It appears that William Edmund Thompson built this house, which first appeared in the Vancouver directory in 1900.
W E Thompson – Residence for Sale – Vancouver World – July 27 1906 – page 17
There are no references to this property in Heritage Vancouver Society’s database of historic building permits: http://permits.heritagevancouver.org/index.php?cID=1 [searched July 31, 2013].
This address was later the site of a new building that held the Canadian Imperial Bank of Commerce. After the bank moved out, the building became a Dairy Queen location.
Vancouver directory listings for 821 Denman Street:
|1900 to 1906||Thompson, William Edmund|
|1907||Macaulay, Henry Charles|
|1909 to 1910; 1917 to 1920;||O’Brien, William Edward|
|1911||Elkin, Frank Lusty|
|1913||Evans, William D.|
|1914||Ravey, Martin James|
|1915 to 1916||Murphy, Agnes|