#MarketwatchMonday Time! When it comes to single-family houses, the study shows some impressive figures for the area. Miami Mainland Coastal houses sold for an average of $1.3 million, with a median price of $720K, a price per square foot of $516, and an average size of 2,183 square feet. Greater Miami Beach single-family home sales began to skyrocket with an average price of $4.4 Million, a median price of $2.2 Million, approximately $1,113 per square foot and an average size of 3,257 square feet. The Miami Mainland Coastal market witnessed a high price growth from 2020 to 2021, with a 21 percent increase in condos and a 26 percent increase in single-family houses, according to these remarkable data