| Company Name | Categories | City | State | Main Phone # |
|---|
| OR Concrete, Inc. | Concrete, Finishes | Bend | OR | 541-480-3674 |
| Oregon Equipment Service Corp | Equipment | Bend | OR | 541-388-2235 |
| Oregon Smart Home & Security | General Requirements | Bend | OR | 541-213-7177 |
| Oregon Truss | Wood and Plastics | Bend | OR | 541-382-6000 |
| Oregon Underground & Utilities | Site Construction | Redmond | OR | 541-771-0201 |
| Original Industries Incorporated | Specialties, Contractor | Prineville | OR | 541-588-7280 |
| Outbuilders | Special Construction | Redmond | OR | 541-923-5064 |
| Overhead Door Co of Central OR | Doors and Windows, General Requirements, Specialties, Equipment | Bend | OR | 541-389-3667 |
| Overland Company | General Requirements, Metals, Contractor | Redmond | OR | 541-410-1056 |
| P&C Construction | Contractor | Portland | OR | 503-665-0165 |