In this study, we investigated the changes in land use before and after the land readjustment project and its background, as well as the characteristics of vacant land in the Akahama district of Otsuchi Town, which was a fishing village. The purpose is to clarify the factors that caused low- and unused land due to the lack of progress in building reconstruction within the project area and to consider preventive measures. Finally, we pointed out the necessity and importance of estimation of the future land use situation by carefully reading district characteristics in the future project.