Historical zone of the city of Yazd is recognized as one of the most valuable historical zones in Iran, and perhaps in the world. It is now as one of the main destination of national and international tourists. Historically, this zone was residential part of the city for higher social class groups high income people. However, it is now converted mostly to lower-income and often non-native social classes. This process gradually affected the deterioration of this city texture. One of the signs of exhaustion is the growth and increase of Brownfield areas in this zone. Furthermore, these spaces have destroyed visual landscape of the historical zone and have been converted to unusual activities and serious social problems. This problem has also led to urban sprawl in Greenfield peripheries of the city, indirectly. The methodology of this research is based on combination of SWOT analysis and fuzzy logic technique. In this method, certainty of internal and external factors converted to uncertainty and relative mode. The findings of this research suggest four strategies to develop these spaces in historical zone of the city of Yazd.