The Sinclair Home is the prehistoric dwelling of Earl and family on Dinosaurs. In traditional sitcom fashion, the house is frequently shown in establishing shots between scene changes and commercial breaks. A miniature model was used for these scenes. The interior of the home features dirt walls (so hard to keep clean), and the two most treasured appliances, the refrigerator (home of the Refrigerator Creatures), and the television set.

In "Monster Under the Bed," it was revealed that the Sinclair Home was unknowingly built above the monster's hole until it was moved so that it wasn't on top of his home anymore.