It pays less and less to buy and flip a home these days. The typical home flipping profit margin fell in the second quarter to its lowest level since 2008, with a typical return of 25.1% before expenses. That's according to an analysis by Attom, a real estate data company. Rising home prices are driving up acquisition costs, making flipping less profitable. The median price for a flipped home reached a record high of $259,700, according to Attom. Meanwhile, with many aspiring homeowners priced out of the market, real estate investors are taking up a bigger share of U.S. home sales overall.