As home prices increased this summer, so did rent for many tenants according to recent data. Home-buying costs this summer helped increase apartment demand giving many landlords the opportunity to increase rental prices. In the third quarter of 2013, the average monthly rent increased by 1% for the second quarter, averaging approximately $1,073. Rental prices have jumped 3% from this time last year. Additionally, apartment vacancy fell 0.1% in the U.S. More here