Permit · M01374440-S1NYC DOB NOWHVAC

400 East 84 Street

Manhattan · NY · 10028

What is permit #M01374440-S1 at 400 East 84 Street, Manhattan, NY?

400 East 84 Street in Manhattan, NY has a hvac permit (#M01374440-S1) filed Friday, May 15, 2026 by Keystone Builders Group*, valued at $70,000. Status: issued.

Issued

Friday, May 15, 2026

Filed value

$70,000

Contractor

Keystone Builders Group*

County

New York County

Status

issued

§Scope

Work description.

Mechanical work for the renovation to existing units 28a, 29a, 30a, 35a, 36a, 40a, 40b as per plans filed herewith. no change to use, egress, or occupancy.

§Details on file

What the city recorded.

Neighborhood

Upper East Side-Yorkville

Work type

Mechanical Systems

Filing reason

Initial Permit

§Where

Plotted on the map.

§Behind the paywall

Owner contacts & project team.

§Same address

Other permits at this property.

10 other permits at 400 East 84 Street. Electrical, plumbing and HVAC on one property often share a GC, so follow the paper trail.

Full permit history at this address →

#M01092673-S7HVACMay 21, 2026· Keystone Builders Group*· $150,000
#M01375703-S1HVACMay 14, 2026· Keystone Builders Group*· $10,000
#M01375688-S2PlumbingMay 13, 2026· Demar Mechanical Inc· $40,000
#M01374440-S2PlumbingMay 13, 2026· Demar Mechanical Inc· $70,000

§More like this

More hvac permits in Manhattan.

№ 001

Manhattan, NYPro

Manhattan · NYHVACM01355353-S2

Installation of air conditioning system, condensate pump, condenser water pumps, terminal boxes, air outlets and related ductwork/piping as per plans filed herewith. No change in u…

OwnerTwRZhNs SmCjPrBContractorJt Magen & Company Inc

$2,000,0002dMAY 28

№ 002