| Owner | Filings | Most Recent |
|---|---|---|
| Shorenstein Realty Services East | 204 | 03/21/2026 |
| 850 Third Avenue Owner | 108 | 07/08/2026 |
| Waterman Properties | 44 | 10/21/2026 |
| Equity Office Property | 25 | 03/21/2026 |
| 1301 Property Owners | 24 | 03/21/2026 |
| The Chetrit Group | 23 | 07/08/2026 |
| Premisys Real Estate Services | 11 | 03/21/2026 |
| ZML-850 3rd Ave Ltd Partnership | 9 | 03/21/2026 |
| NY-Midtown Properties | 7 | 03/21/2026 |
| Murray Hill Properties | 2 | 03/21/2026 |
| Fire Department | 2 | 03/21/2026 |
| Eop 850 TH | 2 | 03/21/2026 |
| Eop 850 3rd Avenue | 2 | 03/21/2026 |
| ZML 850 3 Avenue | 2 | 03/21/2026 |
| Citibank | 2 | 03/21/2026 |
| Fire Department of the City of New York | 1 | 03/21/2026 |
| Date | Price | Unit | Seller → Buyer | $/sf |
|---|---|---|---|---|
| 01/08/2019 | $422.0M | — | 850 THIRD AVENUE HOLDING LLC → 850 Third Avenue Owner | $734/sf building |
| 03/30/2016 | $463.0M | — | — → — | $806/sf building |
| Firm | Filings | Most Recent |
|---|---|---|
| Anz Consulting Engineering | 3 | 10/20/2026 |
| Alnour Consulting | 1 | 10/16/2026 |
| Wid Chapman Architects | 1 | 10/12/2026 |
| KN3 Engineering | 2 | 09/17/2026 |
| Alsieux Architecture | 2 | 07/30/2026 |
| Severud Associates Consulting Engineering | 3 | 04/14/2026 |
| Cosentini Associates | 6 | 03/27/2026 |
| Mdeas Architects | 4 | 03/27/2026 |
| HC Pec | 3 | 03/06/2026 |
| Moed de Armas & Shannon | 2 | 08/22/2025 |
| Jack Green Associates | 7 | 11/19/2024 |
| Shaaban Engineering | 2 | 07/21/2022 |
| John F. Giuseffi, Architect | 1 | 08/23/2021 |
| Jack Stone Engineers | 1 | 08/23/2021 |
| Associates | 2 | 10/29/2019 |
| Representative | Filings | Most Recent |
|---|---|---|
| Codegreen | 7 | 03/21/2026 |
| William Vitacco Associates | 11 | 03/21/2026 |
| Kazam Consultants | 4 | 03/21/2026 |
| Dynamic Building Consultants | 4 | 03/21/2026 |
| Firm | Trade | Roles | Most Recent |
|---|---|---|---|
| Turner Construction Company | General Contractor | 11 | 07/10/2026 |
| John Gallin & Son | General Contractor | 6 | 03/21/2026 |
| National Maintenance | Sign hanger | 4 | 07/08/2026 |
| PJP Installers | Scaffold | 4 | 07/29/2026 |
| W.J. Regan & Company | General Contractor | 3 | 03/21/2026 |
| Vip Fire Sprinkler | Fire Protection | 2 | 07/08/2026 |
| Donato Plumbing | Plumbing | 2 | 07/08/2026 |
| Walsh Electrical Contracting | Electrical | 1 | 03/21/2026 |
| Thompson Electrical Main Service | Electrical | 1 | 03/21/2026 |
| Classic Consulting Group | Scaffold | 1 | 07/08/2026 |
| The Franklin Co. Cont | Electrical | 1 | 03/21/2026 |
| Up Town Electric | Electrical | 1 | 03/21/2026 |
| Brandl Electric | Electrical | 1 | 03/22/2026 |
| KG Sprinkler | Fire Protection | 1 | 07/08/2026 |
| Par Plumbing Co | Plumbing | 1 | 07/08/2026 |
| Standard Fire Protection | Fire Protection | 1 | 07/08/2026 |
| Par Plumbing Co., Inc.o | Fire Protection | 1 | 03/21/2026 |
| Agency | License # | Filings | Most Recent |
|---|---|---|---|
| Anz Consulting Engineering | 3946 | 1 | 10/14/2026 |
| Codegreen | 510 | 16 | 10/14/2026 |
| Mohammad Ahead - Professi | 9286 | 2 | 09/17/2026 |
| Jack Green Associates | 422 | 6 | 11/19/2024 |
| MEP Inspections | 1102 | 1 | 08/23/2021 |
| Metrospec Sia | 6420 | 1 | 10/29/2019 |
| Source | Work Type | Status | Applicant | Issued |
|---|---|---|---|---|
| DOB NOW | Suspended Scaffold | Permit Issued | Skytrac Access Group | 09/24/2026 |
| DOB NOW | Sidewalk Shed | Permit Issued | PJP Installers | 07/28/2026 |
| DOB NOW | General Construction | Permit Issued | Turner Construction Company | 07/08/2026 |
| DOB NOW | Structural | Permit Issued | Turner Construction Company | 06/11/2026 |
| DOB NOW | Structural | Permit Issued | Turner Construction Company | 06/05/2026 |
| DOB NOW | Structural | Permit Issued | Turner Construction Company | 06/04/2026 |
| DOB NOW | Mechanical Systems | Permit Issued | Turner Construction Company | 06/02/2026 |
| DOB NOW | Sprinklers | Permit Issued | KG Sprinkler | 06/02/2026 |
| DOB NOW | Sidewalk Shed | Permit Issued | Spring Scaffolding | 05/28/2026 |
| DOB NOW | Suspended Scaffold | Permit Issued | Classic Consulting Group | 05/18/2026 |
| DOB NOW | General Construction | Permit Issued | Turner Construction Company | 05/13/2026 |
| DOB NOW | Plumbing | Permit Issued | Donato Plumbing | 04/29/2026 |
| DOB NOW | Plumbing | Permit Issued | Donato Plumbing | 04/29/2026 |
| DOB NOW | General Construction | Permit Issued | Turner Construction Company | 04/21/2026 |
| DOB NOW | General Construction | Permit Issued | Turner Construction Company | 04/21/2026 |
| DOB NOW | Mechanical Systems | Permit Issued | Turner Construction Company | 04/21/2026 |
| DOB NOW | General Construction | Permit Issued | Turner Construction Company | 03/23/2026 |
| DOB NOW | Suspended Scaffold | Permit Issued | Kay Waterproofing | 03/18/2026 |
| DOB NOW | Construction Fence | Permit Issued | PJP Installers | 03/09/2026 |
| DOB NOW | Protection and Mechanical Methods | Permit Issued | PJP Installers | 03/09/2026 |
| DOB NOW | Sidewalk Shed | Permit Issued | PJP Installers | 03/06/2026 |
| DOB NOW | General Construction | Permit Issued | Turner Construction Company | 08/27/2025 |
| DOB NOW | General Construction | Signed-off | W.J. Regan & Company | 01/06/2025 |
| DOB NOW | Sprinklers | Signed-off | Standard Fire Supp | 11/25/2024 |
| DOB NOW | Sign | Signed-off | National Maintenance | 02/12/2024 |
| DOB NOW | Sign | Signed-off | National Maintenance | 02/12/2024 |
| DOB NOW | Sign | Signed-off | National Maintenance | 07/21/2022 |
| DOB NOW | Sign | Signed-off | National Maintenance | 07/21/2022 |
| DOB NOW | Mechanical Systems | Permit Issued | John Gallin Son | 08/24/2021 |
| DOB NOW | General Construction | Permit Issued | John Gallin Son | 08/24/2021 |
| DOB NOW | Mechanical Systems | Signed-off | John Gallin Son | 01/27/2021 |
| DOB NOW | Plumbing | Signed-off | Par Plumbing Co | 11/07/2019 |
| DOB NOW | Sprinklers | Permit Issued | Vip Fire Sprinkler | 10/17/2019 |
| DOB NOW | Sprinklers | Permit Issued | Vip Fire Sprinkler | 08/08/2019 |
| BIS | SP | ISSUED | Rael Automatic Sprinkler Co | 03/12/2020 |
| BIS | OT | ISSUED | R.W. Dake & Co | 09/11/2019 |
| BIS | OT | ISSUED | R.W. Dake & Co | 08/30/2019 |
| BIS | PL | ISSUED | Lab Plumbing & Heating Co | 04/04/2019 |
| BIS | OT | ISSUED | John Gallin & Son | 03/25/2019 |
| BIS | OT | ISSUED | John Gallin & Son | 03/25/2019 |
| Filed | Status | Contractor | Scope | Make / Model / Capacity |
|---|---|---|---|---|
| 10/20/2026 | — | — | Cooling Towers, Heating and Air Conditioning Systems | |
| 04/14/2026 | Permit Issued | Turner Construction Company | Air Conditioning Systems, Ventilation Systems | Cooling United Cool Air TBD 60 tons ×32 Climatemaster CLIMATE MASTER SB168 56,000 CFM · Wshp ×2 Climacool CLIMA COOL UWCS30AFS 125 tons · Chiller ×1 Ventilation N/A na 1 CFM ×1 |
| 04/06/2026 | Permit Issued | Turner Construction Company | Ventilation Systems | Ventilation __Junk__ na 1 BTU ×1 |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 10/20/2026 | — | — | — |
| 04/14/2026 | — | — | 183 heads |
| 04/06/2026 | Permit Issued | KG Sprinkler | 80 heads |
| 11/19/2024 | Signed-off | Standard Fire Protection | — |
| 05/29/2020 | — | — | 957 heads |
| 01/15/2020 | — | — | 22 heads |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 10/20/2026 | — | — | Gas, Water/Sanitary |
| 04/14/2026 | Permit Issued | Donato Plumbing | Water/Sanitary |
| 04/06/2026 | Permit Issued | Donato Plumbing | Water/Sanitary |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 03/25/2026 | Permit Issued | Allran Electric of NY | General Wiring |
| 03/02/2026 | Permit Issued | Ecny Electrical Contractors | — |
| 02/27/2026 | Permit Issued | Top Shelf Electric | — |
| 11/12/2024 | Complete | Nead Electric | 10 meters, 1 new_meters |
| 07/18/2023 | Permit Issued | AE Electric | General Wiring |
| 09/26/2022 | Permit Issued | National Maintenance | — |
| 09/26/2022 | Permit Issued | National Maintenance | — |
| 11/04/2019 | Complete | Corp Electrical Technologies | — |
| 03/25/2019 | Complete | NJS Electrical Services | General Wiring |
| 08/30/2018 | Complete | Brandl Electric | General Wiring |
| 05/07/2018 | Complete | Unity Electric Co | — |
| 04/17/2018 | Complete | Approved Electric Cont'g | General Wiring |
| 04/11/2018 | Complete | Approved Electric Cont'g | General Wiring |
| 02/14/2018 | Complete | Campbell & Dawes Ltd Electric | General Wiring |
| 01/23/2018 | Complete | Bigman Brothers | — |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 10/20/2026 | — | — | Steel |
| 04/14/2026 | Permit Issued | Turner Construction Company | Steel, Concrete |
| 04/14/2026 | Permit Issued | Turner Construction Company | Steel, Concrete |
| 04/06/2026 | Permit Issued | Turner Construction Company | Steel |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 03/06/2026 | Permit Issued | PJP Installers | Fence |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 09/17/2026 | Permit Issued | Skytrac Access Group | Suspended Scaffold (SC) |
| 09/14/2026 | — | — | Suspended Scaffold (SC) |
| 07/30/2026 | Permit Issued | Classic Consulting Group | Suspended Scaffold (SC) |
| 03/17/2026 | Permit Issued | Kay Waterproofing | — |
| Date | Requirement | Inspector | Role |
|---|---|---|---|
| 10/13/2026 | Structural Steel - Details | — | special |
| 10/13/2026 | Structural Steel - High Strength Bolting | — | special |
| 10/13/2026 | Fire-Resistant Penetrations and Joints | ALBERT ZIRINO | special |
| 10/13/2026 | Fire-Resistant Penetrations and Joints | James Sullivan Jr | special |
| 10/13/2026 | Post-installed Anchors | James Sullivan Jr | special |
| 10/13/2026 | Post-installed Anchors | — | special |
| 10/13/2026 | Shutoff dampers | James Sullivan Jr | energy_progress |
| 10/13/2026 | HVAC-R and service water heating equipment | James Sullivan Jr | energy_progress |
| 10/13/2026 | HVAC-R and service water heating system controls | James Sullivan Jr | energy_progress |
| 10/13/2026 | HVAC-R and service water piping design and insulation | James Sullivan Jr | energy_progress |
| 10/13/2026 | Duct leakage testing, insulation and design | James Sullivan Jr | energy_progress |
| 10/13/2026 | Structural Stability – Alterations of existing buildings | — | special |
| 10/13/2026 | Structural Steel - Welding | — | special |
| 10/12/2026 | Post-installed Anchors | James Sullivan Jr | special |
| 10/06/2026 | Mastic and Intumescent Fire-resistant Coatings | James Sullivan Jr | special |
| 09/17/2026 | Alternative Materials - OTCR Buildings Bulletin Number | MOHAMMAD AHEAD | special |
| 09/17/2026 | Post-installed Anchors | MOHAMMAD AHEAD | special |
| 09/09/2026 | Post-installed Anchors | MOHAMMAD AHEAD | special |
| 09/09/2026 | Alternative Materials - OTCR Buildings Bulletin Number | MOHAMMAD AHEAD | special |
| 08/11/2026 | Final | — | progress |
| 08/11/2026 | Final | — | progress |
| 08/11/2026 | Mechanical Systems | — | special |
| 08/11/2026 | Sprinkler Systems | James Sullivan Jr | special |
| 07/31/2026 | Final | — | progress |
| 07/31/2026 | Energy Code Compliance Inspections | James Sullivan Jr | progress |
| Tenant | Space | Floors | Renovation projects |
|---|---|---|---|
| Artemis | Restaurant / Food Service | Cellar, Floor 1 | Project M01439491 |
| HPS Investment Partners | Office | Floors 2–21 | Project M01246049 Project M01225239 Project M01141357 |
| Hall Capital Partners | Office | Floor 20 | Project M00574736 Project M00574753 |
| Discovery Frette | Office | Floors 2, 6–8, 10, 11 | Project M00332174 Project M00332179 Project M00332182 |
| Touch Tunes | Office | Floor 15 | Project M00243636 Project M00243640 |