Major Mechanical Systems Work at 665 New York Avenue, Brooklyn
665 NEW YORK AVENUE, Brooklyn, 11203 · Prospect Lefferts Gardens-Wingate
What was permitted
Significant mechanical work is underway at 665 New York Avenue in Brooklyn, specifically in the Prospect Lefferts Gardens-Wingate neighborhood. This project is linked to an Alternate Certificate of Occupancy, suggesting substantial building system changes.
The permit for this extensive mechanical work was issued on July 9, 2026, with a substantial estimated project cost of $2,799,604. MONADNOCK GEN'L CONT INC is the general contractor for this project.
A nearly $2.8 million mechanical systems project in Brooklyn, tied to an Alt-CO, indicates a major undertaking for property owners and provides a high-end cost reference for complex building upgrades.
What it cost
Issued
July 9, 2026
Expires
December 1, 2026
License
General Contractor
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Filed by MONADNOCK GEN'L CONT INC · 38 permits across 9 neighborhoods
View the official permit record
Tracking number, work description, cost, and dates
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View the official permit record
Tracking number, work description, cost, and dates
| Tracking Number | 466540505 |
| Work Permit # | B00683860-S3-MS |
| Job Filing Number | — |
| Work Type | Mechanical Systems |
| Status | Permit Issued |
| Job Description | Mechanical work in conjunction with Alt-CO # B00683860. |
| Floor / Unit | Floor Number(s) 001 through 001 |
| Estimated Cost | $2,799,604 |
| Approved | October 23, 2024 |
| Issued | July 9, 2026 |
| Expires | December 1, 2026 |
| BBL | — |
| BIN | — |
Property Owner
N/A
Carolee Fink