In the mixed land use central business district, the promotion of urban residence is still very important political issue. Because there are many small lots which cannot make use of the designated high floor area ratio, the lot-consolidation is expected to be one of the effective ways for guiding a housing supply, although it is likely to move away existing residents living in such small lots. This paper examines the relationship between project decision makers and a housing supply of the lot-consolidation in the Kanda Sakae district - a mixed land use area in the center of Tokyo. The case study indicates that, depending on the location, the lot-consolidation of which project decision makers have been living in the case study area tends to supply their own houses, although the other types of lot-consolidations tend to supply no houses.
