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Office with commercial, 1-6 stories
Brooklyn Arts Exchange
421 FIFTH AVENUE · Park Slope · BIN 3021879
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1931Year Built
3Stories
O5Building Class
R6AZoning
11,619 sfGross Floor Area
2Units
3 Active Violations 0 unresolved · 3 paperwork only 1 old, status unconfirmed ▸FDNY Report ↗
Office with commercial, 1-6 stories · Owner of record: Miltwill Realty · 3,873 sf lot · 3 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbing
Names shown beside floors are taken automatically from the text of filed documents and may be incomplete or wrong.
RoofBrooklyn Arts Bax45p · 3 filings · 20 docs
Floor 3Brooklyn Arts Bax44p · 3 filings · 20 docs
Floor 2Brooklyn Arts Bax47p · 3 filings · 20 docs
Floor 1Mechanical demolition and installation3p · 1 filing · 3 docs
CellarBrooklyn Arts Bax5p · 3 filings · 20 docs
Site & exteriorMechanical demolition and installation2p · 1 filing · 3 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
Miltwill Realty303/22/2026
Owner of 419-21 5 Avenue103/22/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
TLZ Architecture207/30/2025
Derive Engineers307/22/2025
Silman106/14/2024
Vincent J. Liotta P.E103/15/2023
Island Associates308/16/2022
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
Steve Belsito Sons403/21/2026
J Callahan Consulting1203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
Jesus RenteriaGeneral Contractor603/21/2026
Legacy Builders/DevelopersGeneral Contractor407/08/2026
Mancusi ArmandElectrical103/21/2026
Wise Electric SolutionsElectrical103/21/2026
AL-Arm Advanced ElectricalElectrical103/21/2026
Run Rite Mechanicalspecialty_contractor107/08/2026
Demar MechanicalPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
Ace Structural Engineering496607/30/2025
Vincent J. Liotta P. E1974103/15/2023
Ase Engineering5785208/16/2022
Building Lifecycle
All (86)Filed (10)Permit Issued (7)Signed Off (1)Violation (11)Inspection (5)Objection (22)Special Inspection (30)
11/19/2025
Special inspection requirement — Final
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — Shutoff dampers
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — HVAC-R and service water piping design and insulation
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — Duct leakage testing, insulation and design
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — Maintenance information
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — HVAC-R and service water heating equipment
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — HVAC-R and service water heating system controls
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — Energy Code Compliance Inspections
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — Post-installed Anchors
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — Exhaust and Vent Systems in Plenums and Ducts
ANTHONY UGBEBOR
11/19/2025
Special inspection requirement — Mechanical Systems
ANTHONY UGBEBOR
11/07/2025
Objection resolved — Addressed
08/20/2025
Objection resolved — Addressed
08/20/2025
Objection resolved — Addressed
08/13/2025
Special inspection requirement — Lighting controls
ANTHONY UGBEBOR
08/13/2025
Special inspection requirement — Fire-Resistant Penetrations and Joints
ANTHONY UGBEBOR
08/13/2025
Special inspection requirement — Final
ANTHONY UGBEBOR
08/13/2025
Special inspection requirement — Interior lighting power
ANTHONY UGBEBOR
07/30/2025
Filed — Alteration
Herewith filing interior alteration work on the 2nd and 3rd floors, as per plans submitted. There is no change to use, egress or occupancy under this application.
B01030044-P1
07/29/2025
Objection raised — Admin
07/29/2025
Objection raised — Cost
07/29/2025
Objection raised — Plumbing
07/22/2025
Filed — Alteration
Herewith filing installation of a mechanical system, as per plans submitted. There is no change to use, egress or occupancy under this application.
B01030075-P1
11/15/2024
Special inspection requirement — Fire-Resistant Penetrations and Joints
ANTHONY UGBEBOR
11/15/2024
Special inspection requirement — Lighting controls
ANTHONY UGBEBOR
11/15/2024
Special inspection requirement — Interior lighting power
ANTHONY UGBEBOR
11/15/2024
Special inspection requirement — Final
ANTHONY UGBEBOR
10/30/2024
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
10/25/2024
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
09/25/2024
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
07/30/2024
Permit issued — Plumbing
B01030106-I1-PL
07/23/2024
Permit issued — Structural
B01065111-I1-ST
07/23/2024
Permit issued — Mechanical Systems
B01030075-I1-MS
07/11/2024
Permit issued — General Construction
B01030044-I1-GC
06/21/2024
Special inspection requirement — Structural Steel - Details
ANTHONY UGBEBOR
06/14/2024
Filed — Alteration
B01065111-I1
06/12/2024
Special inspection requirement — Post-installed Anchors
ANTHONY UGBEBOR
06/12/2024
Special inspection requirement — Structural Steel - High Strength Bolting
ANTHONY UGBEBOR
06/12/2024
Special inspection requirement — Structural Steel - Welding
ANTHONY UGBEBOR
06/11/2024
Objection resolved — Addressed
06/11/2024
Objection resolved — Addressed
06/11/2024
Objection resolved — Addressed
06/11/2024
Objection resolved — Addressed
06/11/2024
Objection resolved — Addressed
06/11/2024
Objection resolved — Addressed
06/11/2024
Special inspection requirement — Final
ANTHONY UGBEBOR
06/05/2024
Objection resolved — Addressed
06/05/2024
Objection resolved — Addressed
05/08/2024
Objection raised — Scope
05/08/2024
Objection raised — Scope
05/07/2024
Objection raised — Energy
05/07/2024
Objection raised — Fire_Protection
05/07/2024
Objection raised — Zoning
05/07/2024
Objection raised — Inspections
05/07/2024
Objection raised — Other
05/07/2024
Objection raised — Scope
05/02/2024
Filed — Alteration
Herewith filing installation of a mechanical system, as per plans submitted. There is no change to use, egress or occupancy under this application.
B01030075-I1
05/02/2024
Filed — Alteration
B01030106-I1
05/01/2024
Filed — Alteration
Herewith filing interior alteration work on the 2nd and 3rd floors, as per plans submitted. There is no change to use, egress or occupancy under this application.
B01030044-I1
Latest 60 of 86 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWPlumbingSigned-offDemar Mechanical07/30/2024
DOB NOWStructuralPermit IssuedLegacy Builders/Developer07/23/2024
DOB NOWMechanical SystemsSigned-offLegacy Builders/Developer07/23/2024
DOB NOWGeneral ConstructionSigned-offLegacy Builders/Developer07/11/2024
DOB NOWMechanical SystemsSigned-offRun Rite Mechanical03/15/2023
DOB NOWGeneral ConstructionPermit IssuedJesus Renteria01/26/2023
DOB NOWGeneral ConstructionSigned-offJesus Renteria01/14/2022
BISOTISSUEDCin Con Heating & A/C07/09/1992
BISOTISSUEDCin Con Heating & A/C03/11/1992
1 project · most recent 07/22/2025
Heating and Air Conditioning Systems Heating Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
07/22/2025Signed-offLegacy Builders/DeveloperHeating and Air Conditioning Systems, Heating Systems, Ventilation Systems
Heat / Cool
Mitsubishi Electric MXZ-SM36NAMHZ2-U1 36,000 BTU · Condensing Unit ×4
PUHY-EP144TNU-A 144,000 BTU · Vrf Outdoor ×2
Heating
Tutco EDHS-08 1,145 CFM · Ductwork ×2
EDHS-10 805 CFM · Ductwork ×2
Ventilation
Semco FV-3000 1,950 CFM · Erv ×2
4 projects · most recent 07/17/2024
General Wiring
FiledStatusContractorScope
07/17/2024CompleteUpdate Systems ElectricalGeneral Wiring
03/21/2023CompleteNyco ElectricGeneral Wiring
02/21/2022CompleteR. Strangis Electrical ContractorsGeneral Wiring
10/10/2018CompleteWilldan Electrical of NYGeneral Wiring
▾Field Inspections (DOB CAP) — 5
DateTypeResultReport
10/30/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
10/25/2024Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
09/25/2024Pass-Final PL - Up to 3 Requested FloorsPassView ↗
05/18/2023Pass-Final General Construction Non-Directive 14PassView ↗
05/15/2023Fail-Final General Construction Non-Directive 14FailView ↗
▾Special Inspection Requirements (DOB NOW) — 33
DateRequirementInspectorRole
11/19/2025FinalANTHONY UGBEBORprogress
11/19/2025Shutoff dampersANTHONY UGBEBORenergy_progress
11/19/2025HVAC-R and service water piping design and insulationANTHONY UGBEBORenergy_progress
11/19/2025Duct leakage testing, insulation and designANTHONY UGBEBORenergy_progress
11/19/2025Maintenance informationANTHONY UGBEBORenergy_progress
11/19/2025HVAC-R and service water heating equipmentANTHONY UGBEBORenergy_progress
11/19/2025HVAC-R and service water heating system controlsANTHONY UGBEBORenergy_progress
11/19/2025Energy Code Compliance InspectionsANTHONY UGBEBORprogress
11/19/2025Post-installed AnchorsANTHONY UGBEBORspecial
11/19/2025Fire-Resistant Penetrations and JointsANTHONY UGBEBORspecial
11/19/2025Exhaust and Vent Systems in Plenums and DuctsANTHONY UGBEBORspecial
11/19/2025Mechanical SystemsANTHONY UGBEBORspecial
08/13/2025Lighting controlsANTHONY UGBEBORenergy_progress
08/13/2025Fire-Resistant Penetrations and JointsANTHONY UGBEBORspecial
08/13/2025FinalANTHONY UGBEBORprogress
08/13/2025Interior lighting powerANTHONY UGBEBORenergy_progress
11/15/2024Fire-Resistant Penetrations and JointsANTHONY UGBEBORspecial
11/15/2024Lighting controlsANTHONY UGBEBORenergy_progress
11/15/2024Interior lighting powerANTHONY UGBEBORenergy_progress
11/15/2024FinalANTHONY UGBEBORprogress
06/21/2024Structural Steel - DetailsANTHONY UGBEBORspecial
06/12/2024Post-installed AnchorsANTHONY UGBEBORspecial
06/12/2024Structural Steel - High Strength BoltingANTHONY UGBEBORspecial
06/12/2024Structural Steel - WeldingANTHONY UGBEBORspecial
06/11/2024FinalANTHONY UGBEBORprogress
Latest 25 of 33.
▾Tenants in the building
TenantSpaceFloorsRenovation projects
Brooklyn Arts BaxArts / Culture / EntertainmentFloors 2, 3, Roof
Project B01030075 Alteration · Permit Entire · 05/02/2024
Project B01030106 Alteration · Permit Entire · 05/02/2024
Project B01030044 Alteration · Permit Entire · 05/01/2024
Names are taken automatically from the text of each project’s filed documents (title blocks and cover sheets) and screened to exclude owners, landlords and designers. They may be incomplete or wrong; check the filing.
▾Documents — 65 on file (BIS + DOB NOW)
▸Plans & Drawings10
▸DOB NOWPlans/Sketch10
09/01/2026B00535022-I1Request digital key ↗
08/28/2026B00617026-I1Request digital key ↗
08/28/2026B00617026-P1Request digital key ↗
Showing 3 of 10 on file for this type
▸Applications & Permits1
▸BISPLAN / WORK APPROVAL APPLICATION1
05/20/2010320160614Open ↗
▸Seals & Professional Certifications41
▸DOB NOWProgress Inspector Seal & Signature18
09/01/2026B00617026-I1Open ↗
09/01/2026B00617026-I1Open ↗
08/29/2026B01065111-I1Open ↗
Showing 3 of 18 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature12
09/01/2026B00617026-I1Open ↗
08/29/2026B01065111-I1Open ↗
08/29/2026B01065111-I1Open ↗
Showing 3 of 12 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature10
09/01/2026B00535022-I1Open ↗
08/28/2026B00617026-P1Open ↗
08/28/2026B00617026-I1Open ↗
Showing 3 of 10 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION1
05/20/2010320160614Open ↗
▸Environmental & Asbestos8
▸DOB NOWDEP ACP-5: Asbestos Assessment Report7
08/25/2026B01030075-I1Open ↗
08/25/2026B01030106-I1Open ↗
08/21/2026B01030044-P1Open ↗
Showing 3 of 7 on file for this type
▸BISTHIS IS 'NOT AN ASBESTOS PROJECT'1
05/20/2010320160614Open ↗
▸Energy Compliance1
▸DOB NOWEN2: As Built Energy Analysis.1
08/13/2026B00617026-I1Open ↗
▸Approvals, Objections & Sign-offs1
▸BISADMINISTRATIVE OBJECTIONS1
05/20/2010320160614Open ↗
▸Cost, Insurance & Ownership2
▸BISCOST AFFIDAVIT2
05/20/2010320160614Open ↗
05/20/2010320160614Open ↗
▸Filing & Intake Forms1
▸BISEFILING COVER SHEET1
05/20/2010320160614Open ↗