Why would the early temple have been much like a house?

Early settlers began to build temples at selected spots in their villages. The earliest known temple was a small shrine made of unbaked bricks. These early temples were much like a house because they were small in size. There used to be an open courtyard around which rooms were constructed. Temples were the residence of various gods. Temples also had their outer wall going in and out at regular intervals, which no ordinary building ever had.