Permit Record

Alteration Residential

433 9th Street, Brooklyn, NY

ClassificationAlteration
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Not in source
Owner
433 9th Street LLC
Architect
Gregory Korn
Engineer
Not in source
Contractor license
Not in source
Building & lot · PLUTO
Building class
S2
Zoning district
R6B
Lot area
1,500 sq ft
Year built
1899
Units (total)
3
Units (residential)
2
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
3010060047
Climate zone (IECC)
4A
Roof area (est.)
551 sq ft
HVAC tonnage (est.)
4 tons
Building type
R
Building subtype
1-2-3 FAMILY
Geocode & dates
Coordinates
40.6671, -73.9820
Geocode confidence
95%
Geocode source
Not in source
Issued
Oct 11, 2016
Applied
Dec 29, 2015
Work class
Residential
Description
Source description

CHANGE OF USE FROM USE GROUP 4A, AN EXISTING DOCTOR S OFFICE, TO USE GROUP 6, A HAIR SALON, IN THE BASEMENT OF THE BUILDING. THERE IS NO WORK BEING PERFORMED IN THIS APPLICATION.

Status
Current status
finaled
Source status
SIGNED OFF
Finaled
Oct 17, 2018
Provenance
First seen by PermitCore
May 6, 2026 · 18:54 UTC
Last seen
Jun 7, 2026 · 15:10 UTC
Last changed
Jun 7, 2026 · 15:10 UTC

Open in New York City source →

Data-quality checks1 of 12 flagged

1 of 12 data-quality checks flagged on this permit. Detail below.

Valuation is placeholder
valuation_usd_is_placeholder

valuation_usd matched a known placeholder (often 0 or 1) used by the source when the real valuation wasn't reported.

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
Project timeline at this parcel

11 permits at this parcel (parcel 3010060047) · through Oct 11, 2016

  1. Oct 11, 2016This permitAlteration Residential · Finaled
  2. Oct 11, 2016legacy_jobs:2611475Alteration Residential · Finaled
  3. Oct 11, 20163252527Alteration Commercial · IssuedGreg Korn Aia Architects
  4. Jan 19, 20112353114MEP Plumbing · IssuedNew York Standard Mech CO
  5. Oct 4, 20102311274Alteration Commercial · IssuedAllied Arborcraft CORP
  6. Jun 8, 2005legacy_jobs:1026328Alteration Residential · Finaled$20,000
  7. Jun 8, 2005795261MEP Plumbing · IssuedTrevi Pl
  8. Jun 8, 2005719216Alteration Commercial · IssuedTrevi Pl
  9. Jun 8, 2005794882Other · Re-issuedC & M Home Improvement
  10. Date not usable in source710367MEP Plumbing · IssuedDole Plumbing And Heating CORP.
  11. Date not usable in source331870Alteration Commercial · IssuedKing Awning And Shade Co.,inc.

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

Developer details
Permit #
legacy_jobs:2611484
Canonical ID
1:legacy_jobs:2611484
Source permit ID
legacy_jobs:2611484
Browse New York City permits in the Market Explorer →Pull this permit via /v1/permits →