What was permitted
For those in the Carroll Gardens-Cobble Hill-Gowanus-Red Hook area, a significant building conversion is underway at 550 Union Street. This project involves transforming a 2-story commercial building into an 8-unit residential property with an added cellar and stories.
The permit for this large-scale general construction project was issued on August 28, 2026, with a substantial estimated project cost of $3,340,000. DYNATEC DEVELOPEMENT INC is the general contractor responsible for this conversion.
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View the official permit record
Tracking number, work description, cost and dates
View the official permit record
Tracking number, work description, cost and dates
| Tracking number | 197657778 |
|---|---|
| Work permit # | B01257108-I1-GC |
| Job filing number | — |
| Work type | General Construction |
| Status | Permit Issued |
| Job description | Alteration CO application as-of-right conversion of existing 2 story commercial building into a residential R-2 building with horizontal & vertical enlargement for 8 D.U.'s, 5 stories & Cellar. New egress stairs & building to be fully sprinklered. |
| Floor / unit | Cellar, Cellar, Cellar, Cellar, Floor Number(s) 1, Floor Number(s) 1, Floor Number(s) 1, Floor Number(s) 1, Floor Number(s) 1, Floor Number(s) 2, Floor Number(s) 2, Floor Number(s) 3, Floor Number(s) |
| Estimated cost | $3,340,000 |
| Approved | July 7, 2026 |
| Issued | August 28, 2026 |
| Expires | August 28, 2027 |
| BBL | — |
| BIN | — |
Property owner
Union Street Property Owner
Tomer Yogev
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