１．Overview of the system and benefits of certification

　About "long-term excellent house" which is excellent house where measures to use in good condition for a long time were taken, plan about the construction and maintenance conservation (we call "plan such as "long-term excellent house construction"). The "Law Concerning the Promotion of Long-Term Excellent Houses" was promulgated in December 2008, and came into effect on June 4, 2009.

　Under this law, in order to promote the spread of long-term excellent housing, it has measures to prevent structural deterioration, earthquake resistance, ease of maintenance and renewal, variability, barrier-free properties, and energy-saving performance. We devise living environment in consideration of formation of scenery and construction plan of house having constant dwelling unit area and constant maintenance conservation plan and apply to jurisdiction administrative agency.

　About house which received authorization of the plan concerned, we will perform construction and maintenance based on plan such as authorized long-term excellent house construction.

　In addition, please confirm as you devised summary when Motoichi performed authorization. (Revised on October 1, 2022)

Summary (PDF: 252KB) about Yokohama-shi "law about promotion of long-term excellent house" (PDF: 252KB)

• Tax incentives are applied (home loan tax reduction, property tax reduction)
• Proper maintenance conservation improves the asset value of housing
• Reduce environmental impact due to the reduction of industrial waste due to the rebuilding of houses

　　→Please see below for tax incentives and required documents.
　　　
　　　[General tax subject to special provisions] "Special provisions for tax on long-term excellent housing" (outside site) (Ministry of Land, Infrastructure, Transport and Tourism)
　　　[Reduction of property tax] “City Tax Page” (Yokohama City Finance Bureau Main Tax Department)
　　　[About newly built residential house certification] "About new house certification" (City of Yokohama, Housing and Architecture Bureau Information Consultation Section)
　　　[Tax Consultation Corner on National Tax] "National Tax Agency Tax Answer" (outside site) (National Tax Agency)
　　　[How to find out your local tax office] “Location and Information on Tax Offices in Kanagawa Prefecture” (external site) (National Tax Agency)
　
※Please refer to each ward office Tax Division house charge about reduction of property tax, city planning tax.

Building Environment Section, Building Planning Division, Housing and Architecture Bureau
Location: 10 25th floor, 6-50 Honcho, Naka-ku, Yokohama

Phone number: 045-671-4526 (08:45~12:00, 13:00~17:15)
※Please refer to the contents of frequently asked questions in the Q & A.

FAX number: 045-550-3513
Email address:　kc-chouki@city.yokohama.jp