Contractor in Ashtabula, OH.
Koski Construction Co. appears in Ohio license records as a contractor based in Ashtabula, OH. The record lists a OSHA_Establishment license (#OSHA-8e8b4a5a84cc97).
Information sourced from public state license records — not yet verified by the business owner. Always confirm credentials before hiring.
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Create a free account Or subscribe to message in-appCheck license #OSHA-8e8b4a5a84cc97 on the Ohio OCILB lookup and the BBB the day you hire; status can change after Bidroom's last import (2026-05-02).
Koski Construction Co. is a contractor based in Ashtabula, Ohio. Their license classification is Road construction.
Yes. Koski Construction Co. holds Ohio OCILB license #OSHA-8e8b4a5a84cc97. Verify the current status on Ohio OCILB before hiring.
Koski Construction Co. is based in Ashtabula, OH 440047919.
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The fastest way is to post your project on Bidroom — Koski Construction Co. and up to 2 other verified contractors in Ashtabula can bid on it, and every quote includes itemized pricing + a written scope of work.
Not yet. This listing was created from public Ohio license records but hasn't been claimed by the owner. The license info above is from official records, but the business hasn't confirmed its services, hours, or current availability with us yet.
Contractor vetting checklist · Cost guide · Look up this license at the state board