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Factory, light manufacturing
421 TROUTMAN STREET
BROOKLYN · Bushwick (West) · BIN 3413932
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1931Year Built
1Stories
F5Building Class
M1-1Zoning
9,988 sfGross Floor Area
1Units
0 Open ViolationsFDNY Report ↗
Factory, light manufacturing · Owner of record: TROUTMAN STREET HOLDINGS LLC · 9,988 sf lot · 1 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbingGeneral
Roof8p · 1 filing · 20 docs
Floor 13p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
TROUTMAN STREET HOLDINGS, LLC503/21/2026
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
ENGINEERING SOLUTIONS608/10/2026
SILMAN308/10/2026
COMMONCRAFT ARCHITECTURE PLLC105/16/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
BMB BUILDING CONSULTING203/21/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
AMERICAN CONSTRUCTION TES9731308/10/2026
RYAN SPECIAL ENGINEERING2018808/10/2026
Building Lifecycle
All (60)Filed (10)Violation (2)Objection (18)Special Inspection (30)
08/25/2026
Objection resolved — Addressed
08/21/2026
Special inspection requirement — Final
EDWIN HOPKINS
08/21/2026
Special inspection requirement — Masonry
EDWIN HOPKINS
08/21/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
EDWIN HOPKINS
08/21/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
William Ryan
08/21/2026
Special inspection requirement — Structural Steel - Welding
EDWIN HOPKINS
08/21/2026
Special inspection requirement — Post-installed anchors in masonry
William Ryan
08/21/2026
Special inspection requirement — HVAC-R and service water heating equipment
William Ryan
08/21/2026
Special inspection requirement — Concrete - Cast-In-Place
William Ryan
08/21/2026
Special inspection requirement — Maintenance information
William Ryan
08/21/2026
Special inspection requirement — Energy Code Compliance Inspections
William Ryan
08/21/2026
Special inspection requirement — HVAC-R and service water heating system controls
William Ryan
08/21/2026
Special inspection requirement — Structural Steel - Details
EDWIN HOPKINS
08/21/2026
Special inspection requirement — Structural Steel - High Strength Bolting
EDWIN HOPKINS
08/19/2026
Objection raised — Energy
08/10/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-S6
08/10/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-P2
08/10/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-P4
08/10/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-P3
08/07/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-P1
08/05/2026
Special inspection requirement — Structural Steel - Welding
EDWIN HOPKINS
08/05/2026
Special inspection requirement — Structural Steel - High Strength Bolting
EDWIN HOPKINS
08/05/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
EDWIN HOPKINS
08/05/2026
Special inspection requirement — Concrete - Cast-In-Place
William Ryan
08/05/2026
Special inspection requirement — Structural Steel - Details
EDWIN HOPKINS
08/04/2026
Special inspection requirement — HVAC-R and service water heating system controls
William Ryan
08/04/2026
Special inspection requirement — HVAC-R and service water heating equipment
William Ryan
08/04/2026
Special inspection requirement — Energy Code Compliance Inspections
William Ryan
08/04/2026
Special inspection requirement — Maintenance information
William Ryan
08/04/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
William Ryan
06/18/2026
Special inspection requirement — HVAC-R and service water heating system controls
William Ryan
06/18/2026
Special inspection requirement — Shutoff dampers
William Ryan
06/18/2026
Special inspection requirement — Final
William Ryan
06/18/2026
Special inspection requirement — Energy Code Compliance Inspections
William Ryan
06/18/2026
Special inspection requirement — Mechanical Systems
William Ryan
06/18/2026
Special inspection requirement — Final
EDWIN HOPKINS
06/18/2026
Special inspection requirement — Structural Steel - Welding
EDWIN HOPKINS
04/07/2026
Objection raised — Energy
04/07/2026
Objection raised — Energy
04/07/2026
Objection resolved — Resolved
03/27/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-S4
03/27/2026
Objection raised — Energy
03/25/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-S2
03/25/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-S1
03/25/2026
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-S3
03/25/2026
Objection resolved — Addressed
03/25/2026
Objection resolved — Addressed
03/25/2026
Objection resolved — Resolved
03/25/2026
Objection resolved — Resolved
03/25/2026
Objection resolved — Addressed
03/25/2026
Objection resolved — Resolved
05/27/2025
Objection raised — Plumbing
05/27/2025
Objection raised — Admin
05/27/2025
Objection raised — Admin
05/27/2025
Objection raised — Zoning
05/27/2025
Objection raised — Admin
05/27/2025
Objection raised — Admin
05/16/2025
Filed — Alteration CO
Structural work includes partial roof replacement over the stage area; installation of dunnage to support MEP equipment; new wall opening along the Troutman street facade; minor repair or replacement per plan filed in conjunction with GC # B01206768-I1
B01206768-I1
12/13/2011
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
03/16/1999
Violation issued (DOB, closed)
V*-DOB VIOLATION - DISMISSED
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
BISMHISSUEDA&A BUILDING CONSULTANTS06/07/2013
BISMHISSUEDA&A BUILDING CONSULTANTS02/12/2013
BIS—ISSUEDA&A BUILDING CONSULTANTS07/26/2012
BISOTISSUEDJ & K CONSTRUCTION CONSULTANT IN09/08/2000
BISPLISSUEDCATMAN PLUMBING INC09/08/2000
1 project · most recent 08/10/2026
Heating and Air Conditioning Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
08/10/2026——Heating and Air Conditioning Systems, Ventilation Systems
Heat / Cool
Mitsubishi Electric PEFY-P54NMAU 60,000 BTU · Vrf Indoor ×2
PUMY-P60NKMU 66,000 BTU · Vrf Outdoor ×2
Ventilation
Task Applied Products TYU283RT-MB-NG 10,500 CFM · Rooftop Unit ×2
TYU153RT-MB-NG 5,250 CFM · Rooftop Unit ×4
1 project · most recent 08/10/2026
Sprinkler System
FiledStatusContractorScope
08/10/2026——Sprinkler System
1 project · most recent 08/10/2026
Gas Storm Water/Sanitary
FiledStatusContractorScope
08/10/2026——Gas, Storm, Water/Sanitary
1 project · most recent 08/10/2026
Steel Concrete Masonry
FiledStatusContractorScope
08/10/2026——Steel, Concrete, Masonry
▾Special Inspection Requirements (DOB NOW) — 64
DateRequirementInspectorRole
08/21/2026HVAC-R and service water heating system controlsWilliam Ryanenergy_progress
08/21/2026HVAC-R and service water heating equipmentWilliam Ryanenergy_progress
08/21/2026Structural Steel - DetailsEDWIN HOPKINSspecial
08/21/2026Structural Stability – Alterations of existing buildingsEDWIN HOPKINSspecial
08/21/2026Concrete - Cast-In-PlaceWilliam Ryanspecial
08/21/2026Post-installed anchors in masonryWilliam Ryanspecial
08/21/2026Structural Steel - High Strength BoltingEDWIN HOPKINSspecial
08/21/2026MasonryEDWIN HOPKINSspecial
08/21/2026Structural Steel - WeldingEDWIN HOPKINSspecial
08/21/2026FinalEDWIN HOPKINSprogress
08/21/2026HVAC-R and service water piping design and insulationWilliam Ryanenergy_progress
08/21/2026Energy Code Compliance InspectionsWilliam Ryanprogress
08/21/2026Maintenance informationWilliam Ryanenergy_progress
08/05/2026Structural Steel - High Strength BoltingEDWIN HOPKINSspecial
08/05/2026Structural Steel - DetailsEDWIN HOPKINSspecial
08/05/2026Structural Steel - WeldingEDWIN HOPKINSspecial
08/05/2026Concrete - Cast-In-PlaceWilliam Ryanspecial
08/05/2026Structural Stability – Alterations of existing buildingsEDWIN HOPKINSspecial
08/04/2026HVAC-R and service water piping design and insulationWilliam Ryanenergy_progress
08/04/2026HVAC-R and service water heating system controlsWilliam Ryanenergy_progress
08/04/2026Maintenance informationWilliam Ryanenergy_progress
08/04/2026Energy Code Compliance InspectionsWilliam Ryanprogress
08/04/2026HVAC-R and service water heating equipmentWilliam Ryanenergy_progress
06/18/2026Footing and FoundationEDWIN HOPKINSprogress
06/18/2026Concrete - Cast-In-PlaceWilliam Ryanspecial
Latest 25 of 64.
▾Documents — 106 on file (BIS + DOB NOW)
▸Plans & Drawings10
▸DOB NOWPlans/Sketch10
08/17/2026B01206768-I1Request digital key ↗
08/17/2026B01206768-S1Request digital key ↗
08/17/2026B01206768-P3Request digital key ↗
Showing 3 of 10 on file for this type
▸Applications & Permits12
▸BISPLAN / WORK APPROVAL APPLICATION9
08/21/2020340745340Open ↗
06/12/2014320471994Open ↗
05/27/2014320471994Open ↗
Showing 3 of 9 on file for this type
▸BISWORK PERMIT APPLICATION2
02/13/2013320715650Open ↗
07/27/2012320471994Open ↗
▸BISCERTIFICATE OF OCCUPANCY: APPLICATION1
06/10/2014320471994Open ↗
▸Zoning, Tax Lot & Property Records5
▸DOB NOWZD1: DOB Zoning Diagram2
08/17/2026B01206768-I1Open ↗
08/13/2026B01206768-I1Open ↗
▸BISTAX LOT- TENTATIVE LOT NUMBER ISSUED1
05/04/2012320471994Open ↗
▸DOB NOWZoning Exhibit form (1-5)1
08/13/2026B01206768-I1Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026B01206768-I1Open ↗
▸Seals & Professional Certifications29
▸DOB NOWDPL-1: Design Professional Seal & Signature10
08/17/2026B01206768-P2Open ↗
08/17/2026B01206768-P1Open ↗
08/17/2026B01206768-S2Open ↗
Showing 3 of 10 on file for this type
▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION6
06/13/2014320471994Open ↗
08/22/2013320758630Open ↗
02/13/2013320715650Open ↗
Showing 3 of 6 on file for this type
▸BISPROFESSIONAL CERTIFICATION STATEMENT FORM4
06/03/2013320758630Open ↗
02/13/2013320715650Open ↗
07/27/2012320471994Open ↗
Showing 3 of 4 on file for this type
▸BISPROFESSIONAL CERTIFIED CHECKLIST4
06/03/2013320758630Open ↗
02/13/2013320715650Open ↗
07/27/2012320471994Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature2
08/29/2026B01206768-P1Open ↗
08/23/2026B01206768-S4Open ↗
▸BISPROFESSIONAL CERTIFICATION STATEMENT1
08/21/2020340745340Open ↗
▸BISREQUIRED ITEMS CHECKLIST FOR PROFESSIONAL CERTIFICATION1
08/21/2020340745340Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1
08/21/2020340745340Open ↗
▸Trade Schedules & Equipment3
▸BISEQUIPMENT USE APPLICATION-PERMIT3
04/08/2013320715650Open ↗
04/08/2013320715650Open ↗
04/08/2013320715650Open ↗
▸Safety & Tenant Protection3
▸BISSTREET TREE CHECKLIST2
07/27/2012320471994Open ↗
05/04/2012320471994Open ↗
▸DOB NOWStreet Tree Checklist1
08/17/2026B01206768-I1Open ↗
▸Environmental & Asbestos2
▸BISASBESTOS: CERTIFICATION (DEP ACP5)2
08/21/2020340745340Open ↗
02/13/2013320715650Open ↗
▸Energy Compliance9
▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS5
06/13/2014320471994Open ↗
08/22/2013320758630Open ↗
06/03/2013320758630Open ↗
Showing 3 of 5 on file for this type
▸BISAS-BUILT ENERGY ANALYSIS2
06/13/2014320471994Open ↗
04/08/2013320715650Open ↗
▸BISTECHNICAL REPORT: ENERGY1
05/04/2012320471994Open ↗
▸BISTR8: Energy Code Progress Inspections1
04/08/2013320715650Open ↗
▸Inspections & Test Reports1
▸BISTECHNICAL REPORT: RESPONSIBILITY1
08/21/2020340745340Open ↗
▸Approvals, Objections & Sign-offs11
▸BISSCHEDULE A - OCCUPANCY / USE4
02/14/2014320471994Open ↗
07/27/2012320471994Open ↗
05/04/2012320471994Open ↗
Showing 3 of 4 on file for this type
▸BISADMINISTRATIVE OBJECTIONS2
02/13/2013320715650Open ↗
05/04/2012320471994Open ↗
▸BISThird Party Electrical Signoff Compliance Report2
08/22/2013320758630Open ↗
04/08/2013320715650Open ↗
▸BISCERTIFICATE OF OCCUPANCY - LOC: REQUEST2
04/08/2013320715650Open ↗
08/22/2013320758630Open ↗
▸BISLETTERS - SUPPORTING DOCUMENTATION1
06/13/2014320471994Open ↗
▸Cost, Insurance & Ownership8
▸BISCOST AFFIDAVIT8
08/21/2020340745340Open ↗
07/12/2014320471994Open ↗
08/22/2013320758630Open ↗
Showing 3 of 8 on file for this type
▸Filing & Intake Forms6
▸BISEFILING COVER SHEET3
05/22/2013320758630Open ↗
02/14/2013320715650Open ↗
05/04/2012320471994Open ↗
▸BISADDITIONAL INFORMATION2
12/03/2012320471994Open ↗
07/27/2012320471994Open ↗
▸BISEFILING JOB APPLICATION COVER SHEET1
08/21/2020340745340Open ↗
▸Other Documents7
▸BISPLOT DIAGRAM2
06/13/2014320471994Open ↗
05/04/2012320471994Open ↗
▸DOB NOWPlot Diagram2
08/17/2026B01206768-S6Open ↗
08/13/2026B01206768-I1Open ↗
▸DOB NOWSite Survey: Initial1
08/13/2026B01206768-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/13/2026B01206768-I1Open ↗
▸DOB NOWProperty Ownership Certification1
08/17/2026B01206768-I1Open ↗