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Primarily 3 family with 1 store or office
421 THROOP AVENUE
BROOKLYN · BIN 3050770
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1931Year Built
3Stories
S3Building Class
R6BZoning
—Gross Floor Area
4Units
3 Open Violations ▸FDNY Report ↗
Primarily 3 family with 1 store or office · Owner of record: 818 PROSPECT LLC · 2.34 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
818 PROSPECT LLC303/22/2026
NHS COMMUNITY DEVELOPMENT303/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
ROOPCHAND SINGHElectrical103/21/2026
Building Lifecycle
All (25)Violation (25)
11/14/2025
Violation issued (DOB, open)
V-DOB VIOLATION - ACTIVE
03/02/2022
Violation issued (HPD, closed)
A
04/13/2021
Violation issued (HPD, closed)
A
03/16/2021
Violation issued (ECB, closed)
Boilers
03/16/2021
Violation issued (ECB, closed)
Boilers
03/16/2021
Violation issued (ECB, closed)
Boilers
04/27/2017
Violation issued (ECB, closed)
Construction
11/15/2016
Violation issued (HPD, closed)
I
11/13/2016
Violation issued (HPD, open)
B
10/14/2015
Violation issued (HPD, closed)
I
03/03/2015
Violation issued (DOB, open)
V-DOB VIOLATION - ACTIVE
02/27/2015
Violation issued (ECB, closed)
Construction
03/15/2010
Violation issued (FDNY_NOV, closed)
01/19/2007
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
02/27/2001
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
02/27/2001
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
02/07/2000
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
02/07/2000
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
03/16/1999
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
03/16/1999
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
05/04/1998
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
09/16/1997
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
08/29/1995
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
08/29/1995
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
07/25/1994
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
BIS—ISSUEDCB S GENERAL CONTRNG10/26/2004
BISPLISSUEDW.G.PLBG & HTNG09/29/2004
BIS—ISSUEDCB S GENERAL CONTRNG05/11/2004
BISPLISSUEDBETA PLBG & HTG INC01/07/2002
BIS—ISSUEDCBS GENERAL CONTRACTING12/14/2001
BISBLISSUEDBAY RIDGE INC.04/19/2001
BIS—ISSUEDCENTRAL DEVELOPMENT CORP11/28/2000
BISPLISSUEDTHEODORE WAGNER PLUMBING HEATING08/07/2000
BISEQISSUEDCENTRAL DEVELOPMENT CORP07/27/2000
BISOTISSUEDJ.M.R. CONSTRUCTION CO.02/20/1996
Nothing on file for this building.
Nothing on file for this building.
Nothing on file for this building.