Permit Record

MEP Mechanical HVAC

493 Prospect Place, Brooklyn, NY 11238

ClassificationMHMultifamily Alteration
Reliable valueNot in source
ContractorKtc Design Group INC →
Permit record
Parties
Contractor
Ktc Design Group INC
Applicant
Kam Di Cheung
Owner
Extreme Homes Group
Architect
Not in source
Engineer
Not in source
Contractor license
0617053
Building & lot · PLUTO
Building class
C1
Zoning district
R6A
Lot area
3,000 sq ft
Year built
1910
Units (total)
8
Units (residential)
8
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3011550058
Climate zone (IECC)
4A
Roof area (est.)
1,988 sq ft
HVAC tonnage (est.)
13.5 tons
Building type
R
Building subtype
Not in source
Geocode & dates
Coordinates
40.6759, -73.9604
Geocode confidence
95%
Geocode source
Not in source
Issued
Jul 21, 2017
Applied
Jul 21, 2017
Work class
Residential
Status
Current status
issued
Source status
ISSUED
Expired
Feb 25, 2018
Provenance
First seen by PermitCore
May 2, 2026 · 16:21 UTC
Last seen
Jul 17, 2026 · 02:30 UTC
Last changed
May 2, 2026 · 16:21 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

9 permits at this parcel (parcel 3011550058) · Sep 3, 2014 – Jul 21, 2017

  1. Jul 21, 2017This permitMEP Mechanical HVAC · IssuedKtc Design Group INC
  2. Sep 23, 2016legacy_jobs:2617331Alteration Residential · Finaled$112,200
  3. Sep 23, 20163242666MEP Mechanical HVAC · IssuedNyc Rigger Construction
  4. Feb 8, 20163112530MEP Plumbing · IssuedKishan Plbg & Heating INC
  5. Feb 8, 20163112523Alteration Commercial · IssuedKishan Plbg & Heating INC
  6. Jul 21, 20153007529Other · IssuedGlobal Group Industries C
  7. Sep 3, 2014legacy_jobs:2393831Alteration Residential · Finaled$469,800
  8. Sep 3, 2014legacy_jobs:2393822Alteration Residential · Finaled$469,800
  9. Sep 3, 20143007530Other · IssuedGlobal Group Industries C

Full permit history at this parcel · as of Jul 9, 2026.

Other permits by Ktc Design Group INC

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Developer details
Permit #
3409407
Canonical ID
1:3409407
Source permit ID
3409407
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