On the other hand, its parallelogram shaped plan, which was caused by the acute angle of north side of the site, makes it easy to divide internal spaces into various sizes. In this project, several bedrooms and storages are required, and center aisle is effective for making access to number of spaces though proportion of the spaces is not appropriate if it had a rectangular aisle in rectangular plan. In this case, however, locating rectangular aisle in parallelogram plan generates ideal and convenient proportion of spaces, also thanks to that, it enables to have requested numbers of rooms.