (5) gas HWHs at cellar Floor, and new plumbing fixtures as per plans.
B01353394-P1
05/19/2026
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
05/12/2026
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
05/07/2026
Permit issued — Plumbing
B01353394-S1-PL
05/04/2026
Violation issued (HPD, open)
A
04/15/2026
Filed — Alteration
Subsequent filing to add plumbing work type to replace existing (1) gas boiler with (5) individual gas boilers, install (5) gas HWHs at cellar Floor, and new plumbing fixtures as per plans.
B01353394-S1
02/12/2026
Permit issued — General Construction
B01353394-I1-GC
02/11/2026
Filed — Alteration
Subsequent filing to add plumbing work type to replace existing (1) gas boiler with (5) individual gas boilers, install (5) gas HWHs at cellar Floor, and new plumbing fixtures as per plans.
B01353394-I1
06/09/2025
Violation issued (HPD, open)
A
12/27/2024
Signed off — Alteration
HEREBY FILING TO AMEND PLUMBING SCOPE OF WORK FOR GAS OPERATING PRESSURE, GAS METER AND GAS RISER INFORMATION AND GAS USES AND APLLIANCE EQUIPMENT SCHEDULE. NO PLANS TO BE AMENDED AS PER THIS- S1 FILING.
B00400821-S1
12/17/2024
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
12/10/2024
Signed off — Alteration
HEREBY FILING TO AMEND PLUMBING SCOPE OF WORK FOR GAS OPERATING PRESSURE, GAS METER AND GAS RISER INFORMATION AND GAS USES AND APLLIANCE EQUIPMENT SCHEDULE. NO PLANS TO BE AMENDED AS PER THIS- S1 FILING.
B00400821-I1
12/09/2024
Permit issued — Plumbing
B00400821-S1-PL
11/26/2024
Filed — Alteration
HEREBY FILING TO AMEND PLUMBING SCOPE OF WORK FOR GAS OPERATING PRESSURE, GAS METER AND GAS RISER INFORMATION AND GAS USES AND APLLIANCE EQUIPMENT SCHEDULE. NO PLANS TO BE AMENDED AS PER THIS- S1 FILING.
B00400821-S1
11/26/2024
Violation issued (HPD, closed)
I
05/21/2024
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
05/09/2024
Permit issued — Plumbing
B44861775-I1-PL
04/10/2024
Violation issued (HPD, open)
A
03/01/2024
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
01/25/2024
Inspection — Fail-Final PL - Up to 3 Requested Floors
Fail
View inspection ↗
01/08/2024
Inspection — Fail-Final PL - Up to 3 Requested Floors
Fail
View inspection ↗
01/02/2024
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
11/20/2023
Violation issued (HPD, closed)
I
07/18/2023
Permit issued — Plumbing
B00400821-I1-PL
03/23/2023
Violation issued (HPD, open)
A
11/07/2022
Violation issued (HPD, closed)
I
02/25/2022
Violation issued (HPD, open)
A
02/25/2022
Violation issued (HPD, closed)
I
04/09/2021
Violation issued (HPD, closed)
I
04/09/2021
Violation issued (HPD, open)
A
12/16/2020
Filed — Alteration
HEREBY FILING TO AMEND PLUMBING SCOPE OF WORK FOR GAS OPERATING PRESSURE, GAS METER AND GAS RISER INFORMATION AND GAS USES AND APLLIANCE EQUIPMENT SCHEDULE. NO PLANS TO BE AMENDED AS PER THIS- S1 FILING.
B00400821-I1
06/17/2020
Violation issued (HPD, open)
A
06/17/2020
Violation issued (HPD, open)
A
06/17/2020
Violation issued (HPD, open)
B
06/17/2020
Violation issued (HPD, open)
A
06/17/2020
Violation issued (HPD, open)
B
01/20/2020
Violation issued (HPD, closed)
B
01/20/2020
Violation issued (HPD, open)
C
01/20/2020
Violation issued (HPD, closed)
A
12/04/2019
Violation issued (HPD, open)
B
12/04/2019
Violation issued (HPD, open)
C
12/04/2019
Violation issued (HPD, closed)
C
12/04/2019
Violation issued (HPD, open)
A
12/04/2019
Violation issued (HPD, open)
B
10/30/2019
Violation issued (HPD, closed)
I
10/17/2019
Violation issued (HPD, open)
A
10/17/2019
Violation issued (HPD, open)
B
10/17/2019
Violation issued (HPD, open)
C
10/17/2019
Violation issued (HPD, open)
C
10/17/2019
Violation issued (HPD, open)
B
10/17/2019
Violation issued (HPD, open)
C
10/17/2019
Violation issued (HPD, open)
B
10/17/2019
Violation issued (HPD, open)
B
10/17/2019
Violation issued (HPD, open)
A
10/17/2019
Violation issued (HPD, open)
C
10/17/2019
Violation issued (HPD, open)
A
10/17/2019
Violation issued (HPD, open)
A
Latest 60 of 83 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingPermit IssuedALL PRO PLBG & HTG INC05/07/2026
DOB NOWGeneral ConstructionPermit IssuedURBAN CONSTR & DESIGN LLC02/12/2026
DOB NOWPlumbingSigned-offFLAVIO MECHANICAL CORP12/09/2024
DOB NOWPlumbingSigned-offM & M PIPING AND HEATING05/09/2024
DOB NOWPlumbingSigned-offFLAVIO MECHANICAL CORP07/18/2023
BISOTISSUEDCHATKHIL CONTRACTING & HA06/10/2021
1 project · most recent 07/06/2026
Gas Water/Sanitary
FiledStatusContractorScope
07/06/2026Permit IssuedALL PRO PLBG & HTG INCGas, Water/Sanitary
3 projects · most recent 03/16/2026
General Wiring
FiledStatusContractorScope
03/16/2026Permit IssuedWCK ELECTRIC CORP.General Wiring
11/01/2023CompleteWCK ELECTRIC CORP.General Wiring
04/13/2021CompleteWCK ELECTRIC CORP.General Wiring
▾Field Inspections (DOB CAP) — 11
DateTypeResultReport
07/22/2026Certified Gas-Gas-Piping-RoughingCertifiedView ↗
07/22/2026Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
07/22/2026Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
05/19/2026Pass-Final PL - Up to 3 Requested FloorsPassView ↗
05/12/2026Pass-Final PL - Up to 3 Requested FloorsPassView ↗
12/17/2024Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
05/21/2024Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
03/01/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
01/25/2024Fail-Final PL - Up to 3 Requested FloorsFailView ↗
01/08/2024Fail-Final PL - Up to 3 Requested FloorsFailView ↗
01/02/2024Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
▾Documents — 43 on file (BIS + DOB NOW)
▸Plans & Drawings5
▸DOB NOWPlans/Sketch4
09/02/2026B00400821-S1Request digital key ↗
08/17/2026B01353394-P1Request digital key ↗
08/17/2026B01353394-S1Request digital key ↗
Showing 3 of 4 on file for this type
▸DOB NOWPlans/Sketch - Plumbing Legalization1
09/02/2026B00400821-I1Request digital key ↗
▸Applications & Permits5
▸BISWORK PERMIT APPLICATION3
06/10/2021340769458Open ↗
05/28/2021340769458Open ↗
12/11/2020340769458Open ↗
▸BISPLAN - WORK & PERMITS - SUPPPORTING DOCUMENTATION1
10/07/2020340769458Open ↗
▸BISPLAN / WORK APPROVAL APPLICATION1
08/11/2023340769458Open ↗
▸Seals & Professional Certifications6
▸DOB NOWDPL-1: Design Professional Seal & Signature5
08/17/2026B01353394-P1Open ↗
08/17/2026B01353394-S1Open ↗
08/17/2026B01353394-I1Open ↗
Showing 3 of 5 on file for this type
▸BISAPPLICANT OWNER SIGNATURE1
10/07/2020340769458Open ↗
▸Safety & Tenant Protection2
▸BISTenant Protection Plan and Notes1
10/07/2020340769458Open ↗
▸DOB NOWTenant Protection Plan1
08/13/2026B00400821-I1Open ↗
▸Environmental & Asbestos6
▸DOB NOWDEP ACP-5: Asbestos Assessment Report5
08/17/2026B01353394-S1Open ↗
08/17/2026B01353394-P1Open ↗
08/17/2026B01353394-I1Open ↗
Showing 3 of 5 on file for this type
▸BISASBESTOS: CERTIFICATION (DEP ACP5)1
10/07/2020340769458Open ↗
▸Energy Compliance8
▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY4
12/20/2023340769458Open ↗
12/20/2023340769458Open ↗
10/07/2020340769458Open ↗
Showing 3 of 4 on file for this type
▸BISINTERIOR LIGHTING POWER2
12/20/2023340769458Open ↗
12/20/2023340769458Open ↗
▸BISAS-BUILT ENERGY ANALYSIS (EN2)1
12/20/2023340769458Open ↗
▸BISENERGY CODE COMPLIANCE INSPECTIONS1
12/20/2023340769458Open ↗
▸Inspections & Test Reports4
▸BISTECHNICAL REPORT: RESPONSIBILITY4
12/20/2023340769458Open ↗
12/20/2023340769458Open ↗
10/07/2020340769458Open ↗
Showing 3 of 4 on file for this type
▸Approvals, Objections & Sign-offs2
▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST1
12/21/2023340769458Open ↗
▸BISFINAL1
12/20/2023340769458Open ↗
▸Cost, Insurance & Ownership2
▸BISCOST AFFIDAVIT1
10/07/2020340769458Open ↗
▸BISCOST AFFIDAVIT (FINAL): PW31
12/20/2023340769458Open ↗
▸Filing & Intake Forms3
▸BISADDITIONAL INFORMATION2
06/10/2021340769458Open ↗
05/28/2021340769458Open ↗
▸BISEFILING JOB APPLICATION COVER SHEET1
10/07/2020340769458Open ↗