A casita is a detached, freestanding structure — typically a guest house with its own entrance, bedroom, bathroom, and sometimes a kitchen. It functions as an independent living space separate from the main home. A room addition is built onto the existing house, expanding its footprint. Central Las Vegas lots are often large enough to support either option, which gives homeowners more flexibility than those in newer communities with tighter lot coverage limits. Kingdom & Co. designs and builds both types.