The three most influential people in Darius Tanz's upbringing were his uncle, Nicolas, and his neighbors Tess and Lazlo. Combined, their names bear a striking resemblance to inventor Nikola Tesla
Santiago Cabrera (Nicholas Tanz) changed his English accent (Nobility) in Season 1 to another English accent (Cockney) in Season 2.
The first season was filmed in Toronto, Ontario. The show relocated to Vancouver, British Columbia for its second season.
S 2 Nick Tanz actually is an Australian accent with a touch of South African sneaking in there. Definitely not Cockney.
The Acadia bookstore used in episode 2, Another Trip Around The Sun, is a real bookstore on Queen St. in Toronto, Ontario, Canada.