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Five to six families
171 UNION STREET
BROOKLYN · Carroll Gardens-Cobble Hill-Gowanus-Red Hook · BIN 3004306
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1900Year Built
3Stories
C2Building Class
R6BZoning
2,710 sfGross Floor Area
5Units
Rent Stabilized1 Open Violation ▸FDNY Report ↗
Five to six families · 2,200 sf lot · 1.23 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
BILLY ENTERPRISES INC703/22/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
FL&M ENGINEERING DESIGN &INSPECTION101/05/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
GREEN STUDIO203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
BILLY ENTERPRISES INCGeneral Contractor603/21/2026
Building Lifecycle
All (12)Filed (1)Permit Issued (2)Signed Off (1)Violation (8)
05/06/2026
Violation issued (HPD, open)
A
06/11/2025
Violation issued (HPD, closed)
A
04/12/2024
Violation issued (HPD, closed)
A
08/28/2023
Signed off — Alteration
INSTALLATION OF 300 PSF SIDEWALK SHED PIPE SCAFFOLDING AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER # 33 OF THE 2014 CODE. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION.
B00655937-I1
03/27/2023
Violation issued (HPD, closed)
A
11/14/2022
Violation issued (HPD, closed)
I
03/02/2022
Violation issued (HPD, closed)
A
01/05/2022
Filed — Alteration
INSTALLATION OF 300 PSF SIDEWALK SHED PIPE SCAFFOLDING AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER # 33 OF THE 2014 CODE. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION.
B00655937-I1
01/05/2022
Permit issued — Sidewalk Shed
B00655937-I1-SF
01/05/2022
Permit issued — Supported Scaffold
B00655937-I1-SH
04/13/2021
Violation issued (HPD, closed)
A
10/31/2019
Violation issued (HPD, closed)
I
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSidewalk ShedSigned-offBILLY ENTERPRISES INC01/05/2022
DOB NOWSupported ScaffoldSigned-offBILLY ENTERPRISES INC01/05/2022
1 project · most recent 01/05/2022
FiledStatusContractorScope
01/05/2022Permit IssuedWCK ELECTRIC CORP.—
Nothing on file for this building.
▾Documents — 2 on file (BIS + DOB NOW)
▸Plans & Drawings1
▸DOB NOWPlans/Sketch1
08/31/2026B00655937-I1Request digital key ↗
▸Seals & Professional Certifications1
▸DOB NOWDPL-1: Design Professional Seal & Signature1
08/13/2026B00655937-I1Open ↗