A casita is a small, self-contained dwelling that is typically detached from a main home but located on the same property. It is a versatile space that can be used for a variety of purposes, such as a guest house, a home office, a studio, or a living space for aging parents or young adults. Casitas usually have their own bathroom, bedroom or bedrooms, and a kitchen or kitchenette, and they provide a separate entrance and amenities like an eating space. They are often smaller than the main home on the property, ranging from around 500 to 1,500 square feet of living space. Casitas are becoming more popular as multi-generational homes become more common. The cost of building a casita depends on various factors, such as the size and amenities included.