GroundRosterDiamond Contracting CorpLicensed
| Name | Diamond Contracting Corp |
| License number | 834 |
| License type | Licensed OWTS Contractor |
| License status | Licensed - Jefferson County |
| Location | Arvada, Colorado 80007 |
| Phone | (303) 456-7666 |
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How to verify this license
We publish this listing exactly as it appears in Colorado's official licensing records; we do not vouch for the business itself. Before hiring, look up license #834 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Jefferson County Public Health - List of Licensed OWTS Contractors, last checked 2026-08-19. Verify at the official source.
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