Smaller houses on the rise. Are the days of the McMansions over?

For decades, building new meant building bigger. Down came the bungalows and ranch homes and up went the sprawling McMansions.

But for the better part of the last decade or more, the median home size has been shrinking, hitting a low of 2,210 square feet, down from 2,500 square feet in 2015, according to data compiled by the National Association of Realtors.