Brumas. I can't understand why there is a gap in the balustrade of the balcony? Maybe for access or perhaps loading goods on or off the balcony. I have "lightened" the picture up a bit and the man on the balcony reminds me of my father. With all the rubbish in the yard and the packing cases in the shed, It could be a junk yard of some kind. Those chimneys are unusual but there are normal looking chimneys elsewhere in the picture. The postage prices you quote are pre WW2. I think postage for a letter at the start of the war was 1½d Postcards would have been cheaper of course. I will have a guess at a "Borstal" type of building for those in the background..