Preview 887,040 permits — every permit Chicago, Austin and Seattle issued in the last ten years. The full load is in progress, so this is how far it has got. Sourced from city open-data portals. Data as of 2026-09-21.

Chicago · permit 100977709

401 N MICHIGAN AVE

SELFCERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 3RD AND 4TH FLOOR OFFICE SPACE. STRUCTURAL PEER REVIEW INCLUDED FOR NEW INTERCONNECTING STAIR. NO CHANGE TO EXISTING USE. (OCCUPANCY B / CONSTRUCTION TYPE 1A)

Permit

Permit type
PERMIT - RENOVATION/ALTERATION
Class
Unknown
Trade
Electrical
Nature of work
Alteration
Status
COMPLETE

Location

City
Chicago
State
IL

Dates

Applied
2022-08-26
Issued
2022-08-26
Time to issue
same day

Chicago details

Review type
SELF CERT
Milestone
CERTIFICATE OF OCCUPANCY ISSUED
Community area (code)
8

Data as of 2026-09-20.

Other permits issued in Chicago, August 2022