Row house sunken courtyard plan

Quick answer：

A row house sunken courtyard plan is a architectural design where a courtyard is situated below ground level within a row of houses. This design creates a semi-private outdoor space that is accessible to each house in the row. It is often used in urban settings to maximize space and provide a sense of privacy. The plan would typically include details of the courtyard layout, the surrounding house structures, and any access points or stairs leading to the sunken area.