Hi Jamie
Welcome to the forum, I'm pretty certain I have posted these photo's before on the thread Roy has directed you to, but as it is a pretty long thread it might take you hours to find them.
Your Nan living at 74 Cato Street North would have lived near the top of the hill on the left hand side of the road opposite the Albion Vaults public house just a few doors short of where E N Williams Co Ltd on the first photo, the actual house would have been in the vicinity of PC Tools Ltd now,
The other photos show The Albion Vaults and a view looking up the street from Saltley Road end which shows the old Brewery building (the large building) which was a Tube Bending factory when I worked there for a short while in the 60's.
I'm sorry I can't manage to find a photo of your Nan's house.