Permit Record

Mechanical Systems

93 MONROE STREET, Brooklyn, NY 11216

ClassificationMechanical SystemsMultifamily Alteration
Reliable value$51,000
ContractorPROTON CCM LLC →
Permit record
Parties
Contractor
PROTON CCM LLC
Applicant
HONGZHI LIU
Owner
MNB Developers
Architect
Not in source
Engineer
Not in source
Contractor license
624015
Building & lot · PLUTO
Building class
C0
Zoning district
R6B
Lot area
1,500
Year built
1920
Units (total)
3
Floor area
Not in source
Parcel & enrichment
Parcel APN
3019860043
Climate zone (IECC)
4A
Roof area (est.)
425 sq ft
HVAC tonnage (est.)
3 tons
Building type
R
Geocode & dates
Coordinates
40.6849, -73.9552
Geocode confidence
95%
Geocode source
Not in source
Issued
2026-06-24
Applied
Not in source
Work class
Not in source
Description
Source description

EXISTING 2 FAMILY HOUSE WITH MECHANICAL WORK AT CELLAR,BASEMENT,1ST AND 3RD FLOOR.JOB FILED TO RELATED TO ALT 2 APPLICATION #B01374099-i1.NO CHANGE IN USE,MEANS OF EGRESS OR OCCUPANCY IN THIS APPLICATION.

Status
Current status
issued
Source status
Permit Issued
Expired
2027-04-25
Provenance
First seen by PermitCore
Jun 26, 2026 · 12:03 UTC
Last seen
Jun 28, 2026 · 11:30 UTC
Last changed
Jun 26, 2026 · 12:03 UTC

Open in New York City source →

Data-quality checks0 of 12 flagged

0 of 12 data-quality rules flagged anything on this permit.

Checks not flagged

  • Geocode out of bounds
  • Geocode is sentinel
  • Issued date in the future
  • Issued date parse bug
  • Issued date is placeholder
  • Commercial units is placeholder
  • Residential units out of bounds
  • Residential units is placeholder
  • Total units out of bounds
  • Total units is placeholder
  • Valuation out of bounds
  • Valuation is placeholder
Project timeline at this parcel

6 permits at this parcel (parcel 3019860043) · 2025-11-19 – 2026-06-24

  1. 2026-06-24This permitMEP Mechanical HVAC · Issued$51,000PROTON CCM LLC
  2. 2026-03-27656552778Alteration Commercial · Issued$88,725PROTON CCM LLC
  3. 2026-03-26217270064MEP Plumbing · Issued$36,000TRI CITY MECHANICAL GROUP
  4. 2025-12-04326176096MEP Plumbing · Issued$29,692W.R. PLBG AND HTG CORP
  5. 2025-11-19332881629MEP Mechanical HVAC · Issued$160,467BUILDWISE CONSTRUCTION GR
  6. 2025-11-19332881629Alteration Commercial · Issued$160,467BUILDWISE CONSTRUCTION GR

Full permit history at this parcel · as of 2026-06-28.

Other permits by PROTON CCM LLC

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Developer details
display_permit_id
964743847|Mechanical Systems
canonical_uid
1:964743847|Mechanical Systems
source_permit_id
964743847|Mechanical Systems
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