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 101081096

646 N MICHIGAN AVE

SELF-CERT 2019 CBRC: STRUCTURAL PEER REVIEW INCLUDED. ALTERATION TO EXISTING 5TH FLOOR OCCUPIABLE ROOF GUARDRAIL. SCOPE TO INCLUDE REMOVAL OF EXISTING GUARDRAIL TO INSTALL NEW GUARDRAIL /WINDSCREEN SYSTEM. NO CHANGE OF OCCUPANCY. 1A CONSTRUCTION, B-BUSINESS.

Permit

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

Location

City
Chicago
State
IL

Dates

Applied
2026-04-03
Issued
2026-05-18
Time to issue
45 days

Chicago details

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

Data as of 2026-09-21.

Other permits issued in Chicago, May 2026