Permit Record

Alteration Commercial

509 West 183 Street, Manhattan, NY 10033

ClassificationBLMultifamily Alteration
Reliable valueNot in source
ContractorUnflat & Associates →
Permit record
Parties
Contractor
Unflat & Associates
Applicant
Micheal Ungflat
Owner
Yansui Realty
Architect
Not in source
Engineer
Not in source
Contractor license
0001503
Building & lot · PLUTO
Building class
C1
Zoning district
R7-2
Lot area
6,368 sq ft
Year built
1920
Units (total)
30
Units (residential)
30
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
1021550098
Climate zone (IECC)
4A
Roof area (est.)
5,436 sq ft
HVAC tonnage (est.)
36 tons
Building type
R
Building subtype
Not in source
Geocode & dates
Coordinates
40.8495, -73.9305
Geocode confidence
95%
Geocode source
Not in source
Issued
Nov 3, 2003
Applied
Nov 3, 2003
Work class
Not in source
Status
Current status
issued
Source status
ISSUED
Expired
Jul 9, 2004
Provenance
First seen by PermitCore
May 2, 2026 · 15:54 UTC
Last seen
Jul 17, 2026 · 02:25 UTC
Last changed
May 2, 2026 · 15:54 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

10 permits at this parcel (parcel 1021550098) · Jan 27, 2000 – Feb 2, 2012

  1. Feb 2, 2012legacy_jobs:1986545Alteration Residential · Issued$55,500
  2. Feb 2, 2012legacy_jobs:2062336Alteration Residential · Issued$55,500
  3. Feb 2, 20122513156MEP Plumbing · IssuedStivan Plbg & Htg INC
  4. Feb 2, 20122513160Alteration Commercial · IssuedStivan Plbg & Htg INC
  5. Nov 3, 2003291541Alteration Commercial · IssuedUnflat & Associates
  6. Nov 3, 2003This permitAlteration Commercial · IssuedUnflat & Associates
  7. Nov 3, 2003legacy_jobs:451727Alteration Commercial · Finaled
  8. Nov 3, 2003330512Alteration Commercial · IssuedUnflat & Associates
  9. Jan 27, 2000legacy_jobs:350426Alteration Commercial · Issued
  10. Jan 27, 20001283551Alteration Commercial · IssuedCastle Oil CORP

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

Other permits by Unflat & Associates

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Developer details
Permit #
291288
Canonical ID
1:291288
Source permit ID
291288
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