Permit Record

Residential

447 Washington Ave, Brooklyn, NY 11238

ClassificationOT
Reliable valueNot in source
ContractorTandem Construction →
Permit record
Parties
Contractor
Tandem Construction
Applicant
Hilton Dawson
Owner
447 Washington
Architect
Not in source
Engineer
Not in source
Contractor license
0014503
Building & lot · PLUTO
Building class
A4
Zoning district
R6B
Lot area
1,880 sq ft
Year built
1922
Units (total)
1
Units (residential)
1
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3019630009
Climate zone (IECC)
4A
Roof area (est.)
1,008 sq ft
HVAC tonnage (est.)
3.5 tons
Building type
R
Building subtype
Not in source
Geocode & dates
Coordinates
40.6852, -73.9652
Geocode confidence
95%
Geocode source
Not in source
Issued
Nov 5, 2009
Applied
Nov 5, 2009
Work class
Residential
Status
Current status
issued
Source status
ISSUED
Expired
Oct 24, 2010
Provenance
First seen by PermitCore
May 2, 2026 · 15:15 UTC
Last seen
Jul 17, 2026 · 17:34 UTC
Last changed
May 2, 2026 · 15:15 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

8 permits at this parcel (parcel 3019630009) · Apr 10, 2009 – Nov 5, 2009

  1. Nov 5, 2009This permitOther · IssuedTandem Construction
  2. Nov 5, 20092181161Other · IssuedTandem Construction
  3. Apr 10, 20091374650Other · IssuedTandem Construction
  4. Apr 10, 20091374585Other · IssuedTandem Construction
  5. Date not in sourcelegacy_jobs:1685596Alteration Residential · Issued$5,000
  6. Date not in sourcelegacy_jobs:1685546Alteration Residential · Issued$150,000
  7. Date not in sourcelegacy_jobs:1624979Alteration Residential · Issued$150,000
  8. Date not in sourcelegacy_jobs:1685537Alteration Residential · Issued$150,000

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

Other permits by Tandem Construction

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Developer details
Permit #
2181157
Canonical ID
1:2181157
Source permit ID
2181157
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