Spring Hill, TN is slated for a new neighborhood development that will double the number of residents in the next 13 years.  According to the Nashville Business Journal, the development called Echelon will feature 3,400 units and it is expected to bring 10,000 residents into the city by 2020.  This will be the first major development on the east side of I-65 at Jim Warren Road.  Echelon will be a traditional neighborhood development (TND) consisting of a town center with living space and retail surrounded by houses.  Other TNDs in middle Tennessee include Lenox Villiage in Nashville and Westhaven in Franklin.  The homes in this community will have rear-entry garages with alleys as well as front porches.  Echelon will also feature a 30-acre commerical town center accompanied by a school and city park adjacent to 2,100 single family homes, 436 condos, 600 townhomes, and 200 live/work units.  Affordable homes in all price ranges are one of the goals of the developers.  A community lake is also planned as well as a street under the interstate for access to the YMCA and city parks by bicycle. 

The site map below is of Lenox Village in Nashville.