264 Augusta Avenue was constructed in 1889/1890 and replaced an earlier structure on the site. 

264 Augusta Avenue was originally a semi-detached house. Its southern half (262 Augusta Avenue) was demolished and the lot consolidated as part of the adjacent St. Stephen's Community House Property (258 Augusta Avenue). 264 Augusta Avenue itself is presently consolidated as part of the property to the north (264-268 Augusta Avenue). 

The first occupant of 264 Augusta Aveune was William H. Steele who resided here from 1890 until 1900. William H. Steele was a travelling representative / salesman for John W. Scales - a wholesale tobacconist who was based in Toronto.  

As of 1901, 264 Augusta Avenue was home to Edgar L. Laur and William B. Laur - a commercial merchant. The Laurs were still at this address as of 1905. 

Subsequently, by 1910, 264 Augusta Avenue was home to Ellen Gallagher - the widow of Andrew J. Gallagher. 

The upper levels of 264 Augusta Avenue have been reclad with stucco. 

264 Augusta Avenue has been derelict and vacant since approximately 2010. The property is in a deteriorating condition and its future is uncertain.