Zillow Update:  

 In half of U.S. metros, buying a home is a better financial decision than renting for buyers intending to stay in their home at least two years. The company’s analysis includes all costs associated with buying versus renting, including upfront payments, closing costs, anticipated monthly rent and mortgage payments, taxes, utilities, maintenance, and renovation costs.

The group also takes into account different asset streams associated with different housing situations. For example, a buyer's home equity is factored into the final figure, while a renter's ability to invest some of the money they would have spent on a purchase is factored into the final figure for comparison.

"Rents keep rising, and mortgage interest rates remain very low, which is helping to skew the rent vs. buy decision toward buying for those who can afford it. Many renters may ask themselves why renew a lease, when you can break even on the same home in less time in many areas," said Zillow Chief Economist Dr. Stan Humphries.