More than 70 percent of U.S. single family homes were built before 1990, according to new research from RealtyTrac. That means fewer homes available for sale that are less than 20 years old but also better deals for potential buyers. Jake Adger, chief economist at RealtyTrac, said the higher percentage of homes that are at least 20 years old is eye-opening but also an opportunity for buyers. According to Adger, buyers willing to take on an older home in need of some rehab will likely be able to purchase it at a lower price point and with less competition. This year, 60 percent of home sales have been houses built before 1990. Those homes sold for an average price of $233,221. Homes built after 1990 sold for an average of $256,292. More here and here.