Permit Record

Building permit

1 Greene Avenue, Brooklyn, NY 11238

ClassificationOTMultifamily Alteration
Reliable valueNot in source
ContractorUnitech Design INC →
Permit record
Parties
Contractor
Unitech Design INC
Applicant
Chang Hahn
Owner
N/a
Architect
Not in source
Engineer
Not in source
Contractor license
0025984
Building & lot · PLUTO
Building class
S9
Zoning district
R6B
Lot area
2,150 sq ft
Year built
1920
Units (total)
5
Units (residential)
2
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3021180048
Climate zone (IECC)
4A
Roof area (est.)
974 sq ft
HVAC tonnage (est.)
7 tons
Building type
R
Building subtype
Not in source
Geocode & dates
Coordinates
40.6858, -73.9731
Geocode confidence
95%
Geocode source
Not in source
Issued
Feb 4, 2013
Applied
Feb 1, 2013
Work class
Not in source
Status
Current status
issued
Source status
ISSUED
Expired
May 17, 2013
Provenance
First seen by PermitCore
May 2, 2026 · 15:41 UTC
Last seen
Jul 17, 2026 · 17:53 UTC
Last changed
May 2, 2026 · 15:41 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

30 permits at this parcel (parcel 3021180048) · Mar 20, 2001 – May 20, 2019

  1. May 20, 20193648418MEP Plumbing · IssuedC.R.U. Mechan & Heat INC
  2. Oct 26, 2018532873Alteration Commercial · IssuedNy Firetech INC
  3. Oct 26, 2018legacy_jobs:3071619Alteration Commercial · Issued$5,000
  4. Aug 3, 2018720744168Sidewalk Shed · Issued$6,000Kaj Ny Construction INC
  5. Aug 2, 2018222535478Sidewalk Shed · Issued$6,000Kaj Ny Construction INC
  6. Jun 14, 2018945119286Construction Fence · Finaled$5,000Prime Construction New Yo
  7. May 8, 2018875967867Construction Fence · Finaled$5,000Prime Construction New Yo
  8. May 4, 2018legacy_jobs:3013817Alteration Commercial · Issued$104,600
  9. May 4, 20183562948MEP Plumbing · IssuedC.R.U. Mechan & Heat INC
  10. May 4, 20183562942Other · IssuedHongtai Construction INC
  11. May 4, 20183562947MEP Mechanical HVAC · IssuedHongtai Construction INC
  12. Apr 16, 2018224790631Sidewalk Shed · Issued$6,000Kaj Ny Construction INC
  13. Sep 28, 20163245093Other · IssuedMohammed Sanaullah
  14. Sep 28, 2016legacy_jobs:2502815Alteration Commercial · Finaled$18,483
  15. Feb 4, 2013legacy_jobs:2198893Alteration Commercial · Finaled$15,561
  16. Feb 4, 2013This permitOther · IssuedUnitech Design INC
  17. Feb 4, 20132674337Other · IssuedUnitech Design INC
  18. Feb 4, 2013legacy_jobs:2115360Alteration Commercial · Finaled$4,095
  19. Feb 4, 2013legacy_jobs:2115359Alteration Commercial · Finaled$15,561
  20. Feb 4, 2013legacy_jobs:2198894Alteration Commercial · Finaled$4,095
  21. Feb 4, 2013legacy_jobs:2198884Alteration Commercial · Finaled$15,561
  22. May 29, 20011411842Alteration Commercial · IssuedNew York Business Fire System
  23. May 29, 2001legacy_jobs:889336Alteration Commercial · Finaled$1,000
  24. May 29, 2001legacy_jobs:924140Alteration Commercial · Finaled$1,000
  25. Mar 20, 20011375382MEP Plumbing · IssuedCru Mechanical & Htg INC
  26. Mar 20, 2001legacy_jobs:920399Alteration Commercial · Finaled$49,000
  27. Mar 20, 20011375376MEP Mechanical HVAC · IssuedC & Li Construction CORP
  28. Mar 20, 20011375369Other · IssuedC & Li Construction CORP
  29. Mar 20, 2001legacy_jobs:885779Alteration Commercial · Finaled$49,000
  30. Date not in sourcelegacy_jobs:2464875Alteration Commercial · Disapproved$15,000

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

Other permits by Unitech Design INC

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Developer details
Permit #
2674341
Canonical ID
1:2674341
Source permit ID
2674341
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