At that time, there were about 400 landowners, and instead of compulsory acquisition, mutual agreement on urban development was reached through individual negotiations, research groups, and study sessions. Thanks to this process, Roppongi Hills is considered a textbook example of urban regeneration in Japanese history.
The fact that 80% of the original landowners successfully re-entered after the development was completed is an unusual case, and Cho Min-su questioned whether such a high re-entry rate could be achieved again. He explained, "It took about 14 to 15 years just to acquire the land. At that time, there were about 400 landowners, but instead of compulsory acquisition, they visited each person, negotiated, and continuously held research groups and study sessions to fully reach mutual agreement and consent on urban development. So, it is a product that is like a textbook for urban regeneration in Japanese history."
He continued, "Given that 80% of the more than 400 original landowners actually returned after the development was completed, it is exceptional, and I doubt such a probability will ever occur again."