NYC Permit AlertsBy BuildPermitGuide

Neighborhoods › Flatbush

439 East 21 Street, Brooklyn: 4 building jobs on file

Building Identification Number 3118859 · Flatbush. Newest first.

Mechanical/plumbing work: Sprinkler filed in conjunction to b01418328-i1., est. $20K
Objections · filed Sep 24, 2026 · est. $20,000
Mechanical/plumbing work: Mechanical filed in conjunction to b01418328-i1., est. $15K
Objections · filed Sep 23, 2026 · est. $15,000
Mechanical/plumbing work: Plumbing filed in conjunction to b01418328-i1., est. $50K
Objections · filed Sep 23, 2026 · est. $50,000
Interior renovation: Alt 1 filed for interior renovation to convert existing…, est. $150K
Approved · filed Jun 22, 2026 · est. $150,000

Watch this building

A watch on this address catches every job filed in the building, whatever the distance.