GroundRosterJohn W Goodwin Jr ConstructionLicensed
| Name | John W Goodwin Jr Construction |
| License number | 837, 843, 844 |
| License type | Certified System Installer |
| License status | Current - Maine DHHS roster, expires 2029-12-31 |
| License expires | 2029-12-31 |
| Based in | Southwest Harbor, Maine 04679 |
| Phone | (207) 244-7805 |
"Based in" is the city 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 Maine's official licensing records; we do not vouch for the business itself. Before hiring, look up license #837, 843, 844 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Maine DHHS - Certified System Installers, last checked 2026-08-17. Verify at the official source.
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