Twin Hills is a new community with homes for sale in Arlington, TX. John Houston Custom Homes is an Arlington home builder with communities in the Dallas/Fort Worth area. FINAL HOMES AVAILABLE! Twin Hills is a charming community with 60'x120' home sites that offers beautiful new homes in the City of Arlington. Located in the desirable Mansfield ISD, between Hwy 157 and Hwy 287. This community allows easy access to shopping, recreation and dining. Visit our model home next door at Calender Crossing - 2514 Melissa Dianne Dr, Arlington, TX - open 10am-6pm Monday-Saturday and 1pm-6pm on Sunday.