| Business | Phone |
| Building Systems Resources 7900 Se 28th St # 200, Mercer Island 98040 | (206) 230-0306 |
| Development Services Inc 9655 Se 36th St 100, Mercer Island 98040 | (206) 236-2756 |
| John L Elmer & Assoc 2707 64th Ave Se, Mercer Island 98040 | (206) 236-3004 |