| Business | Phone |
| Oliver Engineering 935 Brighton Ave, Portland 4102 | (207) 828-7940 |
| Gza Geo Environmental Inc 4 Free St, Portland 4101 | (207) 879-9190 |
| Housing Strategies 76 Mackworth St, Portland 4103 | (207) 828-9435 |
| Richard N Berry Pe 650 Brighton Ave, Portland 4102 | (207) 774-8214 |
| Bowker & Assoc Engineers 477 Congress St # 1004, Portland 4101 | (207) 874-8077 |
| Jacques Whitford Co 75 Pearl St # 410, Portland 4101 | (207) 761-7790 |
| Brown & Caldwell 477 Congress St, Portland 4101 | (207) 253-1991 |
| Maguire Group Inc 400 Commercial St # 3a, Portland 4101 | (207) 761-1588 |
| Stratex 100 Middle St, Portland 4101 | (207) 780-9698 |
| Cmi 138 Glenwood Ave, Portland 4103 | (207) 772-3489 |
| Criterium Engineers 22 Monument Sq # 600, Portland 4101 | (207) 828-1969 |
| Mbp Consulting 10 Woodfield Rd, Portland 4102 | (207) 773-9590 |
| Mc Hale & Assoc 70 Center St, Portland 4101 | (207) 874-2802 |
| Devine Tarbell Assoc 970 Baxter Blvd, Portland 4103 | (207) 775-4495 |
| Urs Corp 477 Congress St, Portland 4101 | (207) 879-7686 |
| Wright-Pierce 75 Washington Ave, Portland 4101 | (207) 761-2991 |