I’d much prefer 700 sqft or so and find this average home size increase harmful to my quality of life. Granted it’s less extreme in urban areas I prefer to live, but it still dominates new development of single dweller units. I basically have to leave the city now to have a yard for my pup to run around in, because the incentive is to sell luxury or rent to multiple tenants. We’d be perfectly happy with a tiny house in a tiny yard. I would and even continue to pay a premium to do that where I can access other amenities on foot. It just increasingly isn’t possible to do that.

That’s a 43% increase, and unsourced, may be an outlier skewed mean?

The same houses have increased by that price.

So no. Size isn't what's causing this.

How do you figure? I've avg size of houses are going up, you're paying for extra house.