Fair enough. Back then, the sort of house I was brought up in usually had only one light in the lounge (but often a separate dining room to 'cancel' that), no 'outside front' light and often no separate toilet - so, compared with yours, probably 8, 9 or 10. I would think that significantly more than 10 lights would have been unusual, until one moved up to larger (4+ bedroom) houses.
House! You were lucky to live in a house! We used to live in one room, all twenty-six of us, no furniture, 'alf the floor was missing, and we were all 'uddled together in one corner for fear of falling.
