| Owner | Filings | Most Recent |
|---|---|---|
| 520 Union Ave | 1 | 03/22/2026 |
| Date | Price | Unit | Seller → Buyer | $/sf |
|---|---|---|---|---|
| 09/09/2022 | $3.0M | — | — → — | $1,249/sf building |
| Firm | Filings | Most Recent |
|---|---|---|
| Basic Groups | 9 | 08/27/2026 |
| Madriaga Engineering | 4 | 03/06/2026 |
| Representative | Filings | Most Recent |
|---|---|---|
| LDC Consultants | 4 | 03/21/2026 |
| Basic Groups | 14 | 03/21/2026 |
| Firm | Trade | Roles | Most Recent |
|---|---|---|---|
| NYC Best Remodeling | General Contractor | 6 | 07/08/2026 |
| K&S Home Deco | General Contractor | 2 | 04/09/2026 |
| AMC Plumbing, Heating & CLNG | Plumbing | 2 | 07/08/2026 |
| Mattern E | Electrical | 1 | 03/21/2026 |
| Falco Electrical Services | Electrical | 1 | 03/22/2026 |
| NYC Best Remodeling | Scaffold | 1 | 07/08/2026 |
| XH&RC Plumbing and Heating | Plumbing | 1 | 07/08/2026 |
| Agency | License # | Filings | Most Recent |
|---|---|---|---|
| Andrew Goodrich, P.E., PL | 965 | 8 | 08/27/2026 |
| J&R Design and Inspection | 6637 | 2 | 03/06/2026 |
| Source | Work Type | Status | Applicant | Issued |
|---|---|---|---|---|
| DOB NOW | General Construction | Permit Issued | NYC Best Remodeling | 04/21/2026 |
| DOB NOW | General Construction | Signed-off | K&S Home Deco | 04/02/2026 |
| DOB NOW | Plumbing | Signed-off | XH&RC Plumbing and Heating | 04/04/2025 |
| DOB NOW | General Construction | Signed-off | K&S Home Deco | 03/31/2025 |
| DOB NOW | Mechanical Systems | Signed-off | NYC Best Remodeling | 04/15/2024 |
| DOB NOW | General Construction | Permit Issued | NYC Best Remodeling | 02/22/2024 |
| DOB NOW | Plumbing | Signed-off | AMC Plumbing, Heating & CLNG | 12/06/2023 |
| DOB NOW | Construction Fence | Signed-off | NYC Best Remodeling | 12/05/2023 |
| DOB NOW | Plumbing | Signed-off | AMC Plumbing, Heating & CLNG | 11/08/2023 |
| DOB NOW | General Construction | Permit Issued | NYC Best Remodeling | 09/25/2023 |
| BIS | OT | ISSUED | Avs Construction Services | 04/08/2014 |
| Filed | Status | Contractor | Scope | Make / Model / Capacity |
|---|---|---|---|---|
| 08/27/2026 | Permit Issued | NYC Best Remodeling | Air Conditioning Systems, Ventilation Systems |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 08/27/2026 | Signed-off | AMC Plumbing, Heating & CLNG | Gas, Water/Sanitary |
| Filed | Status | Contractor | Scope |
|---|---|---|---|
| 02/28/2024 | Complete | Falco Electrical Services | General Wiring |
| 01/31/2024 | Complete | Falco Electrical Services | 1 meters, 4 new_meters |
| Date | Type | Result | Report |
|---|---|---|---|
| 03/12/2026 | Certified Water and Sanitary-WS-Fixtures-Finish | Certified | View ↗ |
| 05/19/2025 | Certified Water and Sanitary-WS-Sanitary Piping-Roughing | Certified | View ↗ |
| 10/29/2024 | Pass-Final CND-Occupancy Inspection | Pass | View ↗ |
| 06/28/2024 | Certified Remove/Cap - work done in accordance with code | Certified | View ↗ |
| 06/28/2024 | Certified Water and Sanitary-WS-Fixtures-Finish | Certified | View ↗ |
| 06/17/2024 | Pass-Final CND-Occupancy Inspection | Pass | View ↗ |
| 06/05/2024 | Fail-Final CND-Occupancy Inspection | Fail | View ↗ |
| 01/10/2024 | Certified Water and Sanitary-WS-Sanitary Piping-Roughing | Certified | View ↗ |
| 01/10/2024 | Certified Water and Sanitary-WS-Sanitary Piping-Underground | Certified | View ↗ |
| 12/08/2023 | Fail-Final PL - Up to 3 Requested Floors | Fail | View ↗ |
| Date | Requirement | Inspector | Role |
|---|---|---|---|
| 08/04/2026 | Concrete - Cast-In-Place | ANDREW GOODRICH | special |
| 08/04/2026 | Interior lighting power | ANDREW GOODRICH | energy_progress |
| 08/04/2026 | Air barrier - visual inspection | ANDREW GOODRICH | energy_progress |
| 08/04/2026 | Insulation placement and R values | ANDREW GOODRICH | energy_progress |
| 08/04/2026 | Lighting controls | ANDREW GOODRICH | energy_progress |
| 08/04/2026 | Fenestration areas | ANDREW GOODRICH | energy_progress |
| 08/04/2026 | Fenestration and door U-factor and product ratings | ANDREW GOODRICH | energy_progress |
| 08/04/2026 | Protection of exposed foundation insulation | ANDREW GOODRICH | energy_progress |
| 08/04/2026 | Fire-Resistance Rated Construction | ANDREW GOODRICH | progress |
| 08/04/2026 | Energy Code Compliance Inspections | ANDREW GOODRICH | progress |
| 08/04/2026 | Tenant Protection Plan Compliance | — | special |
| 08/04/2026 | Fire-Resistant Penetrations and Joints | ANDREW GOODRICH | special |
| 04/30/2026 | Insulation placement and R values | ANDREW GOODRICH | energy_progress |
| 04/30/2026 | Fire-Resistance Rated Construction | ANDREW GOODRICH | progress |
| 04/30/2026 | Energy Code Compliance Inspections | ANDREW GOODRICH | progress |
| 04/30/2026 | Tenant Protection Plan Compliance | — | special |
| 04/30/2026 | Fire-Resistant Penetrations and Joints | ANDREW GOODRICH | special |
| 04/30/2026 | Concrete - Cast-In-Place | ANDREW GOODRICH | special |
| 04/30/2026 | Fenestration areas | ANDREW GOODRICH | energy_progress |
| 04/30/2026 | Interior lighting power | ANDREW GOODRICH | energy_progress |
| 04/30/2026 | Air barrier - visual inspection | ANDREW GOODRICH | energy_progress |
| 04/30/2026 | Protection of exposed foundation insulation | ANDREW GOODRICH | energy_progress |
| 04/30/2026 | Lighting controls | ANDREW GOODRICH | energy_progress |
| 04/30/2026 | Fenestration and door U-factor and product ratings | ANDREW GOODRICH | energy_progress |
| 03/05/2026 | Interior lighting power | Robert Truskosky | energy_progress |