Highlights: The average size of new apartments in the U.S. in 2018 is 941 square feet, 5 percent smaller than ten years ago, with studio apartments shrinking the most, by more than 10 percent; meanwhile, overall rents have increased by 28% over the same period of time. The average size of apartments regardless of year … Continue reading As Apartments Are Shrinking, Seattle Tops New York with the Smallest Rentals in the U.S.