Floor plan design of a first floor with sunken courtyard

Quick answer：

A floor plan design for a first floor featuring a sunken courtyard involves creating a layout that integrates a below-ground courtyard space with the residential or commercial area above it. This design often requires careful planning to ensure adequate natural lighting and ventilation for the lower level, as well as to maintain structural integrity. The sunken courtyard can serve multiple functions, such as providing a private outdoor space, enhancing the architectural aesthetic, or increasing the usable floor area.