Survey Method
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National Government and its organizations (including, for example, Japan Housing Finance Agency, public corporations, enterprise corporations, and the like.)
Tokyo Metropolitan Government, Hokkaido Government, and prefectural governments and their organizations (including Educational Committees, Housing Supply Corporations, and the like.)
Local governments and their organizations (including local government cooperatives, Educational Committees, Housing Supply Corporations, and the like).
Corporations established under Commercial Law (for example, unlimited partnerships, limited partnerships, and stock companies.). Corporations established under Limited Liability Company Law.
Legal persons that are not corporations (for example, Forestry Cooperatives, Flood Prevention Cooperatives, etc.) and organizations that are not legal persons (for example, Japan Management Federation, School Support Association, Crime Prevention Association, and other organizations that are not established under the law).
Individuals and owners of proprietorships
Construction of a new building on a piece of land where there is no existing building.
On the premise where there is an existing building, an addition causes an increase in the total amount of floor space.
In a renovation, a part or all of the existing building is removed, and construction is carried out to construct a building that is not markedly different from the existing building in terms of use, scale, and structure. A renovation takes place when part or all of the existing building is removed or destroyed by natural disaster and the like. When a revised building is markedly different from the existing building, then that delineates the case of a new construction or addition.
The main structure (which, hereafter, will be as defined in Item 5, Article 2, Building Standard Law) is wooden (including wooden structure with cement rending and timber flamed structure with clay finishing).
The main structure is unification of a steel-frame and reinforced concrete.
The main structure is unification of steel reinforcement within a mold and concrete poured into the mold.
The main structure is steel-frame or other metal frame. (This category includes those added with steel-frame or those with lightweight steel-frame)
The main structure is concrete block with steel reinforcement. (This category includes out-wall block structures.)
The main structures that do not fall into any of the above structure such as masonry, brick, plain concrete, plain concrete block, and so on.
In new dwelling construction, new dwelling (including those rebuilt on new premises or new sections of a dwelling) is built by new construction, addition or renovation.
These are cases when a new section of a dwelling is not built by addition or renovation.
This is housing built with use of only private sector funding and excludes public housing, Japan Housing Finance Agency, Urban Renaissance Agency, Employee Pension Fund, Public Servant Housing, and Housing Supply Corporation housing.
Housing built with assistance of the National Government based on the Public-Operated Housing Act or Residental Area Improvement Act. (Including those housing units built with assistance from the National and prefectural governments).
Housing built with loans from Japan Housing Finance Agency (regardless of the amount of the loan and including housing only partially financed by the Corporation).
Housing by Urban Renaissance Agency for concession or renting.
Housing built with loans from prefectural governments as return loans for the employee's pension, excluding those in the private sector, public housing, Japan Housing Finance Agency, and Urban Renaissance Agency. Also, housing built with assistance or loans from the National Government, prefectural governments or local governments. Also, housing built by the National Government for its employees and by prefectural governments and local governments for their employees. Also, housing built by National Government related organizations (for example, East Nippon Expressway Co. Ltd., Japan Water Agency, and the like) for their employees.
Methods other than prefabricated construction and wood frame construction.
In prefabricated construction, member of principlestructual parts of the housing structure such as walls, pillars, floors, beams, roofs, stairs and the like are mass produced using machinery. At the housing construction site, these are assembled.
The two-by-four construction is what is referred to by the wood frame construction.
The subject of building construction constructs the house for his/her own residence.
The subject of building construction is the development of rental housing.
Employers (corporations, governments, schools, etc.) build tied house to house employees (employees, personnel, teachers, etc.).
Housing that is built for the purpose of concession.
Housing that is built solely for residential purposes, with no portion of the housing used for business purposes such as stores, offices, and work rooms.
Housing that is built for the purpose of combined purposes, with portion of the housing to be used for business purposes such as stores, offices, and work rooms. This type of housing has more than 20 percent of the total floor space used as a residence.
This is the type of housing that is attached to other buildings, such as factories, schools, official buildings, hotels, lodging, bath houses, temples and shrines, and the like. The building and housing are combined (one building or combined).
One building houses one residence.
In a tenement house, two or more housing units are built into one building. The housing units have common walls and they have individual entrances. The "terrace house" is a kind of a tenement house.
In an apartment house, there are two or more housing units that share all or part of a hall, hallway, stairs, and so on.
Survey Method
(All samples are the type of survey for both of these statistics.) Buildings Loss Statistics Survey:
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This is the case where the major structure of the building deteriorates to the extreme point that it lacks structural endurance, and the building is disposed of.
This is for cases other than the cases of "Hazard due to deterioration." For example, cases where a building is removed for increasing road width or land readjustment.
The buildings whose main structure is wooden (including wooden structure with cement rendering and timber framed structure with clay finishing).
The buildings whose main structure is other than wooden such as: steel-frame reinforced concrete, reinforced concrete, steel frame, concrete block, masonry, brick, plain concrete, plain concrete block, and so on.
Total loss by fire, strong winds, and floods which is hard to restore. (Ratio of loss (%)): 100 - 50% on the main structure.
Partial loss by fire, strong winds, and floods or severe damage which can restored by major repair. (Ratio of loss (%)): 50 - 20% on the main structure.