| Owner | Filings | Most Recent |
|---|---|---|
| MNK ENTERPRISES | 11 | 07/08/2026 |
| IADN | 9 | 07/08/2026 |
| OWNER OF 645 MADISON STRE | 4 | 03/22/2026 |
| TO THE OWNER OF | 2 | 03/22/2026 |
| AMERISTAR CONSTRUCTION LL | 1 | 03/22/2026 |
| INFINITY PROPERTIES | 7 | 03/21/2026 |
| Date | Price | Unit | Seller → Buyer | $/sf |
|---|---|---|---|---|
| 08/12/2019 | $2.8M | — | Private party → 647 MADISON LLC | — not available |
| Firm | Filings | Most Recent |
|---|---|---|
| ENTHINK ENGINEERS LLC | 4 | 06/12/2021 |
| ARC ARCHITECTURE + DESIGN STUDIO | 1 | 11/05/2020 |
| Representative | Filings | Most Recent |
|---|---|---|
| Mdl consulting services | 1 | 03/21/2026 |
| Firm | Trade | Roles | Most Recent |
|---|---|---|---|
| AMERISTAR CONSTRUCTION LL | General Contractor | 7 | 07/08/2026 |
| MNK ENTERPRISES LLC | General Contractor | 2 | 07/08/2026 |
| RICHARD NEU | Electrical | 1 | 03/21/2026 |
| SAT CONSTRUCTION SERVICES | General Contractor | 1 | 04/09/2026 |
| Source | Work Type | Status | Applicant | Issued |
|---|---|---|---|---|
| DOB NOW | Construction Fence | Permit Issued | SAT CONSTRUCTION SERVICES | 02/27/2025 |
| DOB NOW | Supported Scaffold | Signed-off | MNK ENTERPRISES LLC | 06/07/2021 |
| DOB NOW | Sidewalk Shed | Signed-off | MNK ENTERPRISES LLC | 05/26/2021 |
| DOB NOW | Construction Fence | Permit Issued | AMERISTAR CONSTRUCTION LL | 04/23/2021 |
| DOB NOW | Construction Fence | Permit Issued | AMERISTAR CONSTRUCTION LL | 03/25/2021 |
| DOB NOW | Construction Fence | Permit Issued | AMERISTAR CONSTRUCTION LL | 11/13/2020 |
| BIS | — | ISSUED | AMERISTAR CONSTRUCTION LL | 04/22/2021 |
| BIS | — | ISSUED | AMERISTAR CONSTRUCTION LL | 04/22/2021 |
| BIS | — | ISSUED | AMERISTAR CONSTRUCTION LL | 03/25/2021 |
| BIS | — | ISSUED | AMERISTAR CONSTRUCTION LL | 03/25/2021 |
| BIS | — | ISSUED | AMERISTAR CONSTRUCTION LL | 11/30/2020 |
| BIS | — | ISSUED | AMERISTAR CONSTRUCTION LL | 11/19/2020 |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 05/21/2021 | Complete | RICHARD NEU | — |