The San Diego region’s real estate market posted significant gains in March of 2016. According to the San Diego Association of Realtors, 1,885 single-family homes changed hands in March, up 33% over February. Condo and townhouse sales were up 26% over February, with 998 sold in March. The median sales price of houses last month jumped 5% to $551,000, and 7% over March 2015. The median sales price of condos climbed 3% over February to $360,000, and 4% over March 2015. One of the most expensive condominiums in San Diego County history sold last month — a 3-bedroom, 4,400-square-foot penthouse on Harbor Drive downtown — for $6,275,000. The most expensive single-family home sold in March was a 3-bedroom, 4-bath, 1,840-square-foot home in Del Mar for $10,800,000.