Permit Record

Alteration Residential

4415 S Knox Ave, Chicago, IL

ClassificationPERMIT - RENOVATION/ALTERATIONResidential Alteration
Reliable value$28,000
ContractorHernandez Electric →
Permit record
Parties
Contractor
Hernandez Electric
Applicant
Not in source
Owner
Brenda Martinez
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
1903307017
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
41.8127, -87.7395
Geocode confidence
90%
Geocode source
Not in source
Issued
Mar 8, 2018
Applied
Mar 8, 2018
Work class
Residential
Description
Source description

REMOVE SECOND STORY ADDITION DONE CONTRARY TO APPROVED PERMIT NO. 100510215; ERECT NEW 22.5' WIDE X 7.75' DEEP WOOD FRAME DORMER ADDITION TO AN EXISTING ONE STORY, IV-A CONSTRUCTION TYPE, SINGLE FAMILY RESIDENCE AS PER PLANS.

Status
Current status
finaled
Source status
COMPLETE
Provenance
First seen by PermitCore
May 2, 2026 · 13:01 UTC
Last seen
May 15, 2026 · 08:44 UTC
Last changed
May 12, 2026 · 00:30 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

2 permits at this parcel (parcel 1903307017) · Jun 5, 2014 – Mar 8, 2018

  1. Mar 8, 2018This permitAlteration Residential · Finaled$28,000Hernandez Electric
  2. Jun 5, 2014100510215Alteration Commercial · Finaled$15,000Project Solutions Group, LLC.

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

Other permits by Hernandez Electric

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 #
100697079
Canonical ID
3:100697079
Source permit ID
100697079
Browse Chicago permits in the Market Explorer →Pull this permit via /v1/permits →