You need to know when buying a house: in China, the life span of a house may be only half of the property right.

A statistic shows that the service life of houses in China is shorter than that of buildings, especially in Beijing. Less than 30 years on average, only half of the design life (50 to 70 years). In most cases, the service life of residential buildings in China is not poor in quality, but has to be retired early for various reasons. The service life of rural housing is less than that of land. What is the significance of 70-year residential property rights in China?

Poor performance is the internal cause of the short life cycle of houses in China, including small area and difficult decoration.

The length of residence refers to the number of years that a house can maintain normal use under tangible wear and tear, and it is a natural life determined by the structure and quality of the house. The depreciation life of a house refers to the period when the value of the house is transferred, and it is the socially necessary average service life determined by social and economic conditions in the process of use, also called economic life. The useful life of a house is generally longer than the depreciation life. The depreciation period of different building structures is stipulated by the state: 60 years for reinforced concrete structures; Brick-concrete structure is 50 years.

Comparing the average life span of buildings in China for 30 years, the average life span of buildings in developed countries such as Britain has reached 1.32 years, while that in the United States has reached 74 years.

In fact, "the average life span of new houses in China is only 30 years" was put forward as early as the "Seventh National Symposium on Building Renovation" held in 2006. However, according to China's General Principles for Design of Civil Buildings, the durability of the main structure of important buildings and high-rise buildings is 100 years, and that of ordinary buildings is 50 ~ 100 years.

Why "short-lived"?

Chen Yiming, director of the Department of Building Energy Conservation and Science and Technology of the Ministry of Housing and Urban-Rural Development, said that the quality problems of the building itself and the blind demolition by the government are the important reasons for the short life of the building.

Reason 1: poor quality case: Shanghai "building fell down"

Design defects make some buildings "premature aging" and unsustainable. In order to minimize the cost, some developers often sacrifice some functions of the building, especially the "advanced" functions. In 2009, the building quality problems such as "the building fell down" and "the building was brittle" sounded the alarm for the government.

In June, 2009, a 13-storey commercial building under construction by the Lotus River in Minhang District, Shanghai, was called "the building collapsed" by netizens because of the poor foundation pressure due to the wrong construction procedure, and the whole building collapsed, resulting in the death of a worker. In July 2009, the "Zhongxing Building" under construction near the entrance of Huashen Avenue in the south of Nanjing collapsed near the road and was called "fragile building" by netizens.

Reason 2: Demolition case: Demolition and reconstruction of Nanchang four-star hotel.

Nanchang 1999 built a four-star five-lake hotel [-0. 17%], which was demolished by blasting on February 6 this year, and a five-star hotel was to be rebuilt on the original site. A modern primary school in Taijiang District, Fuzhou City, which has just been built with an investment of150,000 yuan, will be demolished soon due to the re-planning of the central business district. ...

Wei Wu, a professor at the School of Architecture and Urban Planning, said that the planning is backward and chaotic, which is not in harmony with the pace of future urban development. No matter how excellent the quality of the building is, it is also doomed to "early death." In some places, there is even a strange phenomenon that "planning changes with leaders". Leaders have to adjust their plans every once in a while, so some "young" buildings are demolished from time to time.

"Short life" is harmful

The prevalence of "short-lived disease" in architecture not only causes economic burden, waste of resources and environmental pressure, but also causes some ownership disputes.

Hazard 1: it costs a lot.

Gu Haibo, a senior economist in Shanghai, once calculated a waste account of "short-lived buildings": in 2005, the national urban residential construction area reached 9.958 billion square meters, calculated according to the average construction and installation cost per square meter 1 10,000 yuan. If its service life is increased from an average of 30 years to 50 years, it can save 6.67 trillion yuan and build 6.67 million Hope primary schools with 1 10,000 yuan.

Hazard 2: pollute the environment

A large number of buildings that are still in service life are demolished, which will also cause resource consumption and increase environmental load due to a large amount of dust and waste. Chen Zhaoyuan, a famous civil engineering expert and academician of China Academy of Engineering, said with concern: "The consequences of short-lived buildings are quite serious, which not only causes great waste of social resources, but also poses a threat to human living environment. If no measures are taken, the projects completed today will be rebuilt or demolished and rebuilt in 20 years, 30 years or even less, and we will fall into an endless cycle of large-scale construction, overhaul, demolition and reconstruction.

Hazard 3: Social problems

At present, the property right of commercial housing is 70 years, which is 40 years longer than its average service life cycle. The disjointed phenomenon of "having the property right certificate but dying the property" caused by the "short life" of buildings will lead to a series of social problems.

(The above answers were published on 20 15-08-07. Please refer to the actual situation for the current purchase policy. )

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