In 1999, Hillary initially started to design interiors, with 2002 being her launch of Hillary Hamilton Interiors. Along with her business start, she worked as Senior Designer for Laura Hunt from 2007-2008, and being a part of Dallas Design Group, Interiors. With her real estate license, Hillary became a part of First Texas Homes helping design/build and sell homes. Hilary Hamilton Interiors because a recognized firm that has been one to compete with ever since 2014. Working on a variety of design projects including a primitive contemporary ranch house and its guest house in West Texas, a high rise in Uptown, a remodel in University Park, and two new builds in Preston Hollow and HP, the creative design spans as large as Texas itself. Recently completing a traditional French style home and a small cottage style home of which both exude much elegance and charm, Hillary is working with builders and independent investors on many construction projects, with realtors, builders, friends, and clients being the company's biggest advocators.