Permit Record

Alteration Residential

411 W Ontario St, Chicago, IL

ClassificationPERMIT - RENOVATION/ALTERATIONResidential Alteration
Reliable value$8,000
ContractorRatia Construction LLC →
Permit record
Parties
Contractor
Ratia Construction LLC
Applicant
Not in source
Owner
Jeffrey Ream
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
1709128017
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
41.8930, -87.6391
Geocode confidence
90%
Geocode source
Not in source
Issued
Aug 4, 2018
Applied
Aug 4, 2018
Work class
Residential
Description
Source description

REMOVE EXISTING SPIRAL STAIRS AND REPLACE WITH NEW STAIRS AT EXISTING DWELLING UNIT#721 AT EXISTING CONDOMINIUM IN A MULTI-UNIT RESIDENTIAL BUILDING. NO CHANGE IN USE OR OCCUPANCY CLASS

Status
Current status
finaled
Source status
COMPLETE
Provenance
First seen by PermitCore
May 2, 2026 · 13:03 UTC
Last seen
May 15, 2026 · 08:45 UTC
Last changed
May 12, 2026 · 00:31 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

14 permits at this parcel (parcel 1709128017) · Aug 4, 2008 – Jul 31, 2025

  1. Jul 31, 2025B200436173MEP Electrical · Issued$11,890
  2. Jul 24, 2023101024389Addition Residential$106,950Total Masonry, LLC
  3. Jul 30, 2020100882735Alteration Residential$450,000Total Masonry, LLC
  4. Jul 29, 2020100884546MEP Mechanical HVAC$1,200Dme Access LLC EVC046
  5. Jul 29, 2020100884548MEP Mechanical HVAC$33,715Dme Access LLC EVC046
  6. Oct 31, 2018100780711Alteration Commercial · Finaled$15,000Chicago Maintenance & Remodeling Incorporated
  7. Aug 4, 2018This permitAlteration Residential · Finaled$8,000Ratia Construction LLC
  8. May 2, 2018100759908MEP Mechanical HVAC$228,074Suburban Elev./dba Schindler
  9. Nov 29, 2017100737613MEP Mechanical HVAC$45,000Otis Elevator - Chicago
  10. Nov 18, 2016100672547Alteration Residential · Finaled$25,000Stonebridge Development Group
  11. Dec 12, 2012100470312Roofing$26,000Sheridan Construction And Consulting, LLC.
  12. Dec 11, 2012100448607Alteration Commercial · Finaled$20,000H & A Construction, INC.
  13. Dec 2, 2008100269262MEP Electrical$3,500Absolute Construction Incorporated
  14. Aug 4, 2008100250898Alteration Residential$28,400

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

Other permits by Ratia Construction LLC

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Developer details
Permit #
100770600
Canonical ID
3:100770600
Source permit ID
100770600
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