According to the Center for Housing Policy, rents throughout the United States are rising faster than incomes by about $1.75 for every dollar earned. This means apartment owners may be reaching the peak of what they can charge for rent before forcing their residents to look for more affordable digs elsewhere. Even so, rent growth is not accelerating as much as researchers previously forecast. Reis Inc. reports only marginal increases -- increases that have made a significant difference for residents despite the fact that low supply and increased construction in prime markets should be hiking prices even higher. The combined cost of housing and transportation in the country's 25 biggest metro areas have increased by 44 percent since 2000. Read more.