Study On The Market Comparison Approach Of The Real Estate Appraisal

The market comparison approach is universally recognized as one of the simplest, the most direct and frequent methods in the international evaluating system of real estate. On one hand, compared with other methods, the working principles of market comparison approach are easy to understand; on the other hand, it directly reflects the situation of the real estate market. China Real Estate Regulation stipulates that if conditions permitted, it is better to use market comparison approach to evaluate both land and real estate. the effect of real price, the content, the principle and the characteristic of real estate, the utilization principle ,the step and the present conditions of using market comparison approach are analyzed theoretically, the difficulty and the problems, that the choice of compared examples at will ,the factor revise subjectively and incompletely, the choice of transaction case uneasy and at present, the fuzzy theory mole of market comparison approach has some unscientific nature and unfairness, which exit in the process of using market comparison approach, are concluded. So it is urgent to seek more scientific, reasonable estimate models and the process of scientifically using the market comparison approaches. This article mainly discussed the application of fuzzy theory in the market comparison approach, and in base of the real estate appraisal theory and the newest research results of fuzzy theory, the fuzzy mathematical model of the market comparison approach is established: In the process of revising the region factor and the individual factor, When determining the factor, which influence the price, the Delphi is used. When determining how similar the facers are, the Subordination function is used. When determining how important the factor is, the AHP and Fuzzy factor methods are used. When choosing compared example, the similarity degree is used. When determining the ultimate cost, the index method is used. Finally aimed at the present situation of lacking cases in the store house in our Country, some suggestions are given, the research results are concluded, and point out the market comparison approach has a close relation with computer, so it should enlarge the using of computer in the market comparison approach.