First step to making a home is buying one. First Interstate Bank Built for you. The right home loan can be the beginning of mighty sweet memories. Let's put over 50 years of full-service community banking to work for you. Find the home loan that's built for you at firstinterstate.com Member FDIC. Equal Housing Lender. First step to making a home is buying one. First Interstate Bank Built for you. The right home loan can be the beginning of mighty sweet memories. Let's put over 50 years of full-service community banking to work for you. Find the home loan that's built for you at firstinterstate.com Member FDIC. Equal Housing Lender.