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General ConstructionNear North SidePermit issued

Multi-Unit Residential Conversion at 401 W Ontario St, Near North Side

401 W ONTARIO ST, Near North Side

Winston

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Reported project cost

$7,500,000

As declared on the permit filing.

Issued
September 16, 2026
Expires
—
License
—

What was permitted

A significant project is underway in the Near North Side neighborhood to convert an existing 4-story office building into a multi-unit residential property. This includes the addition of a partial 5th story, creating 57 new dwelling units.

This large-scale conversion project was issued on September 16, 2026, with a substantial reported cost of $7,500,000. The work is currently active and involves Blackout Electric Services Inc.

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View the official permit record

Tracking number, work description, cost and dates

Tracking number101081716
Work permit #—
Job filing number—
Work type—
StatusACTIVE
Job descriptionDDS CBC 2019 - ERECT A NEW PARTIAL 5TH FL. UPPER STORY ADDITION & RENOVATION OF THE EXISTING 4-STORY OFFICE BUILDING IN ORDER TO CONVERT IT TO MULTI-UNIT RESIDENTIAL USE. NEW OCCUPANCY TO CONTAIN 57 DWELLING UNITS. BUILDING TO BE FULLY SPRINKLERED. R-2 OCCUPANCY (NEW). TYPE-IV CONSTRUCTION. V3 COMPANIES OF IL
Floor / unit—
Estimated cost$7,500,000
ApprovedApril 3, 2026
IssuedSeptember 16, 2026
Expires—
BBL—
BIN—

Property owner

Andrew Friestedt

Related searches

renovationresidentialNear North SideChicagobuilding conversion$7,500,000