Building Enlargement and Conversion at 642 Classon Avenue, Brooklyn
642 CLASSON AVENUE, BROOKLYN, 11238 · Crown Heights (North)
Estimated Project Cost
$0
General Construction
Issued
May 19, 2026
Expires
February 12, 2027
License
General Contractor
About This Project
A substantial building project is underway in Crown Heights, Brooklyn, aiming to significantly expand an existing structure. The proposal includes converting a three-story, three-dwelling unit building into a six-story, five-dwelling unit property, requiring new building code compliance.
This extensive general construction project received its permit on May 19, 2026, with a significant estimated cost of $1,635,982. L&T CONSULTANTS LLC is the general contractor managing this development.
What This Means For You
For major residential conversions in Crown Heights, expect project costs to exceed $1.6 million, as demonstrated by this large-scale enlargement.
The Business That Did This Work
L&T CONSULTANTS LLC
General Contractor · License #624349
202 FOSTER AVENUE #C
17 permits filed · 12 neighborhoods
Permit Details
| Tracking Number | 932190645 |
| Work Permit # | B01114441-I1-GC |
| Job Filing Number | — |
| Work Type | General Construction |
| Status | Permit Issued |
| Job Description | PROPOSED ALT-1 FOR ENLARGEMENT OF EXISTING 3 STORY 3 DWELLING UNITS AND CONVERT TO A 6 STORY 5 DWELLING UNITS. OBTAIN NEW C OF O. PROPOSED ALT-1 REQUIRED TO MEET NEW BUILDING REQUIREMENTS PER 28-101.4.5. |
| Floor / Unit | Cellar, Floor Number(s) 1, Floor Number(s) 2, Floor Number(s) 3, Floor Number(s) 4, Floor Number(s) 5, Floor Number(s) 6, Roof |
| Estimated Cost | $1,635,982 |
| Approved | April 21, 2025 |
| Issued | May 19, 2026 |
| Expires | February 12, 2027 |
| BBL | — |
| BIN | — |
Property Owner
COHEN GLOBAL INC
Yona Kogman
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