This paper presents a detailed overview of the historical and technical evolution of vernacular architecture in the Al-Haouz region of Morocco, a building practice characterized by the use of local materials, like earth, stone and wood. Despite their sustainable nature, the knowledge of these techniques has declined in recent decades, leading to substandard construction, as evidenced by the widespread damage and collapse of many vernacular buildings during the M6.8 earthquake on September 8, 2023. Through archival research, fieldwork, and interviews with craftsmen, this study documents key techniques. The study analyzes the structural principles behind durable and earthquake-resistant buildings, emphasizing foundation design, wall thickness, and symmetrical floor plans. Moreover, the research explores the fabrication of key building elements, like stone foundations, earthen walls and wooden roofs. These findings offer a sustainable, earthquake-resilient building approach that can serve as a model for both local and global construction practices.