Cooper Valley is a new community with homes for sale in Joshua, TX. John Houston Custom Homes is a Joshua home builder with communities in the Dallas/Fort Worth area. Now Selling! Find yourself home in this secluded country feeling community, but still close to city conveniences in Joshua ISD. In Cooper Valley, you will find wonderful floor plans with incredible curb appeal at a very affordable price. Home sites in this community are 60'x110'. The Model Sales Office is located in Greenridge Estates at 264 Brazos St. in Burleson, TX. Model hours are 10am-6pm Monday-Saturday and 1pm-6pm on Sunday.