Permit Record

Alteration Residential

668 Williams Ave, Brooklyn, NY

ClassificationA3Residential Alteration
Reliable value$20,000
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Not in source
Owner
N/a
Architect
Not in source
Engineer
Jack Appelbaum
Contractor license
Not in source
Building & lot · PLUTO
Building class
A5
Zoning district
R6
Lot area
1,801 sq ft
Year built
2002
Units (total)
1
Units (residential)
1
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3038670146
Climate zone (IECC)
4A
Roof area (est.)
669 sq ft
HVAC tonnage (est.)
2 tons
Building type
R
Building subtype
1-2-3 FAMILY
Geocode & dates
Coordinates
40.6593, -73.8965
Geocode confidence
95%
Geocode source
Not in source
Issued
Aug 9, 2012
Applied
May 9, 2012
Work class
Residential
Description
Source description

PROPOSED REAR EXTENSION

Status
Current status
issued
Source status
PERMIT ISSUED - ENTIRE JOB/WORK
Provenance
First seen by PermitCore
May 6, 2026 · 18:51 UTC
Last seen
Jun 7, 2026 · 14:55 UTC
Last changed
Jun 7, 2026 · 14:55 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

6 permits at this parcel (parcel 3038670146) · Apr 29, 2005 – Aug 9, 2012

  1. Aug 9, 2012This permitAlteration Residential · Issued$20,000
  2. Aug 9, 20122600820Other · IssuedHenry Builders INC
  3. Aug 9, 20122416436Other · IssuedHenry Builders INC
  4. Sep 30, 2005legacy_jobs:1019585Alteration Residential · Issued$6,000
  5. Sep 30, 20051832730MEP Plumbing · IssuedPaul Commodore & Sons Ltd
  6. Apr 29, 20051815633Other · IssuedHenry Builders INC

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

Developer details
Permit #
legacy_jobs:2099509
Canonical ID
1:legacy_jobs:2099509
Source permit ID
legacy_jobs:2099509
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