elder
Striker
land in the larger cities or popular areas is generally fairly expensive and block sizes are usually around 500sqm - 600sqm in size. most people want to live in either larger cities, towns or close to the beach but still within urban centres so demand is still very high, hence expensive land prices per sqm and smaller blocks of land.
If you look in more rural areas then block sizes tend to get larger.
houses themselves have gotten bigger recently though, most new houses are 4/5 bedrooms and just about fill the blocks of land they're built on. i'd rather have fewer rooms and more outside (living) space but i'm in the minority here.
