WELCOME TO THE 505 ON WALNUT SYRACUSE UNIVERSITY APARTMENTS PET-FRIENDLY OFF CAMPUS HOUSING The 505 on Walnut features brand new, exclusive “SMART” Syracuse University apartments for students looking for a unique living experience. Upscale, modern and high-tech are just a few of the terms often used to describe our community. SU students looking for the perfect combination of comfort, convenience, and technology will enjoy the lifestyle that The 505 on Walnut offers.