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Two family converted from one family
820 UNION STREET
BROOKLYN · BIN 3024633
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1885Year Built
3Stories
B3Building Class
R7BZoning
4,200 sfGross Floor Area
2Units
1 Open Violation ▸FDNY Report ↗
Two family converted from one family · Owner of record: 820 UNION LLC · 1,995 sf lot · 2.11 FAR built · Flood zone X
Locations of Work
ArchitectureMechanical
Roof19p · 1 filing · 20 docs
Floor 320p · 1 filing · 20 docs
Floor 221p · 1 filing · 20 docs
Floor 120p · 1 filing · 20 docs
Sub-Basement19p · 1 filing · 20 docs
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
08/01/2024$5.0M—— → —$1,179/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
GREEN SOLUTIONS ENGINEERING & ENERG108/19/2025
REBUILD ARCHITECTURE411/20/2024
NY BUILDING ASSOCIATES INC111/19/2024
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
THE VILNITS GROUP LLC1003/21/2026
BROOKLYN SOLARWORKS103/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
NET ZERO BUILD INCGeneral Contractor603/21/2026
ANTONIO CERIELLO ELEC INCElectrical103/22/2026
BROOKLYN SOLARWORKS LLCGeneral Contractor107/08/2026
DYNAMIC BLUE WATER MECHPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
THE VILNITS GROUP LLC1223508/19/2025
NKM ENGINEERING PLLC6244111/19/2024
Building Lifecycle
All (34)Filed (6)Permit Issued (4)Signed Off (1)Violation (3)Inspection (2)Special Inspection (18)
08/20/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
ILYA VILNITS
08/19/2025
Filed — Alteration
PLUMBING WORK IN CONJUNCTION WITH BUILDING RENOVATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
B01099194-P2
08/14/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
ILYA VILNITS
03/11/2025
Inspection — Certified Gas-Gas-Piping-Roughing
Certified
View inspection ↗
03/11/2025
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
02/14/2025
Signed off — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01141998-I1
02/05/2025
Permit issued — Mechanical Systems
B01099194-S2-MS
11/29/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
ILYA VILNITS
11/29/2024
Special inspection requirement — Fire-Resistance Rated Construction
ILYA VILNITS
11/29/2024
Special inspection requirement — Final
ILYA VILNITS
11/29/2024
Special inspection requirement — Structural Stability – Alterations of existing buildings
11/22/2024
Permit issued — Solar
B01141998-I1-SL
11/20/2024
Filed — Alteration
PLUMBING WORK IN CONJUNCTION WITH BUILDING RENOVATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
B01099194-S2
11/20/2024
Filed — Alteration
PLUMBING WORK IN CONJUNCTION WITH BUILDING RENOVATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
B01099194-P1
11/20/2024
Special inspection requirement — Fire-Resistance Rated Construction
ILYA VILNITS
11/20/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
ILYA VILNITS
11/20/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
ILYA VILNITS
11/20/2024
Special inspection requirement — Final
ILYA VILNITS
11/20/2024
Special inspection requirement — Structural Stability – Alterations of existing buildings
11/20/2024
Special inspection requirement — Mechanical Systems
ILYA VILNITS
11/20/2024
Special inspection requirement — Final
ILYA VILNITS
11/19/2024
Filed — Alteration
INSTALLATION OF SOLAR PV SYSTEM. NO CHANGE TO USE, EGRESS, OR OCCUPANCY.
B01141998-I1
11/13/2024
Special inspection requirement — Air barrier - visual inspection
NARESH MAHANGU
11/13/2024
Special inspection requirement — Final
NARESH MAHANGU
11/13/2024
Special inspection requirement — Energy Code Compliance Inspections
NARESH MAHANGU
11/13/2024
Special inspection requirement — Structural Stability – Alterations of existing buildings
NARESH MAHANGU
11/13/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
NARESH MAHANGU
11/04/2024
Permit issued — Plumbing
B01099194-S1-PL
10/29/2024
Filed — Alteration
PLUMBING WORK IN CONJUNCTION WITH BUILDING RENOVATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
B01099194-S1
09/05/2024
Permit issued — General Construction
B01099194-I1-GC
08/20/2024
Filed — Alteration
PLUMBING WORK IN CONJUNCTION WITH BUILDING RENOVATION. NO CHANGE TO USE, EGRESS OR OCCUPANCY.
B01099194-I1
08/16/1993
Violation issued (DOB, open)
V-DOB VIOLATION - ACTIVE
09/25/1987
Violation issued (HPD, closed)
B
07/16/1987
Violation issued (HPD, closed)
B
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWMechanical SystemsPermit IssuedNET ZERO BUILD INC02/05/2025
DOB NOWSolarSigned-offBROOKLYN SOLARWORKS LLC11/22/2024
DOB NOWPlumbingSigned-offSUPER PLUMBERS CORP11/04/2024
DOB NOWGeneral ConstructionPermit IssuedNET ZERO BUILD INC09/05/2024
BISPLISSUEDHENRY MYERS PLBG & HTG03/20/2003
BISPLISSUEDHENRY MYERS PLBG & HTG03/20/2003
BISOTISSUEDBRISTOL CONSTRUCTION05/20/2002
1 project · most recent 08/19/2025
Gas Water/Sanitary
FiledStatusContractorScope
08/19/2025Signed-offSUPER PLUMBERS CORPGas, Water/Sanitary
2 projects · most recent 11/14/2024
General Wiring
FiledStatusContractorScope
11/14/2024CompleteBROOKYLN SOLARWORKS, LLC—
09/19/2024Permit IssuedANTONIO CERIELLO ELEC INCGeneral Wiring
▾Field Inspections (DOB CAP) — 2
DateTypeResultReport
03/11/2025Certified Gas-Gas-Piping-RoughingCertifiedView ↗
03/11/2025Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 18
DateRequirementInspectorRole
08/20/2025Fire-Resistant Penetrations and JointsILYA VILNITSspecial
08/14/2025Fire-Resistant Penetrations and JointsILYA VILNITSspecial
11/29/2024Fire-Resistant Penetrations and JointsILYA VILNITSspecial
11/29/2024Fire-Resistance Rated ConstructionILYA VILNITSprogress
11/29/2024FinalILYA VILNITSprogress
11/29/2024Structural Stability – Alterations of existing buildings—special
11/20/2024Fire-Resistance Rated ConstructionILYA VILNITSprogress
11/20/2024Fire-Resistant Penetrations and JointsILYA VILNITSspecial
11/20/2024Fire-Resistant Penetrations and JointsILYA VILNITSspecial
11/20/2024FinalILYA VILNITSprogress
11/20/2024Structural Stability – Alterations of existing buildings—special
11/20/2024Mechanical SystemsILYA VILNITSspecial
11/20/2024FinalILYA VILNITSprogress
11/13/2024Air barrier - visual inspectionNARESH MAHANGUenergy_progress
11/13/2024FinalNARESH MAHANGUprogress
11/13/2024Energy Code Compliance InspectionsNARESH MAHANGUprogress
11/13/2024Structural Stability – Alterations of existing buildingsNARESH MAHANGUspecial
11/13/2024Fire-Resistant Penetrations and JointsNARESH MAHANGUspecial
▾Documents — 38 on file (BIS + DOB NOW)
▸Plans & Drawings6
▸DOB NOWPlans/Sketch6
08/23/2026B01141998-I1Request digital key ↗
08/23/2026B01099194-I1Request digital key ↗
08/23/2026B01099194-P2Request digital key ↗
Showing 3 of 6 on file for this type
▸Applications & Permits6
▸DOB NOWLPC Approval/Permit6
08/13/2026B01099194-P2Open ↗
08/13/2026B01141998-I1Open ↗
08/13/2026B01099194-I1Open ↗
Showing 3 of 6 on file for this type
▸Seals & Professional Certifications17
▸DOB NOWDPL-1: Design Professional Seal & Signature6
08/23/2026B01099194-P1Open ↗
08/23/2026B01099194-P2Open ↗
08/23/2026B01099194-S2Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature6
09/02/2026B01099194-P2Open ↗
08/29/2026B01099194-S1Open ↗
08/28/2026B01099194-P1Open ↗
Showing 3 of 6 on file for this type
▸DOB NOWProgress Inspector Seal & Signature5
08/28/2026B01099194-P1Open ↗
08/27/2026B01099194-S2Open ↗
08/25/2026B01141998-I1Open ↗
Showing 3 of 5 on file for this type
▸Environmental & Asbestos6
▸DOB NOWDEP ACP-5: Asbestos Assessment Report6
08/23/2026B01099194-P2Open ↗
08/23/2026B01099194-P1Open ↗
08/23/2026B01099194-S2Open ↗
Showing 3 of 6 on file for this type
▸Approvals, Objections & Sign-offs1
▸DOB NOWUtility Company Final Acceptance Letter1
08/13/2026B01141998-I1Open ↗
▸Other Documents2
▸DOB NOWProof of Historic Building2
08/13/2026B01099194-P1Open ↗
08/13/2026B01099194-I1Open ↗