GroundRosterSeth HolmesLicensed
| Name | Seth Holmes |
| License number | 05864 |
| License type | Septic System Installer |
| License status | Active — NH DES Designer/Installer roster |
| Based in | Hopkinton, Merrimack County, New Hampshire 03229 |
| Phone | (603) 731-4403 |
"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.
Request a quote from Seth Holmes
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 New Hampshire's official licensing records; we do not vouch for the business itself. Before hiring, look up license #05864 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: NH DES - Septic System Designers & Installers, last checked 2026-08-16. Verify at the official source.
Are you Seth Holmes? Claim this listing to show your business name on it. It's free, and we confirm every claim before anything changes.