Google is working with local officials in three more cities to plan potential fiber builds. Irvine, California, Louisville, Kentucky, and San Diego, California, are now among the cities that will get Google Fiber if they can set up a feasible plan with Google.

"[W]e’ll work with Irvine, Louisville and San Diego to conduct a detailed study of factors that affect construction, such as local topography, housing density, and the condition of existing infrastructure," Google said in its announcement today. "Meanwhile, cities will complete a checklist of items—such as providing a map of utility lines—that will prepare them for a large-scale fiber build."

There's no guarantee this will result in Google Fiber builds in all three cities, but that's the goal. Google Fiber's gigabit Internet service costs $70 a month, or at least $130 if you also buy TV service. Slow Internet service of just 5Mbps downstream and 1Mbps upstream is available without monthly service payments, but it requires a $300 construction fee. That can be made as a one-time payment or divided into $25 installments over 12 months.

Google Fiber is available in parts of Kansas City, Kansas; Kansas City, Missouri; Austin, Texas; and Provo, Utah. Builds are confirmed in Salt Lake City, Utah; San Antonio, Texas; Raleigh-Durham, North Carolina; Charlotte, North Carolina; Atlanta, Georgia; and Nashville, Tennessee. Several other cities besides the ones just announced today will get Google Fiber if they can meet Google's standards.