Ready to buy a new home? We're a mortgage broker located in Chattanooga, TN, and affiliated with D.R. Horton, America's Builder. DHI Mortgage was created for one purpose - our customers. We're here to provide as seamless a homebuying experience as possible with your financial goals in mind. That was D.R. Horton's mission more than 40 years ago, and it's still the same today.