GroundRosterSingleton GradingLicensed
| Name | Singleton Grading |
| License number | 1820 |
| License type | Certified Onsite Wastewater System Contractor - Grade II |
| License status | Current - on the NCOWCICB certified list effective 2026-09-16 |
| Based in | Advance, Davie County, North Carolina |
| Phone | (336) 998-8461 |
"Based in" is the city and county of the address on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.
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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 the license details exactly as they appear in North Carolina's official licensing records; we do not vouch for the business itself. Before hiring, look up license #1820 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 2026-09-23. Verify at the official source.
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