General Contractors
From small to large, NEF has successfully worked with most of the commercial contractors in northern New England.
| Alliance Construction | Facilities Management Group | Nickerson & O'Day |
| Allied Cook | Four Seasons Foam | North Branch Construction |
| Arenco | Fournier Steel | O & G Industries Inc |
| Arthur Dudley Construction | Fry's Construction | O'Connells Construction |
| Associated Concrete Services | Ganneston Construction | Opechee Construction |
| Barr & Barr | Gilbane | Ouellet Associates |
| Batten & Shaw | H P Cummings | Palmer & Sicard Inc |
| Bauen Corporation | H. Carr & Sons Inc. | PATCO Construction |
| Baybutt Construction | Hardypond | Perry & Morrill, Inc |
| Bell | Harvey Construction | Pizzagalli |
| Benchmark Construction | HE Callahan | PM Construction |
| Blane Casey Construction | Hebert | Pochebit Company |
| Bob Dickinson | Hunt Construction | Portland Builders |
| Bond Brothers | Hutter Construction | Pro Track Drywall |
| Bonnette, Page & Stone | J B Sullivan | ProCon Construction |
| Boulos Property Management | J C N Construction | ReArch Company |
| Bowdoin Construction | J M Brown | Reed & Reed |
| Bread Loaf Builders | J.M. Brown, Inc. | Risbara Brothers |
| Breadloaf Construction | JCN Construction | RJ Griffin |
| Buck Construction | John Dargis | Roedel |
| Building Solutions | John Libby | Roland's Drywall |
| Bureau of General Services | Johnson & Jordan | Russell Construction Services |
| C M Cimino | JP Martin & Sons | Scott Mosher |
| Calpine | KBE Building | Sheridan Corp |
| Catalano's Construction | Kinsmen Group | Stabile & Wrenn Construction |
| CCB Inc. | K-Mac Construction | Stroudwater Construction |
| Cianbro | Knight Construction | Suffolk Construction |
| Cintas Corporation | Langford & Low | Sullivan & Merritt |
| Clark Metal Fabrication | Lawrence & Lynch | T. Buck Construction |
| Cobb Hill Construction | Ledgewood | Taggart Construction |
| Consigli | Lincoln Haney Engineering | Taylormade Builders |
| CYR Construction | MacMillin | The Robins & Morton Group |
| D G Morin | Maine Coast Construction | TLT |
| D.E.W. Construction | Mainland Structures Corp. | Tocci Construction |
| Daniel O'Connell's Sons | Marshall & Erdman | TRB Development Group |
| Dew Construction Company | Martini Northern | Trumbull Nelson Construction |
| Doten Construction | Miles Mann | Turner Construction |
| Doughty Polymers | Milestone Engineering | Turnstone Construction |
| Eckman Construction | Monitor Builders | Viking Lumber |
| EF Wall | MW Builders, Inc | William A. Berry |
| Engleberth | Naylor & Breen Con. | William H. Lane |
| Erland Construction | New Dimension | Wright - Ryan |
| Nial Construction | Wright & Morrissey, Inc. |