Permit Record

MEP Mechanical HVAC

4504 S Knox Ave, Chicago, IL

ClassificationHVAC / Mechanical
Reliable valueNot in source
ContractorA & C Heating & Cooling
Permit record
Parties
Contractor
A & C Heating & Cooling
Applicant
Not in source
Owner
Jose Torres
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
1903310030
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
41.8111, -87.7397
Geocode confidence
90%
Geocode source
Not in source
Issued
Aug 24, 2016
Applied
Aug 24, 2016
Work class
Not in source
Description
Source description

REPLACE (1) FURNACE IN SFR.

Provenance
First seen by PermitCore
May 2, 2026 · 13:00 UTC
Last seen
May 15, 2026 · 08:44 UTC
Last changed
May 12, 2026 · 00:30 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

2 permits at this parcel (parcel 1903310030) · Aug 24, 2016 – Aug 24, 2016

  1. Aug 24, 2016This permitMEP Mechanical HVACA & C Heating & Cooling
  2. Aug 24, 2016100666312MEP Plumbing$24,750In & Exterior Tech INC.

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

Other permits by A & C Heating & Cooling

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Developer details
Permit #
100666333
Canonical ID
3:100666333
Source permit ID
100666333
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