Somerset is a new community with homes for sale in Mansfield, TX. John Houston Custom Homes is a Mansfield home builder with communities in the Dallas/Fort Worth area. Now Selling Phase 2! This master planned community offers convenient access to both Hwy 287 and 360, and is located within the highly prestigious Mansfield ISD. This family friendly community offers amenities such as a pond, resort-style pool, and pocket parks that you and your entire family can enjoy! You will fall in love with our open concept floorplans and exquisite stone/brick exterior layouts. We offer a variety of lot sizes. Home sites start at 70' wide.