Chicago · building permits · month 2021-10
How many excavation permits did Chicago issue in October 2021?
Every matching building permit the City issued from 2021-10-01 to 2021-10-31, counted in the City’s own dataset ydr8-5enu and re-read daily. Filter: Any permit whose work description mentions excavation, caissons, or shoring. 245 in the year to 2026-07-01 — a thin trade, so quiet weeks are common.
The City’s data portal did not answer.
This page counts dataset ydr8-5enu live, and the last read failed (City data portal answered 503, attempted 2026-08-17). We show nothing rather than a stale or invented total. The page retries within the hour, or you can query the City’s dataset directly.
[MISS]read ydr8-5enu · excavation permits · month 2021-10
→ failed (City data portal answered 503) · attempted 2026-08-17
retry ▸ automatic, within the hour
October 2021 · week by week
Each week below holds every matching permit for its seven days, not just the largest. ISO weeks, so the first and last may reach a few days outside October 2021.
October 2021 · other trades
Permit Signal
A month is the scoreboard. Subscribers get their trade’s permits the morning each one becomes public — connected, with the contractor attached.