Alteration Commercial
3027 West 21st Street, Brooklyn, NY
ClassificationA3Multifamily Alteration
Reliable valueNot in source
ContractorNot in source
Permit record
Parties
- Contractor
- Not in source
- Applicant
- Not in source
- Owner
- Istar INC
- Architect
- Jennifer Cheuk
- Engineer
- Not in source
- Contractor license
- Not in source
Building & lot · PLUTO
- Building class
- D1
- Zoning district
- R7D
- Lot area
- 21,339 sq ft
- Year built
- 2025
- Units (total)
- 23
- Units (residential)
- Not in source
- Units (commercial)
- Not in source
- Floor area
- Not in source
Parcel & enrichment
- Parcel APN
- 3070720004
- Climate zone (IECC)
- 4A
- Roof area (est.)
- 21,205 sq ft
- HVAC tonnage (est.)
- 314 tons
- Building type
- R
- Building subtype
- OTHERS
Geocode & dates
- Coordinates
- 40.5739, -73.9875
- Geocode confidence
- 95%
- Geocode source
- Not in source
- Issued
- Jun 24, 2024
- Applied
- Dec 12, 2022
- Work class
- Not in source
Description
Source description
BUILDER'S PAVEMENT PLAN FILED (169'-4 3/8")IN CONJUNCTION WITH NB APPLICATION B08015349-I1.
Status
- Current status
- issued
- Source status
- PERMIT ISSUED - ENTIRE JOB/WORK
Provenance
- First seen by PermitCore
- May 6, 2026 · 18:58 UTC
- Last seen
- Jun 10, 2026 · 18:25 UTC
- Last changed
- Jun 10, 2026 · 18:25 UTC
Data-quality checks1 of 12 flagged
1 of 12 data-quality checks flagged on this permit. Detail below.
- Valuation is placeholder
valuation_usd_is_placeholdervaluation_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
- Jun 24, 2024This permitAlteration Commercial · Issued
- Oct 27, 20213878044Construction Equipment · IssuedWest 20th Construction Ll
- Nov 17, 20203806871Construction Equipment · IssuedWest 20th Construction Ll
- Nov 13, 20193708138Construction Equipment · IssuedSurf Avenue Construction
- Dec 10, 20182827848Construction Equipment · IssuedSurf Avenue Construction
- Dec 15, 20173492936Construction Equipment · IssuedSurf Avenue Construction
- Jan 9, 2017legacy_jobs:2787752Alteration Commercial · Issued
- Jan 9, 20173297955Construction Equipment · IssuedSurf Avenue Construction
Full permit history at this parcel · as of Jul 19, 2026.
Developer details
- Permit #
- legacy_jobs:3375800
- Canonical ID
- 1:legacy_jobs:3375800
- Source permit ID
- legacy_jobs:3375800