Property was formerly known as 189-191 College Street. 

The property was constructed c.1886-1887 as as semi-detached residential building, first occupied by Mary Mitchell and her husband J.E. Mitchell, of Mitchell, Miller and Co. (a storage company), and Edward Moore, who was a money broker.

Occupants of this property did not remain longer than five years, and The Toronto School of Languages as the first long-term tenant (1915-1925), and the property was converted into commercial use for the very first time, and reverted to residential after the Toronto School of Languages.

The Royal Canadian Institute, Canada’s oldest scientific society that was formed in 1849, Toronto and known today as RCIScience, relocated to 191 college occupied the building for over thirty years beginning 1952, until 1986. The reason for the relocation was because their original location (198 College st), on the University of Toronto campus was to be demolished due to the construction of the Walberg Memorial Building in the late 1940s.

It has been home to Prenub Pub since 2014. 

A 31-storey mixed-use rental building (490 units) entirely out of mas timber designed by Icon Architects for Unix Housing Group is proposed for this site.