The facades of buildings stand as one of the most influential aesthetic elements in urban and rural districts, serving as a boundary between exterior and interior while historically expressing various cultural and climatic functions. In Mazandaran Province, Iran, historical and rural areas have often been overlooked, leading to inappropriate approaches in reusing and renovating these buildings without considering their values. This study aims to analyze the characteristics of the facades of various historical and rural houses to provide a solid foundation for architects dealing with their reuse and renovation or the design of extensions to the existing buildings. In addition to discussing practical applications, this paper offers a methodological approach for scholars active in the field of rural architecture. The research method includes an analysis of several historical houses, drawing from both literature and field studies. The formal approach has been chosen to align with the research goal. The sixteen selected cases are situated in the historical and rural districts of Alasht, Lafour, Qaemshahr, each built in different historical periods of Iran. Given that many historical houses in this area are not officially listed as heritage buildings and no data regarding them are available, the researchers conducted field surveys and interviews with residents to collect the necessary information. The investigation focused on facade elements, including the pattern of openings and the materials used in the selected houses. This research led to the documentation of the facade shapes in the rural areas of Mazandaran Province, highlighting the necessity of documentation to establish a knowledge base before reuse, renovation, or design within these historic regions. This approach could serve as a model for other regions and countries.