| Owner | Filings | Most Recent |
|---|---|---|
| 450 Union | 27 | 03/21/2026 |
| 2201 Union | 7 | 03/22/2026 |
| Date | Price | Unit | Seller → Buyer | $/sf |
|---|---|---|---|---|
| 09/14/2022 | $40.6M | — | 450 UNION LLC → 2201 UNION LLC | — not available |
| 09/09/2014 | $12.3M | — | — → — | — not available |
| Firm | Filings | Most Recent |
|---|---|---|
| Black Sheep Engineering Group | 10 | 04/30/2026 |
| Magnusson Architecture and Planning | 2 | 04/21/2026 |
| Potential Engineering | 1 | 08/05/2025 |
| Tohfaz Uddin PE | 1 | 01/08/2025 |
| Sandeep Gunnala Engineering | 1 | 11/19/2024 |
| Langan Engineering | 3 | 09/26/2024 |
| Mueser Rutledge Consulting Engineering | 3 | 08/08/2024 |
| Derive Engineers | 4 | 07/25/2024 |
| Thornton Tomasetti | 3 | 06/30/2023 |
| Yaker Engineering | 1 | 03/22/2023 |
| ADG Architecture and Design | 1 | 04/02/2019 |
| Representative | Filings | Most Recent |
|---|---|---|
| William Vitacco Associates | 11 | 03/21/2026 |
| DVA Advisors | 3 | 03/21/2026 |
| Rigid Structural Design | 2 | 03/21/2026 |
| Project Factory NYC | 1 | 03/21/2026 |
| Next Step Building Solutions | 2 | 03/21/2026 |
| Sandeep Gunnala Engineering | 2 | 03/21/2026 |
| Firm | Trade | Roles | Most Recent |
|---|---|---|---|
| KSK Construction Group | General Contractor | 17 | 08/18/2026 |
| Precision Hoist & Scaffo* | Scaffold | 14 | 10/02/2026 |
| Best Mechanical Services | Plumbing | 12 | 07/08/2026 |
| New Leaf Development | General Contractor | 3 | 03/21/2026 |
| Candid Connection | Scaffold | 3 | 03/21/2026 |
| Parksite Construction | General Contractor | 3 | 03/21/2026 |
| Rightway Plumbing and Heating | Fire Protection | 2 | 07/08/2026 |
| SKF Electrical | Electrical | 2 | 03/22/2026 |
| SKF Electrical | Electrical | 1 | 03/21/2026 |
| KSK Construction Group | Scaffold | 1 | 04/09/2026 |
| Citi-Wide Electric | Electrical | 1 | 03/21/2026 |
| Accurate Electrical | Electrical | 1 | 03/21/2026 |
| Jam Electrical | Electrical | 1 | 03/21/2026 |
| Agency | License # | Filings | Most Recent |
|---|---|---|---|
| Domani Inspection Service | 843 | 8 | 04/21/2026 |
| Professional Solutions GR | 1756 | 1 | 08/05/2025 |
| Mueser Rutledge Consulting | 977 | 4 | 08/08/2024 |
| Big Apple Group NY A Rma | 9168 | 1 | 06/30/2023 |
| Source | Work Type | Status | Applicant | Issued |
|---|---|---|---|---|
| DOB NOW | Sidewalk Shed | Permit Issued | Precision Hoist & Scaffo* | 10/01/2026 |
| DOB NOW | Construction Fence | Permit Issued | Precision Hoist & Scaffo* | 09/08/2026 |
| DOB NOW | Protection and Mechanical Methods | Permit Issued | Precision Hoist & Scaffo* | 08/28/2026 |
| DOB NOW | Structural | Permit Issued | KSK Construction Group | 08/17/2026 |
| DOB NOW | Mechanical Systems | Permit Issued | KSK Construction Group | 08/11/2026 |
| DOB NOW | Earth Work | Permit Issued | KSK Construction Group | 08/10/2026 |
| DOB NOW | General Construction | Permit Issued | KSK Construction Group | 08/07/2026 |
| DOB NOW | Sidewalk Shed | Permit Issued | Precision Hoist & Scaffo* | 07/08/2026 |
| DOB NOW | Sidewalk Shed | Permit Issued | Precision Hoist & Scaffo* | 03/30/2026 |
| DOB NOW | Sprinklers | Permit Issued | Rightway Plumbing and Heating | 03/24/2026 |
| DOB NOW | Mechanical Systems | Permit Issued | KSK Construction Group | 03/23/2026 |
| DOB NOW | Earth Work | Permit Issued | KSK Construction Group | 02/20/2026 |
| DOB NOW | Plumbing | Permit Issued | Best Mechanical Services | 02/18/2026 |
| DOB NOW | Standpipe | Permit Issued | Best Mechanical Services | 02/17/2026 |
| DOB NOW | Protection and Mechanical Methods | Permit Issued | Precision Hoist & Scaffo* | 12/23/2025 |
| DOB NOW | Standpipe | Permit Issued | Best Mechanical Services | 12/16/2025 |
| DOB NOW | Supported Scaffold | Permit Issued | Precision Hoist & Scaffo* | 11/26/2025 |
| DOB NOW | Earth Work | Signed-off | KSK Construction Group | 10/06/2025 |
| DOB NOW | Structural | Permit Issued | KSK Construction Group | 10/06/2025 |
| DOB NOW | Support of Excavation | Signed-off | Parksite Construction | 09/18/2025 |
| DOB NOW | Construction Fence | Permit Issued | Precision Hoist & Scaffo* | 09/11/2025 |
| DOB NOW | Protection and Mechanical Methods | Permit Issued | Precision Hoist & Scaffo* | 09/04/2025 |
| DOB NOW | General Construction | Permit Issued | KSK Construction Group | 08/19/2025 |
| DOB NOW | Sidewalk Shed | Permit Issued | Precision Hoist & Scaffo* | 07/14/2025 |
| DOB NOW | Plumbing | Permit Issued | Best Mechanical Services | 05/01/2025 |
| DOB NOW | Sprinklers | Permit Issued | Rightway Plumbing and Heating | 03/12/2025 |
| DOB NOW | Standpipe | Permit Issued | Best Mechanical Services | 02/28/2025 |
| DOB NOW | Plumbing | Permit Issued | Best Mechanical Services | 02/27/2025 |
| DOB NOW | Structural | Permit Issued | KSK Construction Group | 01/15/2025 |
| DOB NOW | Protection and Mechanical Methods | Permit Issued | Precision Hoist & Scaffo* | 01/08/2025 |
| DOB NOW | Construction Fence | Permit Issued | KSK Construction Group | 01/06/2025 |
| DOB NOW | Mechanical Systems | Permit Issued | KSK Construction Group | 01/02/2025 |
| DOB NOW | Support of Excavation | Signed-off | KSK Construction Group | 12/22/2024 |
| DOB NOW | Foundation | Signed-off | KSK Construction Group | 12/11/2024 |
| DOB NOW | Supported Scaffold | Permit Issued | Precision Hoist & Scaffo* | 12/06/2024 |
| DOB NOW | Standpipe | Permit Issued | Best Mechanical Services | 11/12/2024 |
| DOB NOW | Construction Fence | Permit Issued | Candid Connection | 03/23/2023 |
| DOB NOW | Foundation | Signed-off | New Leaf Development | 04/04/2022 |
| BIS | — | ISSUED | Candid Connection | 04/12/2023 |
| BIS | EQ | ISSUED | Candid Connection | 04/12/2023 |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 04/21/2026 | Permit Issued | Rightway Plumbing and Heating | Sprinkler System |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 04/21/2026 | Permit Issued | Best Mechanical Services | Storm, Water/Sanitary |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 12/19/2025 | Permit Issued | SKF Electrical | — |
| 12/11/2025 | Permit Issued | Jam Electrical | — |
| 05/28/2025 | Permit Issued | SKF Electrical | General Wiring |
| 12/02/2024 | Permit Issued | SKF Electrical | 1 meters, 1 new_meters |
| 11/27/2024 | Permit Issued | Nash Electric Services | — |
| 11/26/2024 | Permit Issued | Nash Electric Services | — |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 04/21/2026 | Permit Issued | KSK Construction Group | Concrete, Masonry |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 04/30/2026 | Permit Issued | Precision Hoist & Scaffo* | Scaffold |
| 02/13/2026 | Permit Issued | Precision Hoist & Scaffo* | Sidewalk Shed |
| 11/19/2024 | — | — | Fence |
| 03/22/2023 | Permit Issued | KSK Construction Group | Fence |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 04/21/2026 | Permit Issued | KSK Construction Group | Earthwork |
| Date | Type | Result | Report |
|---|---|---|---|
| 03/24/2026 | Certified Storm Drainage-ST-Piping-Underground | Certified | View ↗ |
| 03/24/2026 | Certified Water and Sanitary-WS-Sanitary Piping-Underground | Certified | View ↗ |
| 02/11/2026 | Certified Storm Drainage-ST-Piping-Roughing | Certified | View ↗ |
| 02/11/2026 | Certified Water and Sanitary-WS-Sanitary Piping-Roughing | Certified | View ↗ |
| 11/20/2025 | Certified StandPipe - SD - Hydrostatic 63/09 Test (100 Foot Increments) | Certified | View ↗ |
| 10/22/2025 | Certified StandPipe - SD - Hydrostatic 63/09 Test (Initial 75 Feet) | Certified | View ↗ |
| 07/25/2025 | Certified Water and Sanitary-WS-Sanitary Piping-Underground | Certified | View ↗ |
| 07/18/2025 | Certified Storm Drainage-ST-Piping-Underground | Certified | View ↗ |
| Date | Requirement | Inspector | Role |
|---|---|---|---|
| 06/29/2026 | Insulation placement and R values | JOHN MCMONAGLE | energy_progress |
| 06/29/2026 | Air barrier continuity plan testing | JOHN MCMONAGLE | energy_progress |
| 06/29/2026 | Energy Code Compliance Inspections | JOHN MCMONAGLE | progress |
| 06/29/2026 | Fenestration and door U-factor and product ratings | JOHN MCMONAGLE | energy_progress |
| 06/29/2026 | Lowest Floor Elevation | JOHN MCMONAGLE | progress |
| 06/29/2026 | Fire-Resistance Rated Construction | JOHN MCMONAGLE | progress |
| 06/29/2026 | Protection of exposed foundation insulation | JOHN MCMONAGLE | energy_progress |
| 06/29/2026 | Fenestration air leakage | JOHN MCMONAGLE | energy_progress |
| 06/29/2026 | Air barrier - visual inspection | JOHN MCMONAGLE | energy_progress |
| 06/29/2026 | Wall Panels, Curtain Walls, and Veneers | JOHN MCMONAGLE | special |
| 06/29/2026 | Flood Zone Compliance (attach FEMA elevation/dry floodproofing certificate where applicable) | JOHN MCMONAGLE | special |
| 06/29/2026 | Sprayed fire-resistant materials | JOHN MCMONAGLE | special |
| 06/29/2026 | Fire-Resistant Penetrations and Joints | JOHN MCMONAGLE | special |
| 06/29/2026 | Vestibules | JOHN MCMONAGLE | energy_progress |
| 06/29/2026 | Fenestration areas | JOHN MCMONAGLE | energy_progress |
| 07/29/2025 | Structural Stability – Alterations of existing buildings | SAMER ABOU-GHAIDA | special |
| 07/29/2025 | Excavations - Sheeting, Shoring, and Bracing | SAMER ABOU-GHAIDA | special |
| 09/17/2024 | Energy Code Compliance Inspections | JOHN MCMONAGLE | progress |
| 08/20/2024 | Subsurface Conditions – Fill Placement & In-Place Density | Jan Cermak | special |
| 08/20/2024 | Subsurface Investigations (Borings/Test Pits) | Jan Cermak | special |
| 08/20/2024 | Excavations - Sheeting, Shoring, and Bracing | Jan Cermak | special |
| 08/02/2024 | Metering | JOHN MCMONAGLE | energy_progress |
| 08/02/2024 | Electrical motors and elevators | JOHN MCMONAGLE | energy_progress |
| 06/18/2024 | Seismic Isolation Systems | JOHN MCMONAGLE | special |
| 06/18/2024 | Fire-Resistant Penetrations and Joints | JOHN MCMONAGLE | special |