Preview 316,582 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 2026-09-20.

Chicago · permit 100757956

535 N MICHIGAN AVE

REPLACE EXISTING DUAL TEMP RETURN LOOP PIPING IN THE 33RD FLOOR ATTIC SPACE WITH NEW SCHEDULE 40 BLACK PIPE. NEW PIPING TO BE OF SAME SIZE AND LOCATION OF OLD PIPE.

Permit

Permit type
PERMIT - EASY PERMIT PROCESS
Class
Unknown
Trade
Mechanical
Nature of work
Other

Location

City
Chicago
State
IL

Dates

Applied
2018-04-20
Issued
2018-04-20
Time to issue
same day

Chicago details

Review type
EASY PERMIT
Community area (code)
8

Data as of 2026-09-20.

Other permits issued in Chicago, April 2018