In the 30 days ending October 6, 2026, the Loop issued 167 building permits worth $233.4M, up from 215 permits worth $43.2M in the prior 30 days (August 10 to September 8). One data center conversion explains most of that, but the rest of the Loop is busier than it looks: BizPulse data shows $82.3M in permits once that single project is removed.
Key stats — 30 days ending October 6, 2026:
- 167 Loop permits worth $233.4M, versus 215 worth $43.2M in the prior 30 days
- $44.9M in office interior alterations at 225 W Randolph St (floors 10 through 16), issued October 6
- 33 Loop renovation permits worth $73.6M outside the 400 S La Salle St data center, versus 48 worth $35.3M the prior 30 days
- 34 new business licenses issued in the Loop, 7 of them at addresses where a prior business had closed
Where Is the Biggest Office Construction Happening in Chicago Right Now?
The Loop. Two permits of $10M or more account for $196.0M of the neighborhood's total: the $151.1M data center conversion at 400 S La Salle St (issued September 16) and a $44.9M buildout for Golub Capital's floors at 225 W Randolph St (issued October 6). The city's next-busiest area by value, Near North Side, logged $58.5M across 232 permits in the same window.
The second tier is where sellers get volume. According to BizPulse's permit tracking, 10 Loop renovation permits topped $1M in the 30 days ending October 6, 2026, including $8.0M at 222 W Adams St (26th and 27th floors), $3.5M at 1 E Wacker Dr (floors 32, 34 and 35), and $1.7M at 141 W Jackson Blvd (22nd floor). Of the 33 non-data-center renovation permits, 22 describe office space work.
So what: Office fit-outs mean furniture, cabling, security access, and after-construction cleaning. Those buyers sit inside a handful of towers, so one introduction to a property manager can reach several tenants.
Which Loop Addresses Have Both a New License and a Fresh Permit?
BizPulse's license database reveals 25 Loop addresses with a permit issued since September 9 and a license issued since July 9, 2026. That overlap is the strongest buying signal we track: the operator is legal and building out at the same time.
Separately, 7 of the Loop's 34 new licenses in the 30 days ending October 6 landed at addresses where a prior business had closed. Those are re-tenanted spaces, which usually need signage, POS setup, and a deep clean before opening.
So what: If you sell to offices, start with the towers named above. If you sell to storefronts, work the 7 re-tenanted addresses on BizPulse's new businesses feed before a competitor does.
How to Work the Loop List
Pull the permit addresses on the construction hot blocks map, then cross-check them in BizPulse search. For the data center story behind the headline number, see our September renovation permit analysis. Earlier Loop office work is covered in Loop office permits in June 2026.
Permit records come from the City of Chicago Data Portal, matched by BizPulse to license records.
Bottom line: Strip out one data center and the Loop still posted $82.3M in permits in the 30 days ending October 6, 2026, nearly double the prior 30 days; office-services vendors should call now.