GroundRosterOsburn-Olson, L.L.C., dba Ryan Osburn Plumbing Inc
| Name | Osburn-Olson, L.L.C., dba Ryan Osburn Plumbing Inc |
| License number | 38583 |
| License type | Septic Installer |
| License status | Issued — Oregon DEQ |
| License expires | 06/30/2029 |
| Location | Warrenton, Oregon 97146 |
| Phone | (503) 717-3907 |
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What this license covers
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
How to verify this license
We publish this listing exactly as it appears in Oregon's official licensing records; we do not vouch for the business itself. Before hiring, look up license #38583 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Oregon DEQ - Sewage Disposal Service Licensed Businesses, last checked 2026-08-17. Verify at the official source.
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