Preview 795,237 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 101072511

400 N MICHIGAN AVE

SELF-CERT 2019 CBRC: INTERIOR ALTERATIONS TO EXISTING 14TH FLOOR OFFICE SPACE. NO EXTERIOR WORK. CHANGE OF OCCUPANCY CLASSIFICATION FROM B TO A3. 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
2025-08-01
Issued
2025-08-14
Time to issue
13 days

Value and contractor

Declared value
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Total fee
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Contractor
NORCON, INC.

Chicago details

Review type
SELF CERT
Milestone
COMPLETE
Community area (code)
8

Data as of 2026-09-21.

Other permits issued in Chicago, August 2025