Registered public work contractors in Port Jefferson Station, New York
12 contractors and subcontractors based in Port Jefferson Station hold a certificate of registration in the state file of Oct 1, 2026; 2 are MWBE owned and 0 are associated with an apprenticeship program.
| Contractor | Certificate | Expires |
|---|---|---|
| BEAUSOLEIL CONSULTING SERVICES INC | 26-66YBC-CR | Feb 6, 2028 |
| Diamond Craft Builders Inc. | 25-65KGL-CR | Apr 7, 2027 |
| Dirt Diggers ICS Inc. | 25-65Z4J-CR | May 27, 2027 |
| DU- ALL INDUSTRIES, LLC | 25-65SSA-CR | May 21, 2027 |
| Eagle Entries and Access | 26-66CHU-CR | Mar 23, 2028 |
| FirstLine Perimeter Defense FirstLine Civil Construction LLC | 26-9YFK6-CR | Sep 28, 2028 |
| G.M.A. Mechanical Corp. | 26-673XT-CR | Jan 15, 2028 |
| GW Lock and Entry Inc. | 26-66EIV-CR | Mar 9, 2028 |
| KINTECH HEATING AND COOLING INC. | 26-66SXZ-CR | Apr 22, 2028 |
| Madison Industries Harbor Hills Construction, Inc. | 26-675J3-CR | Jan 21, 2028 |
| MM Steel Corp | 26-694A9-CR | Aug 25, 2028 |
| PRECISION ACOUSTICS, INC. | 26-9YRO1-CR | Sep 24, 2028 |
Alphabetical order — this site ranks no one. Certificates in the New York State Department of Labor file of Oct 1, 2026. Absence from a list is not proof a contractor is unregistered. How to read this.