Analysis of the Urban Renewal Strategies with Fuzzy Delphi Approach

Currently, the old houses more than 30 years are exceed 4.5 million in Taiwan. If it does not accelerate urban renewal and reconstruction, it will reach 6.4 million in ten years. "Urban renewal is not a goal, it is a tool". J. Q. Wilson mentioned it by his book named Urban Renewal in 1996. Since 2007, government promote renewal works energetically by the means of additional building bulk and tax reduce to achieve the fallowing goal: promote a well-planned urban land redevelopment, revitalize urban functions, improve urban living environments, and to increase public interest. In addition, the inability to implement various supporting measures have made urban renewal very difficult. In particular, urban renewal adopt the "Joint Construction Agreement". Consequently, this study proceeds to explore the main factors that affect urban renewal for joint construction agreement. Through the evaluation model and expert groups giving fuzzy values, access the relative importance of each factors by using Fuzzy Delphi method. The study found the critical factor and propose strategies for urban renewal development in the future to improve the quality and quantity of urban renewal.