66 Waterloo Street When Viewing This Property On Realtor.ca Please Click On The Multimedia or Virtual Tour Link For More Property Info. Waterloo Clinic & Professional Centre is centrally located in uptown Saint John with suites starting at $500.00 monthly, ranging from 300 to 1, 000 square feet, with expandability to 2, 500 or more. Whether seeking your first office, a medical clinic, non-profit, or serving vulnerable populations, affordable opportunities abound. This building is within walking distance to many uptown businesses and restaurants yet offers FREE parking onsite. Allow yourself room to grow by staying under budget. (id:203)