GroundRosterCornerstone Contracting LLCLicensed
| Name | Cornerstone Contracting LLC |
| License number | 11857, 11877 |
| License type | Certified Onsite Wastewater System Contractor - Grade IV |
| License status | Current — on the NCOWCICB certified list effective 2026-07-15 |
| Location | Columbus, North Carolina |
| Phone | (828) 989-0845 |
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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 North Carolina's official licensing records; we do not vouch for the business itself. Before hiring, look up license #11857, 11877 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: NCOWCICB - certified onsite wastewater contractor and inspector list, last checked 2026-08-16. Verify at the official source.
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