Permit Record

Residential

409 Cornelia St, Brooklyn, NY 11237

ClassificationOT
Reliable valueNot in source
ContractorKtc Design Group INC →
Permit record
Parties
Contractor
Ktc Design Group INC
Applicant
Kam Di Cheung
Owner
Na
Architect
Not in source
Engineer
Not in source
Contractor license
0617053
Building & lot · PLUTO
Building class
B1
Zoning district
R6
Lot area
2,000 sq ft
Year built
1901
Units (total)
2
Units (residential)
2
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3033790070
Climate zone (IECC)
4A
Roof area (est.)
1,500 sq ft
HVAC tonnage (est.)
5 tons
Building type
R
Building subtype
Not in source
Geocode & dates
Coordinates
40.6975, -73.9084
Geocode confidence
95%
Geocode source
Not in source
Issued
May 15, 2017
Applied
May 15, 2017
Work class
Residential
Status
Current status
issued
Source status
ISSUED
Expired
Feb 25, 2018
Provenance
First seen by PermitCore
May 2, 2026 · 16:19 UTC
Last seen
Jul 17, 2026 · 02:30 UTC
Last changed
May 2, 2026 · 16:19 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

4 permits at this parcel (parcel 3033790070) · Dec 8, 2016 – May 15, 2017

  1. May 15, 2017This permitOther · IssuedKtc Design Group INC
  2. Dec 8, 20163283863Other · IssuedNyc Rigger Construction
  3. Dec 8, 20163283851MEP Plumbing · IssuedCase Plumbing LLC
  4. Dec 8, 2016legacy_jobs:2775411Alteration Residential · Finaled$7,400

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 #
3369354
Canonical ID
1:3369354
Source permit ID
3369354
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