Alteration or repair at 401 W Ontario St
Chicago Department of Buildings permit 101081716, issued Sep 16, 2026 for 401 W Ontario St: alteration or repair. Dds 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
- Permit number
- 101081716
- Issued
- Type of work
- Alteration or repair
- Status
- Issued
- Reported cost
- $7,500,000
- ZIP code
- 60654 (from the permit's location)
- City's category
- Permit - renovation/alteration
- City's status
- Active
- Source
- Chicago Department of Buildings permit data (this record)
Type of work and status are our standard labels, so permits compare across cities. The city's own wording is shown above. Costs under $100 are shown as not listed, because filers often enter $0 or $1 when no cost is required.
All permits at 401 W Ontario St
Chicago Department of Buildings last updated its data Oct 1, 2026. We checked it 2026-10-01 22:25 UTC. Official data.