ON IMPROVEMENT OF THE DWELLING LEVELS BY MAKING ADDITIONS TO SMALL HOUSES FOR SALE : A study on the plan for improving house by the additions Part 1

Abstract

Housing stock in our country consists of many small houses which are already built. In recent years residential alterations and additions show a tendency to increase remarkably. The purpose of this study is to clarify how the dwelling levels are improved by making additions to small houses for sale. The results are as follows : (1) Additions are effective for improving the dwelling levels. (2) Improvements by adding rooms are more effective in the SDK houses-type than in the 3LDK. Most of the 3LDK are improved to 4LDK〜5LDK, and most of the SDK to 5DK. (3) Additions are begun soon after moving in new houses, and sooner in the 3DK than in the 3LDK. (4) The rates of houses provided with all of the necessary rooms (bedroom, dinning room, living room and guest room) are limited to 20 percents before additions, but come up to 80 percents after. (5) The rates of houses with bedroom for children and master's bedroom are lower in the SDK than in the 3LDK before additions, but almost the same in both houses-type after additions. (6) The rooms added in the 3DK (with living room) are different from those in the 3DK (with guest room) at the beginning. So the rates of houses provided with guest room in the 3LDK and with bedroom in the 3DK are shown much higher after additions.