I tried googling about house size, and I found this interesting info, apparently there was a reason houses were getting so big, but now they are getting smaller again.
Article I read:
The square footage of completed homes has increased over the past two decades but has been declining in the past few years.
The median single-family house completed in 2020 had a floor area of 2,261 square feet. This is around 90 square feet, or 4.2%, larger than the median house built in 2010 and around 200 square feet, or 9.9%, larger than the median in 2000.
The median square footage of a new completed house reached a high of 2,467 in 2015. Except for a slight increase in 2017, the median square footage of new completed homes has been declining ever since.
Rose Quint, National Association of Home Builders' assistant vice president for survey research, told Insider the average size of new homes started in a year increased from 2009 until it peaked in 2015 because mortgage lending became difficult after the housing
recession .
"And as a result, many buyers, even financially solid buyers, were shut out of the new home market," Quint told Insider. "Particularly younger and first-time buyers were shut out of the market by the absolute tightness in the underwriting of mortgage loans."
Because of this, Quint said single-family homes being built "reflected the preferences of those buyers that were still in the game." These buyers were typically wealthier and had equity in their current homes meaning they could then sell their homes and trade up.
"And so, as a result, when you look at the characteristics overall of the new homes that were started between '09 and '15, you'll see that homes got bigger and bigger, and they were more loaded with amenities year after year steadily between '09 and 2015," Quint said.
But after 2015, the average size of homes has declined. Quint said this is because builders were responding to a market with more younger and first-time homebuyers. Millennials were also in their prime home-buying years, and underwriting wasn't as hard as it was years earlier.