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Five to six families
621 UNION AVENUE
BROOKLYN · BIN 3061572
💬 Discuss this project
1910Year Built
3Stories
C2Building Class
M1-2/R6AZoning
4,125 sfGross Floor Area
5Units
Rent Stabilized10 Open Violations ▸FDNY Report ↗
Five to six families · Owner of record: ARLIND ORG LLC · 2,550 sf lot · 1.62 FAR built · Flood zone X500
Locations of Work
ArchitecturePlumbing
Permit Issued — active, not yet Signed-off
RoofUnder Construction12p · 1 filing · 20 docs
Floor 6Under Construction11p · 1 filing · 20 docs
Floor 5Under Construction9p · 1 filing · 20 docs
Floor 4Under Construction9p · 1 filing · 20 docs
Floor 3Under Construction11p · 1 filing · 20 docs
Floor 2Under Construction12p · 1 filing · 20 docs
Floor 1Under Construction12p · 2 filings · 20 docs
Cellar1p · 1 filing · 2 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
ARLIND ORG LLC103/22/2026
LBM CONSTRUCTION OF NY103/22/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
04/14/2022$4.5M—621/623 UNION AVE LLC → ARLIND ORG LLC$1,091/sf building
▾Design Consultants (Architect / Engineer of Record)
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
CSR EXPEDITERS103/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
LBM CONSTRUCTION OF NY INGeneral Contractor809/18/2026
PHOENIX SUTTON STR INCGeneral Contractor309/19/2026
RICHARD NEUElectrical103/22/2026
P.S.I. MECHANICALPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
INTERNATIONAL GEOTEHCNICA1795106/12/2026
STRUCT. ENGINEERING INTEG4174508/04/2025
PAPER PLANE ARCHITECTURE,7155105/17/2022
Building Lifecycle
All (110)Filed (10)Permit Issued (9)Violation (16)Objection (45)Special Inspection (30)
09/18/2026
Permit issued — Sidewalk Shed
B01280878-I1-SH
09/17/2026
Permit issued — Supported Scaffold
B01090881-S8-SF
06/29/2026
Objection resolved — Resolved
06/12/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
TO ERECT TEMPORARY FENCE FOR CONSTRUCTION.
B01090881-S8
06/11/2026
Special inspection requirement — Post-installed Anchors
MICHAEL KARANTINIDIS, P.E.
05/21/2026
Violation issued (ECB, open)
Unknown
05/12/2026
Objection resolved — Addressed
05/06/2026
Violation issued (HPD, open)
A
04/20/2026
Permit issued — Plumbing
B01090881-S2-PL
04/17/2026
Objection raised — Other
04/17/2026
Objection raised — Energy
04/03/2026
Filed — ALT-CO - New Building with Existing Elements to Remain
TO ERECT TEMPORARY FENCE FOR CONSTRUCTION.
B01090881-S5
04/02/2026
Special inspection requirement — HVAC-R and service water heating equipment
04/02/2026
Special inspection requirement — HVAC-R and service water heating system controls
04/02/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
04/02/2026
Special inspection requirement — Shutoff dampers
01/14/2026
Violation issued (ECB, open)
Construction
12/29/2025
Permit issued — General Construction
B01090881-I1-GC
11/24/2025
Permit issued — General Construction
B01090881-I1-GC
11/19/2025
Violation issued (HPD, open)
I
10/16/2025
Objection resolved — Addressed
10/16/2025
Objection resolved — Addressed
10/16/2025
Objection resolved — Addressed
09/24/2025
Permit issued — General Construction
B01090881-I1-GC
09/09/2025
Filed — Alteration
INSTALLATION OF TEMPORARY HEAVY DUTY SIDEWALK SHED AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY. SIDEWALK SHED SHALL COMPLY WITH CHAPTER #33 OF 2022 THE NYC BUILDING CODE. LIVE LOAD 300PSF.
B01280878-I1
09/09/2025
Permit issued — Sidewalk Shed
B01280878-I1-SH
09/08/2025
Permit issued — General Construction
B01090881-I1-GC
09/05/2025
Objection resolved — Addressed
09/04/2025
Permit issued — Construction Fence
B01090881-S6-FN
08/22/2025
Objection raised — Fire_Protection
08/22/2025
Objection raised — Fire_Protection
08/22/2025
Objection raised — Fire_Protection
08/21/2025
Objection raised — Other
08/12/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
TO ERECT TEMPORARY FENCE FOR CONSTRUCTION.
B01090881-S6
08/04/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
TO ERECT TEMPORARY FENCE FOR CONSTRUCTION.
B01090881-S2
08/04/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
TO ERECT TEMPORARY FENCE FOR CONSTRUCTION.
B01090881-S7
07/31/2025
Special inspection requirement — Sprinkler Systems
07/30/2025
Objection raised — Zoning
07/30/2025
Objection resolved — Addressed
07/11/2025
Objection resolved — Addressed
07/11/2025
Objection resolved — Addressed
07/11/2025
Objection resolved — Addressed
07/11/2025
Objection resolved — Addressed
07/11/2025
Special inspection requirement — Subsurface Investigations (Borings/Test Pits)
06/11/2025
Violation issued (HPD, open)
A
05/13/2025
Objection resolved — Addressed
05/13/2025
Objection resolved — Addressed
04/28/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
04/15/2025
Objection raised — Zoning
04/14/2025
Objection raised — Structural
04/14/2025
Objection raised — Admin
04/14/2025
Objection raised — Admin
04/14/2025
Objection raised — Structural
04/01/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
TO ERECT TEMPORARY FENCE FOR CONSTRUCTION.
B01090881-S4
04/01/2025
Filed — ALT-CO - New Building with Existing Elements to Remain
TO ERECT TEMPORARY FENCE FOR CONSTRUCTION.
B01090881-S3
04/01/2025
Special inspection requirement — Mechanical Systems
04/01/2025
Special inspection requirement — Final
03/31/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
Chris Yiu
03/31/2025
Special inspection requirement — Structural Stability – Alterations of existing buildings
Chris Yiu
03/31/2025
Special inspection requirement — Masonry
Chris Yiu
Latest 60 of 110 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSidewalk ShedPermit IssuedPHOENIX SUTTON STR INC09/18/2026
DOB NOWSupported ScaffoldPermit IssuedLBM CONSTRUCTION OF NY IN09/17/2026
DOB NOWPlumbingPermit IssuedP.S.I. MECHANICAL04/20/2026
DOB NOWGeneral ConstructionPermit IssuedLBM CONSTRUCTION OF NY IN12/29/2025
DOB NOWGeneral ConstructionPermit IssuedLBM CONSTRUCTION OF NY IN11/24/2025
DOB NOWGeneral ConstructionPermit IssuedLBM CONSTRUCTION OF NY IN09/24/2025
DOB NOWSidewalk ShedPermit IssuedPHOENIX SUTTON STR INC09/09/2025
DOB NOWGeneral ConstructionPermit IssuedLBM CONSTRUCTION OF NY IN09/08/2025
DOB NOWConstruction FencePermit IssuedLBM CONSTRUCTION OF NY IN09/04/2025
1 project · most recent 06/12/2026
Heating and Air Conditioning Systems Ventilation Systems
FiledStatusContractorScopeMake / Model / Capacity
06/12/2026Permit IssuedLBM CONSTRUCTION OF NY INHeating and Air Conditioning Systems, Ventilation Systems
Heat / Cool
Gree #MXZ-2C20NA2 22,000 BTU · Heat Pump Outdoor ×10
Ventilation
N/A N/A 50 CFM · Exhaust Fan ×11
NA 150 CFM · Kitchen Exhaust ×9
1 project · most recent 06/12/2026
Sprinkler System
FiledStatusContractorScope
06/12/2026——Sprinkler System
1 project · most recent 06/12/2026
Storm Water/Sanitary
FiledStatusContractorScope
06/12/2026Permit IssuedP.S.I. MECHANICALStorm, Water/Sanitary
3 projects · most recent 08/04/2026
General Wiring
FiledStatusContractorScope
08/04/2026Permit IssuedNEWBRIDGE ELECTL CONTNGGeneral Wiring
10/20/2025Permit IssuedTRIPLE H ELECTRICAL CORPGeneral Wiring
09/09/2025Permit IssuedRICHARD NEU—
1 project · most recent 06/12/2026
Steel Concrete Masonry
FiledStatusContractorScope
06/12/2026Permit IssuedLBM CONSTRUCTION OF NY INSteel, Concrete, Masonry
2 projects · most recent 06/12/2026
Fence Scaffold Sidewalk Shed
FiledStatusContractorScope
06/12/2026Permit IssuedLBM CONSTRUCTION OF NY INFence, Scaffold
09/09/2025Permit IssuedPHOENIX SUTTON STR INCSidewalk Shed
▾Special Inspection Requirements (DOB NOW) — 34
DateRequirementInspectorRole
06/11/2026Post-installed AnchorsMICHAEL KARANTINIDIS, P.E.special
04/02/2026HVAC-R and service water heating equipment—energy_progress
04/02/2026HVAC-R and service water heating system controls—energy_progress
04/02/2026HVAC-R and service water piping design and insulation—energy_progress
04/02/2026Shutoff dampers—energy_progress
07/31/2025Sprinkler Systems—special
07/11/2025Subsurface Investigations (Borings/Test Pits)—special
04/28/2025Structural Stability – Alterations of existing buildings—special
04/01/2025Mechanical Systems—special
04/01/2025Final—progress
03/31/2025Structural Stability – Alterations of existing buildingsChris Yiuspecial
03/31/2025Structural Stability – Alterations of existing buildingsChris Yiuspecial
03/31/2025MasonryChris Yiuspecial
03/31/2025Structural Cold-Formed SteelChris Yiuspecial
03/31/2025Structural Steel - DetailsChris Yiuspecial
03/31/2025Structural Steel - High Strength BoltingChris Yiuspecial
03/31/2025Structural Steel - WeldingChris Yiuspecial
03/31/2025Concrete - Cast-In-PlaceChris Yiuspecial
03/31/2025Subgrade InspectionsChris Yiuspecial
03/31/2025Concrete - Cast-In-PlaceChris Yiuspecial
03/29/2025FinalChris Yiuprogress
03/29/2025FinalChris Yiuprogress
03/29/2025Footing and FoundationChris Yiuprogress
05/14/2022Interior lighting powerJaniel Collaqienergy_progress
05/14/2022Fenestration and door U-factor and product ratingsJaniel Collaqienergy_progress
Latest 25 of 34.
▾Documents — 70 on file (BIS + DOB NOW)
▸Plans & Drawings10
▸DOB NOWPlans/Sketch10
08/29/2026B00737641-I1Request digital key ↗
08/21/2026B01090881-S8Request digital key ↗
08/21/2026B01090881-S7Request digital key ↗
Showing 3 of 10 on file for this type
▸Applications & Permits1
▸DOB NOWHPD Certification Letter or CPC Special Permit1
08/13/2026B01090881-I1Open ↗
▸Zoning, Tax Lot & Property Records18
▸DOB NOWRestrictive Declaration/Easement 28
08/21/2026B01090881-S8Open ↗
08/21/2026B01090881-S5Open ↗
08/13/2026B01090881-S7Open ↗
Showing 3 of 8 on file for this type
▸DOB NOWRestrictive Declaration/Easement 18
08/21/2026B01090881-S8Open ↗
08/21/2026B01090881-S5Open ↗
08/13/2026B01090881-I1Open ↗
Showing 3 of 8 on file for this type
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026B01090881-I1Open ↗
▸DOB NOWZD1: DOB Zoning Diagram1
08/13/2026B01090881-I1Open ↗
▸Seals & Professional Certifications24
▸DOB NOWSpecial Inspector Seal & Signature11
08/31/2026B01090881-S8Open ↗
08/26/2026B01090881-S4Open ↗
08/26/2026B01090881-S4Open ↗
Showing 3 of 11 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature10
08/29/2026B00737641-I1Open ↗
08/21/2026B01090881-S2Open ↗
08/21/2026B01090881-S8Open ↗
Showing 3 of 10 on file for this type
▸DOB NOWProgress Inspector Seal & Signature3
08/26/2026B01090881-S4Open ↗
08/26/2026B01090881-S3Open ↗
08/26/2026B01090881-S3Open ↗
▸Trade Schedules & Equipment1
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)1
08/13/2026B01090881-I1Open ↗
▸Safety & Tenant Protection11
▸DOB NOWHPD-1: Anti-Harassment Area Checklist9
08/21/2026B01090881-S8Open ↗
08/21/2026B01090881-S5Open ↗
08/13/2026B01090881-I1Open ↗
Showing 3 of 9 on file for this type
▸DOB NOWCertificate of No Harassment1
08/13/2026B01090881-I1Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026B01090881-I1Open ↗
▸Inspections & Test Reports2
▸DOB NOWSOIL REPORT1
08/13/2026B01090881-S3Open ↗
▸DOB NOWTR4 Test Report and Plot Diagram1
08/13/2026B01090881-S3Open ↗
▸Other Documents3
▸DOB NOWSite Survey: Initial1
08/13/2026B01090881-I1Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone1
08/13/2026B01090881-I1Open ↗
▸DOB NOWProperty Ownership Certification1
08/21/2026B01090881-I1Open ↗