Permit Record

Alteration Commercial

951 N Winchester Ave, Chicago, IL

ClassificationPERMIT - RENOVATION/ALTERATIONCommercial Alteration
Reliable value$6,000
ContractorGnp Development, INC. →
Permit record
Parties
Contractor
Gnp Development, INC.
Applicant
Not in source
Owner
Indigo Development LLC .
Architect
Not in source
Engineer
Not in source
Contractor license
Not in source
Building & lot · PLUTO
Building class
Not in source
Zoning district
Not in source
Lot area
Not in source
Year built
Not in source
Units (total)
Not in source
Units (residential)
Not in source
Units (commercial)
Not in source
Floor area
Not in source
Parcel & enrichment
Parcel APN
1706422004
Climate zone (IECC)
5A
Roof area (est.)
Not derivable — no building-size signal for this permit
HVAC tonnage (est.)
Not derivable — no building-size signal for this permit
Building type
Not in source
Building subtype
Not in source
Geocode & dates
Coordinates
41.8993, -87.6758
Geocode confidence
90%
Geocode source
Not in source
Issued
Jun 29, 2017
Applied
Jun 14, 2017
Work class
Commercial
Description
Source description

ADD A GARAGE ROOF TOP DECK (3B CONSTRUCTION) TO EXISTING 3 D.U. MASONRY BUILDING (PREVIOUS PERMIT #100557031). **CERTIFIED CORRECTIONS- - SUBJECT TO FIELD INSPECTIONS & AUDIT **

Status
Current status
finaled
Source status
COMPLETE
Provenance
First seen by PermitCore
May 2, 2026 · 12:59 UTC
Last seen
May 15, 2026 · 08:43 UTC
Last changed
May 5, 2026 · 04:40 UTC

Open in Chicago 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

3 permits at this parcel (parcel 1706422004) · Oct 7, 2014 – Jun 29, 2017

  1. Jun 29, 2017This permitAlteration Commercial · Finaled$6,000Gnp Development, INC.
  2. Oct 14, 2014100561263DemolitionImpactor P And P INC
  3. Oct 7, 2014100557031New Construction Residential Mf · Finaled$486,000Gnp Development, INC.

Full permit history at this parcel · as of Jul 8, 2026.

Other permits by Gnp Development, INC.

Showing up to 12 most-recent permits by this contractor in the indexed window

No other permits by this contractor in the indexed window.
Developer details
Permit #
100623784
Canonical ID
3:100623784
Source permit ID
100623784
Browse Chicago permits in the Market Explorer →Pull this permit via /v1/permits →