Look up or export every active Ohio OCILB licence — electrical, HVAC, plumbing, hydronics and refrigeration contractors — with company, address, phone and expiry. Filter by trade, county, city, ZIP or name.
First release. Filter-only statewide export of the Ohio Construction Industry Licensing Board
(OCILB) roster: electrical, HVAC, hydronics, plumbing and refrigeration contractor licences
(training agencies on request). Three requests per run — the eLicense roster form, its POST,
and the CSV it builds (~2 MB, ~4 s). 12,309 contractor licences on 2026-10-07.
The form's State box is sent blank on purpose: its default (Ohio) drops the 1,929 licences held
by out-of-state contractors.
One row per licence number: the roster's licence-and-company pairs (12,495 rows for 12,486
licences) are collapsed, preferring a real company over 'ESCROW' or blank; escrow-only licences
are flagged in_escrow.
Filters: trade, status, county (licence holder's), company city, company ZIP, name — scalar and
list keys. An unrecognised value is dropped with a log line; a filter with no recognised value
returns a free input_error row rather than widening to the state. maxResults (default 500,
max 100000) is a run-wide cap. Chunked push-then-charge at $0.004 per licence.
