No a lot of new builds are being sold for buy to rent or as investments and NOT lived in.
What do yuo mean by lower occupancy levels, do you not watch housing programs 3-4 bed hosues are being rented a HMOs of 4 bedrooms or more, that's more people per house NOT less.
Not in the inner cities unless you can provide a link to prove it. How about the rich who are joining hoses together and getting the basement turned into private cinimas.
Also those that do own their own home are reducing not increasing even with those buying coincil houses, most morthages now are shared yuo part rent part buy.