Permit Record

Alteration Residential

317A 21 Street, Brooklyn, NY

ClassificationA1Residential Alteration
Reliable value$35,000
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Not in source
Owner
Park Slope 317A 21st Street, LLC
Architect
Herbert Ruderman
Engineer
Not in source
Contractor license
Not in source
Building & lot · PLUTO
Building class
A9
Zoning district
R6B
Lot area
1,611 sq ft
Year built
1905
Units (total)
1
Units (residential)
3
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3008920072
Climate zone (IECC)
4A
Roof area (est.)
736 sq ft
HVAC tonnage (est.)
2.5 tons
Building type
R
Building subtype
1-2-3 FAMILY
Geocode & dates
Coordinates
40.6596, -73.9906
Geocode confidence
95%
Geocode source
Not in source
Issued
Jan 25, 2002
Applied
Nov 7, 2001
Work class
Residential
Description
Source description

FILING TO OBTAIN CERTIFICATE OF OCCUPANCY FOR THREE (3) FAMILY RESIDENCE

Status
Current status
finaled
Source status
SIGNED OFF
Finaled
Feb 19, 2003
Provenance
First seen by PermitCore
May 6, 2026 · 19:02 UTC
Last seen
Jun 10, 2026 · 18:55 UTC
Last changed
Jun 10, 2026 · 18:55 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 3008920072) · Nov 7, 2001 – Jan 25, 2002

  1. Jan 25, 2002This permitAlteration Residential · Finaled$35,000
  2. Jan 25, 2002legacy_jobs:933202Alteration Residential · Finaled$35,000
  3. Jan 25, 200284594Alteration Commercial · IssuedA&w Systems, INC.
  4. Dec 12, 20011500310MEP Plumbing · IssuedMarwood Plbg CORP
  5. Dec 12, 20011177335MEP Plumbing · IssuedMarwood Plbg CORP
  6. Nov 7, 20011485370Alteration Commercial · IssuedA&w Systems, INC.

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

Developer details
Permit #
legacy_jobs:933211
Canonical ID
1:legacy_jobs:933211
Source permit ID
legacy_jobs:933211
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