Plumber in Deforest, WI.
John Olson appears in Wisconsin license records as a plumber based in Deforest, WI. The record lists a Master Plumber license (#223711) with status “Active”. It is listed as valid through 2028-03-31.
Information sourced from public state license records — not yet verified by the business owner. Always confirm credentials before hiring.
This listing was created from public license records. The owner hasn’t claimed it yet — claim it now and we’ll build you a free professional website at bidroom.io/pro/john-olson.
Contact info is revealed to anyone with a free Bidroom account. Create yours to unlock contact details across the Bidroom directory — then subscribe if you'd like to message verified pros directly inside the app.
Create a free account Or subscribe to message in-appCheck license #223711 on the Wisconsin licensing authority lookup and the BBB the day you hire; status can change after Bidroom's last import (2026-05-12).
John Olson is a plumber based in Deforest, Wisconsin. Their license classification is Master Plumber.
Yes. John Olson holds Wisconsin licensing authority license #223711 (status: Active). Verify the current status on Wisconsin licensing authority before hiring.
John Olson is based in Deforest, WI 535321414.
Contact information (phone, email, website) is shown to anyone with a free Bidroom account. Create a free account to reveal John Olson's contact details, then subscribe if you'd like to message them in-app.
The fastest way is to post your project on Bidroom — John Olson and up to 2 other verified plumbers in Deforest can bid on it, and every quote includes itemized pricing + a written scope of work.
Not yet. This listing was created from public Wisconsin 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