Permit Record

Alteration Residential

1506 N Karlov Ave, Chicago, IL

ClassificationPERMIT - EASY PERMIT PROCESSResidential Alteration
Reliable valueNot in source
ContractorTfwa Corporation →
Permit record
Parties
Contractor
Tfwa Corporation
Applicant
Not in source
Owner
Alberto Cordaro
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
1603208010
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
41.9083, -87.7291
Geocode confidence
90%
Geocode source
Not in source
Issued
Oct 1, 2019
Applied
Oct 1, 2019
Work class
Residential
Description
Source description

REVISION TO PERMIT NO. 100733114 TO CHANGE VENT CONTRACTOR TO HIRE MY WORKER

Provenance
First seen by PermitCore
May 2, 2026 · 13:05 UTC
Last seen
May 15, 2026 · 08:46 UTC
Last changed
May 5, 2026 · 04:40 UTC

Open in Chicago 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

4 permits at this parcel (parcel 1603208010) · Dec 15, 2017 – Oct 1, 2019

  1. Oct 1, 2019This permitAlteration ResidentialTfwa Corporation
  2. Nov 5, 2018100791734Alteration ResidentialTfwa Corporation
  3. Jun 1, 2018100764011Alteration Commercial · Finaled$16,000Recendiz Welding INC
  4. Dec 15, 2017100733114Alteration Residential · Finaled$20,000Portillo General Welding INC

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

Other permits by Tfwa Corporation

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Developer details
Permit #
100843763
Canonical ID
3:100843763
Source permit ID
100843763
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