Houses in hot climatic regions are composed of thick mud because it keeps the dwelling cooler than an open one with no roof. The mud acts as a barrier, preventing heat from entering homes. The majority of mud houses are found in rural areas where the weather is mild in the summer and warm in the winter. They are also used for economic reasons. If you can't afford to build a house out of stone or wood, then a mud house is your next best option. These houses are easy to construct and only require basic tools. In fact, some families may even own the land upon which they build their mud houses, which saves money since you don't have to pay for land fees or taxes. The thick layer of mud used to build a mud house provides much-needed insulation against heat and cold. The thicker the mud wall, the better it insulates against heat and cold. A thin shell of plaster does not provide enough protection from the elements. Mud houses are also very affordable. You can build a decent-size house for less than $20,000 these days. That's less than half the price of many traditional wooden buildings. And if one part of the house needs repair, all you need to do is scrape off some of the mud and re-coat it on the damaged area. This process allows you to keep living in your house while it is being repaired.