Abstract
This paper aims to examine the consensus building process of condominium reconstruction project and to clarify roles of unit owners' management association in decision making. The process of consensus building among condominium owners consists of four stages: 1) preparation, 2) examination, 3) planning, 4) enforcement. And each stage consists of four procedures: A) organization, B) introduction of expertise, C) examination and coordination, D) decision making. On this process objection from some owners is the most serious problem, and to solve these problems management associationshould carry out two types of roles: coordination and initiative.