Chicago · building permits · 2021-W12
New HVAC permits in Chicago — week of March 22, 2021
Every matching building permit the City of Chicago issued from 2021-03-22 to 2021-03-28, read from the City’s own dataset ydr8-5enu and re-read daily. Filter: Any permit whose work description mentions HVAC, a furnace, or air conditioning.
The City’s data portal did not answer.
This page reads dataset ydr8-5enu live, and the last read failed (City data portal answered 500, attempted 2026-09-12). We show nothing rather than a stale or invented table. The page retries within the hour, or you can query the City’s dataset directly.
[MISS]read ydr8-5enu · HVAC permits · week 2021-W12
→ failed (City data portal answered 500) · attempted 2026-09-12
retry ▸ automatic, within the hour
Permit Signal
This page is one trade, one week, published for anyone. Subscribers get their trade’s permits the morning each one becomes public — connected, with the contractor attached.