カテゴリー Ⅰ 日本建築学会計画系論文集第 82 巻第 741 号, ,2017 年 11 月 J. Archit. Plann., AIJ, Vol. 82 No. 741, , Nov., 2017 DOI

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1 カテゴリー Ⅰ 日本建築学会計画系論文集第 82 巻第 741 号, ,2017 年 11 月 J. Archit. Plann., AIJ, Vol. 82 No. 741, , Nov., 2017 DOI 広い持ち家に住む高齢単身夫婦世帯の割合が高い一次通勤圏の特徴 THE FEATURES OF SUBURBAN MUNICIPALITIES THAT THE PERCENTAGE OF ELDERLY SINGLE AND COUPLE HOUSEHOLDS WHO LIVE IN BIG DETACHED HOUSES ARE HIGH 五十石俊祐 * **, 石井儀光 Shunsuke ISOISHI and Norimitsu ISHII The purpose of this study is to clarify the features of suburban municipalities as the notion that elderly people who live in suburban areas change residence and put out their real estate assets in rental market to improve their living conditions. At first, we analyzed the number of elderly single and couple households who live in big detached house. The analysis revealed that about 3.7 million elderly single and couple households live in residences which are over 100 and about 42% of these households live in suburban areas. Then, we analyzed the features of municipalities where there is a high percentage of these households. The result of analysis show that about 38% of these municipalities are located in suburban areas and can further be classified into five types using follow parameter: households, residences, economic levels and industry. Keywords : Elderly household, Changing residence, Real estate assets, Suburban municipalities H26 59, % H26 1 2, % JTI 4 * ** 筑波大学大学院システム情報工学研究科大学院生修士 ( 社会工学 ) 国立研究開発法人建築研究所住宅都市研究グループ主任研究員博士 ( 都市地域計画 ) Grad. Student, Major in Policy & Planning Science, Univ. of Tsukuba, M.Social Eng. Senior Research Engineer, Dept. of Housing and Urban Planning, Building Research Institute, Ph.D. 2915

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8 ჿ ࠊ ᑐ ᕷ ࢱ 㒔ᕷ 㞳㛵 ࡀ ࡇ ࡀศ ࡗࡓࠋࡓࡔࡋࠊ㒔ᕷ ᗘ 㒔ᕷᅪ 㞳㛵 ࡀ ᣦ ࡉ ࡇ 15㸧ࠊ 1 ᅉᏊࡀ 㒔ᕷ 㒔ᚰ ע 㞳㛵 ࡋ ࡓ ᥎ᐹࡉ ࠋ ɡৎထ ແ ʟ ထ ٻ ᣂထ ᝅထ ᙸ ထ ထ ᩏҤࠊ ط ထ ൧ᙸࠊ ዩᢿࠊ ࠊ ɥ ထ ហ ထ ק ထ Ҥɻࠊ ٻ ᇦࠊ ᢋࠊ ଐήࠊ ᒉ ထ ᨕ ٽ ဋࠊ Ѩ ࠊޛ ࠊ ထ 㸲 ᆅᇦࢱ ᚩ ᛂࡌࡓᨭ ᪉ ๓❶ ศᯒ ࠊᆅᇦࢱ ࡗ ᑐ ᕷ ᚩ 㐪 ࡀ ࡇ ࡍࡇ ࡀ ࡁࡓࠋࡑࡇ ᮏ❶ ࠊ ᆅᇦࢱ ࡅ 㧗㱋 ୡᖏ ᣢࡕᐙ ㈤ ά ᨭ ࡘ ᐹࡍ ထ ο ࠊڡ ࠊޛ ๓ቭ ࡋ ࠊ ᆅᇦࢱ ᚩ ᇶ ࡁࠊ ᆅᇦࢱ 㐺 ఞ ࠊ ⅼထ ᙱ ထ ⅺ ထ ޛ ထ ࠊ Ҥឱ ࠊ ထ ဍ ࠊ ᧙ Ҿထ ʁᆞထ ๓ ࡋࡓ ࠊᆅᇦࢱ Ϩ ϩ ᕷ ቑຍ ࡀ㧗 ࡃ ᨻ ࡗ ࡇ ࠊఫᏯ㟂せࡀ㧗 ᆅᇦ ٶ ထ ٻ ԧᢼ ࠊޛ ኔ ࠊ ࠊ ᅕඕထ Ҥ Ҿࠊ ࠋࡑ ࡓ ࠊẸ㛫 ᴗ 㸦ᘓタ ᴗ 㸧㈤ ɤ ܡ ထ ʟҾࠊ ډ ஙထ ά ᨭ ࡀ ࢪ ࢫ ࡋ ᡂ ࡍ ᛶࡀ ࠋ ᦟ ထ ዩထ ࡁࡑ ᨭ ᪉ Ꮡ ᨭ ᢳฟ ࡍ ࠋ ރ ᢊࠊ ࡇ ᑐࡋࠊᆅᇦࢱ Ϫ㹼Ϭ ᕷ ቑຍ ᨻຊ ʖࠊ ᅗ㸯㸰 ᆅᇦࢱ Ϫ ᕷ ศᕸ ᣦ ࡀపࡃࠊᣢࡕᐙ ࡀ㧗 ഴ ࡇ ࠊఫᏯ㟂せཬ ᐙ㟂せ㧗ࡃ ࠋࡓࡔࡋࠊᆅᇦࢱ Ϫ ϫ ࡘ ࠊ ḟ ᴗᚑ ࡀẚ 㧗 ഴ ࡇ ࠊ ᕷ ෆ ࡋࡃ ࡑ 㞄つᶍ ᕤሙࡀ ᆅࡋ ࠊࡑࡇ ࡋ ᐙୡᖏࡀከࡃᏑᅾࡍ ᥎ᐹࡉ ࠋ ע ࡇ ࡋࡓ ᚩ ࠊᆅᇦࢱ Ϫ ϫ ࠊ つᶍᕤሙ ࡌ Ҥᢿထ ɶජထ ᕲ ထ ο ࠊ ᢂ ထ ᨭ ᢸࡗ ࡇ ࡀᨭ ᪉ 1 ࡘ ࠋ ٻ ᔺ ޥ ထ Јᩏ߃ထ ࡍ ᆅඖ ᴗ ཌ ࡋ 㧗㱋 ୡᖏ ᣢࡕᐙ ㈤ ά ࠊձ.ᆅᇦࢱ Ϫ㹼Ϭ య ࡅ㈤ Ҥထ ᒉఞထ ထ ݱ ڡ ထ ሇ ఫᏯࡀᑡ ࠋ ࡓࠊղ.ປ ࡍ ࠊ Ꮿ ᐙ㈤ ʁ Ҥထ Ӵͳɶ ځ ထ շ ࠊ ٶ 㐪ㄢ ᑐ ሙ ࡀ ࡀᏑᅾࡍ ࠋճ. ᇦҾࠊ ᒔஙထ നထ ᴗ ࡗ ࠊ Ꮿ ᑐ ᚓ ࠋࡋ ࡋ ࡀ ࠊմ. ชဋထ ݱ ထ ᔂቯ௨㝆ࠊᆅ౯ࡀῶᑡഴ ࡌࠊ ῶ ࡍ ㈨ ԧထ ኔ ထ Ҥထ ィ ࡋ ࡅ ࡅ ᚑ᮶ᆺ Ꮿ ࢫࢡࡀ ࡁ ᱅ກထ ܤ ᑸ ٽ ဋထ Ҥ᧙ထ ԧ ထ ԧ൦ထ 16㸧 ࠋࡇ ᑐࡋࠊյ.๓ᮇ㧗㱋 ୡ௦ ᣢࡕᐙ ㈤ ά ࡍ ሙ ࠊῶᦆ ィ ࢫࢡ ࠋຍ ࠊն.๓ᮇ㧗㱋 ୡ௦ ᣢࡕᐙ ᝅ ٻ ࠊ ࠊ ㈤ ά ࡍ ሙ ࠊᚑ᮶ᆺ Ꮿ ᪂ ࡍ ࢩ ࢥࢫ ൦ထ ᢚไ ࡁ ᮇᚅࡉ ὀ 13㸧ࠋࡇ 6 Ⅼ ࡍ ࠊ๓ᮇ ᅗ㸯㸱 ᆅᇦࢱ ϫ ᕷ ศᕸ 㧗㱋 ୡ௦ ᣢࡕᐙ ᅾ 㟂せ㧗 ࢫ ࢡ ᮇᚅࡉ ࠋ ग़Кထ ᡭࡀࡘࡅ ࠊᒃఫ ࡀ ᢸ ᡭ ࠊ ᴗࡀ ɤᇵࠊ ᢸࡍ ࡇ ࡃ ࠋࡑ ࡓ ࠊ ࢢ ᪉ἲḟ ᚑ᮶ ע ᆺ Ꮿ ᪂ ࡍ ࢧ ࢡ ࢥࢫ ᢚ ࡇ ٳ ထ ⅻ ࠊ ࠋ ࠊ๓ ࡋࡓ ࠊ๓ᮇ㧗㱋 ୡ௦ ᚰ ᒃ ఫ ព ᣢࡓ 㧗㱋 ቑຍഴ ࠊ ḟ ᅪ ఫ ထ ᙼ ࡗ ᣢࡕᐙ ㈤ ά ࡍ ࡇ ᐙィᨵၿ ᡭ ᯕ ޛ ထ ᚓ ࡇ 10㸧ࠊ ᴗࡀ๓ᮇ㧗㱋 ୡ௦ ᣢࡕᐙ ㈤ ά ᨭ Мఌထ ࡅထ Ҥ ዮࠊ ᢸ ࡇ ๓ᮇ㧗㱋 ୡ௦ ࡗ ࠋ ௨ ࡇ ࠊ㧗㱋 ୡᖏ ᣢࡕᐙ ㈤ ά ᨭ ཌ Ⴧᰋထ ټ ᱴ Ҙଔហ ק ထ ඕϋ ᡭẁ ࡋ ᮃ ࠋ ᡭ ࡋᡭ ࡀᆒ ࡍ ㄢ㢟 ࡀࠊࡇ ࡋࡓ ࡀ ᴗࡀከࡅ ᙜヱᕷ ࡀἲ ῶ ࡗࡓ ࢫ ពࡍ ࡇ ࡀ 㐍 ࠋ ᪉ࠊᆅᇦࢱ Ϭ ࡌ ࠊࡇ ࡋࡓ ࡀ㞴ࡋ ᕷ ᅗ㸯㸲 ᆅᇦࢱ Ϭ ᕷ ศᕸ 2922 ࠊ ௰ JTI බ ᶵ㛵 ༠ຊࡀᚲせ

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11 THE FEATURES OF SUBURBAN MUNICIPALITIES THAT THE PERCENTAGE OF ELDERLY SINGLE AND COUPLE HOUSEHOLDS WHO LIVE IN BIG DETACHED HOUSES ARE HIGH Shunsuke ISOISHI * and Norimitsu ISHII ** * Grad. Student, Major in Policy & Planning Science, Univ. of Tsukuba, M.Social Eng. ** Senior Research Engineer, Dept. of Housing and Urban Planning, Building Research Institute, Ph.D. In recent years, the associations in which the elderly households lend real estate assets to another household to help them change their residence have appeared. Although elderly households have much savings, they require an additional 60,000 yen to live each month. In addition, since the average life span has extended, there is a risk that they might use up their savings in later years of their lives. Real estate utilization of elderly households is expected as a means to improve this situation. Suburban areas have cheap rent rate compared to the central area of the city. Therefore, if the elderly households put out their real estate assets in the market, it will be possible to find new residents of their houses. The purpose of this study is to clarify the number of elderly single and couple households who live in big detached houses located in suburban areas and the features of suburban municipalities that the percentage of those households are high. At first, we analyzed the number of elderly single and couple households who live in big detached house. The analysis revealed that about 3.7 million elderly single and couple households live in residences which are over 100 and about 42% of those households live in suburban areas. Then, we analyzed the features of the suburban municipalities where there is high percentage of those households by doing factor analysis. The result of analysis shows that about 38% of these municipalities are located in suburban areas and they are affected by two factors. One factor is the degree of urbanization. The other is population density of factory workers. Finally, we categorize municipalities where there is a high percentage of those households. As a result of cluster analysis, these municipalities can be classified into five types using the following parameters: households, residences, economic levels and industry. Type is the area where progress in urbanization and percentage of factory workers are low. Municipalities of type are located in the suburbs of metropolitan area Type is the area where progress in urbanization and percentage of factory workers are high. Municipalities of type are also located in the suburbs of metropolitan area. But they are far from the center of the metropolitan area than those of type. Type is the area where is not affected by two factors. Municipalities of type are far from the center of the metropolitan area than those of type. Type is the area that urbanization is not progressing and percentage of factory workers are high. Municipalities of type are far from the center of the metropolitan area than type. Type is the area where urbanization is not progressing and percentage of factory workers are low. Half of type is located in the suburbs of metropolitan area. The other half is far from the center of the metropolitan area than those of type. (2016 年 12 月 28 日原稿受理,2017 年 7 月 20 日採用決定 ) 2925

カテゴリー Ⅰ 日本建築学会計画系論文集第 81 巻第 728 号, ,2016 年 10 月 J. Archit. Plann., AIJ, Vol. 81 No. 728, , Oct., 2016 DOI

カテゴリー Ⅰ 日本建築学会計画系論文集第 81 巻第 728 号,2247-2257,2016 年 10 月 J. Archit. Plann., AIJ, Vol. 81 No. 728, 2247-2257, Oct., 2016 DOI http://doi.org/10.3130/aija.81.2247 一次通勤圏で高齢単身夫婦世帯の持ち家の賃貸活用が進む可能性に関する分析 ANALYSIS