Buying real estate continues to be cheaper than renting in the vast majority of major U.S. cities, according to a quarterly rent vs. buy index from real estate search and marketing site Trulia. The index compared the median list price and the median annualized rent on a two-bedroom apartment, condominium or townhouse in the country's 50 most populous cities. According to the index, the cost of buying was less than renting in 37 of the 50 cities (74 percent) as of July 1, 2011. About the same share, 78 percent, favored buying over renting in Trulia's last index report, released in April. Trulia defines total costs of homeownership to include "mortgage principal and interest, property taxes, hazard insurance, closing costs at time of purchase and ongoing (homeowners association) dues and private mortgage insurance, where applicable. It also includes an offset for the tax advantages of homeownership, including mortgage interest, property tax and closing cost deductions."