| Business | Phone |
| Architecture Engineering 10 City Hall Pl, Plattsburgh 12901 | (518) 561-1598 |
| Dodge Chamberlin Luzine 14 Healey Ave, Plattsburgh 12901 | (518) 563-9418 |
| Fred Keil Architecture 16 Brinkerhoff St, Plattsburgh 12901 | (518) 825-5800 |
| Mc Kenna Associates 1 Oak St, Plattsburgh 12901 | (518) 561-0303 |
| Virtus Architecture 55 Clinton St, Plattsburgh 12901 | (518) 561-1282 |