Permit Record

Alteration Residential

401 N Aberdeen St, Chicago, IL

ClassificationAlteration
Reliable valueNot in source
ContractorForma Construction LLC →
Permit record
Parties
Contractor
Forma Construction LLC
Applicant
Not in source
Owner
Aberdeen Investors, 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
1708256013
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
41.8890, -87.6544
Geocode confidence
90%
Geocode source
Not in source
Issued
Sep 11, 2025
Applied
Aug 26, 2025
Work class
Residential
Description
Source description

SELF-CERT 2019 CBRC: REVISION TO EXISTING PERMIT #101049206 TO CORRECT BUILDING OCCUPANCY TO R-2 IN CODE MATRIX OF AN INTERIOR REMODELING OF 4 EXISTING RESIDENTIAL UNITS ON THE 2ND & 3RD FLOOR OF EXISTING 4 STORY 6 D.U./OFFICE BUILDING AS PER PLAN (OCCUPANCY GROUP R-2, TYPE IV CONSTRUCTION).

Status
Current status
finaled
Source status
COMPLETE
Provenance
First seen by PermitCore
May 2, 2026 · 13:11 UTC
Last seen
Jun 24, 2026 · 20:16 UTC
Last changed
Jun 24, 2026 · 20:16 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 1708256013) · Nov 10, 2009 – Sep 11, 2025

  1. Sep 11, 2025This permitAlteration Residential · FinaledForma Construction LLC
  2. Jan 15, 2025101064264MEP Mechanical HVACParkway Elevators, INC.
  3. Jul 10, 2024101049206Alteration Residential · Finaled$200,000Forma Construction LLC
  4. Nov 10, 2009100289117Alteration Commercial · Finaled$15,000Chicago Specialty Gardens, INC

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

Other permits by Forma Construction LLC

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Developer details
Permit #
101073494
Canonical ID
3:101073494
Source permit ID
101073494
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