Mechanical SystemsBrooklynPermit Issued

Mechanical Systems Upgrade at 139 Skillman Avenue, Brooklyn

139 SKILLMAN AVENUE, BROOKLYN, 11211 · East Williamsburg

Estimated Project Cost

$0

Mechanical Systems

Issued

May 26, 2026

Expires

August 8, 2026

License

General Contractor

About This Project

Residents in East Williamsburg, Brooklyn, might notice mechanical system upgrades at 139 Skillman Avenue, specifically the replacement of an existing split AC system. This project focuses on improving climate control within the building.

The permit for this work was issued on May 26, 2026, with an estimated project cost of $100,005. CATALYST DEVELOPMENT GROU is the general contractor, and the project involves no changes to the building's use, occupancy, or egress.

What This Means For You

An AC system replacement at 139 Skillman Avenue in Brooklyn was permitted with an estimated cost of $100,005, offering insight into the expense of upgrading building climate control systems.

The Business That Did This Work

CATALYST DEVELOPMENT GROU

General Contractor · License #608149

309 W 55TH STREET SUITE 3A

1 permits filed · 1 neighborhood

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Permit Details

Tracking Number998929918
Work Permit #B01397210-I1-MS
Job Filing Number
Work TypeMechanical Systems
StatusPermit Issued
Job DescriptionReplace existing split AC system with new indoor units and remote condensers. No change in use, egress or occupancy.
Floor / UnitPenthouse 10 through 10, Roof
Estimated Cost$100,005
ApprovedMay 22, 2026
IssuedMay 26, 2026
ExpiresAugust 8, 2026
BBL
BIN

Property Owner

Not Applicable

139 Skillman Board

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mechanical systemsAC replacementEast WilliamsburgBrooklynHVACbuilding upgrade$100,005 project cost

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