There are many interior design styles or elements that can make a house look outdated. For instance, shag carpet was extremely popular in the 1970’s, but has not made a comeback. Additionally, pastel subway tile in every color of the rainbow was the standard over the 1950’s. Today, it’s easy to identify a bathroom from that era just simply based on the tile. What makes a house look outdated is incorporating too many interior design trends. Timeless design is achievable, by focusing on classic elements that stand the test of time.