This proposed redevelopment is getting some publicity — and thanks to Charles Gauthier of DVBIA for the lead.  Check it out HERE. PDF of floor plans HERE.

To quote the web site:

A 39,500sf renovation to consolidate and modernize the 3 buildings that make up 855 Granville Street . . .  The renovation taking place on 855 Granville will further consolidate and modernize the three buildings with a brilliant new articulated glazed look while respecting the existing heritage building facades. . . . Be a part of the trend and join the newly emerging technology demographic with major tech companies opening offices along Granville Street.

855.Granville

These plans look like a reworking of an earlier proposal by Studio One Architecture. You’ll need to click on Current Projects / Heritage Conversion.  There seems to be no direct link.