The number of sales of single-family homes in Sarasota County increased by 0.5 percent between 2017 and 2018, according to new figures published by the Realtor Association of Sarasota, while sales of single-family homes rose by 7 percent in Manatee County. Townhouse and condo sales also increased in both counties: They rose by 8.1 percent in Sarasota County and by 11.1 percent in Manatee County.