smart-sized Share definition Flag A category of residential designs that have 401 sq. ft. to 700 sq. ft. of area. With 70% of households in the US having only 1 or 2 occupants, it is time for a shift to smart-sized homes. smart-sized by Mrs Ingleton August 24, 2019 0 0 Get merch Get the smart-sized mug. Buy Now — $32.95 See more merch