The amount of the final house purchase price will not be affected for the time being.
that enclose the physical enclosed building space.
First Finance and Economics looked up the website of the Ministry of Housing and Urban-Rural Development and found the announcement of the Code for the Calculation of Building Area of Building Engineering issued by the Ministry of Housing and Urban-Rural Development in December 2013.
However, luxury residential products generally use curtain walls, such as dry-hanging stone, so the horizontal projected area of the exterior wall will be much more.” An engineer from a real estate enterprise in East China told reporters.
In the face of complex terminology changes, the majority of house buyers are more concerned about whether the shared area will increase when they buy the house, whether they need to spend more money, and whether the property right area on the house property certificate will change.
If there are 1000 households, then each household will increase by 0.5 square meters.
need to be included in the building area.
Since March 1, the mandatory document “General Code for Civil Buildings” issued by the Ministry of Housing and Urban-Rural Development has been officially implemented.
Through comparison, it can be seen that the old code does not completely calculate the horizontal projected area of the external wall, but only calculates the sum of the horizontal areas of the external wall structure, including the thermal insulation layer, and does not include the wall plastering, decorative surface, and decorative curtain wall.
Assuming that the building is a luxury residential area, the average area of each household is large, and there are 500 households in total, then each household is estimated to be 6 square meters more.
“The new specification mainly increases the horizontal projected area of the outermost layer of the exterior wall.
It is a mandatory engineering construction code, and all provisions must be strictly implemented.
A rigid residential area with a total building area of 100000 square meters will increase the building area by about 500 square meters.
If the outer facade of the curtain wall is about 200 mm thick, it is also a 100000 square meter residential area, and the building area is increased by about 3000 square meters.
Among them, the provisions on the inclusion of the exterior wall surface into the building area have caused heated public opinion.
In addition, the 2013 edition of the Code for the Calculation of Building Area of Building Engineering also clearly points out that the building area should not be calculated for some projects, including plinths, wall-attached columns, piers, steps, wall plastering, decorative surfaces, inlaid block material surface courses, decorative curtain walls, etc.
So what is the biggest difference between the new specification and the old one? First of all, the article 3.1.1 has aroused great concern, which said: “The building area should be calculated according to the horizontal projected area of the space enclosed by the outer surface of the outer enclosure at each natural floor (ground) of the building.” When analyzing this article, some people said that the horizontal projected area of the outer wall was not included in the building area before, but will be included later, which will greatly increase the shared area.
According to the terminology of the website of the Ministry of Housing and Urban-Rural Development, the enclosure structure refers to the walls (columns), doors, windows, curtain walls, etc.
In addition to the General Code for the Calculation of Building Area of Building Engineering, which has been officially implemented recently, the Ministry of Housing and Urban-Rural Development also publicly solicited comments on the new Standard for the Calculation of Building Area of Building Engineering (Draft for Comments) in November last year, which revised the 2013 version of the Code for the Calculation of Building Area of Building Engineering, in which the expression of the calculation of building area is consistent with the latest General Code for Civil Buildings, That is, “the building area of the building works shall be calculated according to the sum of the horizontal areas of the outer surface of the enclosure structure on the natural floor or the ground”.
According to the calculation of the architectural design practitioners, generally speaking, the thickness of the real stone paint wall is 18-20 mm.
At the same time, the mandatory provisions in the old code, such as the Unified Standard for the Design of Civil Buildings, which are inconsistent with the new code, shall be abolished accordingly.
Now the buyers are quite clear that the materials of the exterior wall include real stone paint, dry-hanging stone, dry-hanging aluminum plate, etc.
As early as last August, the Ministry of Housing and Urban-Rural Development of the People’s Republic of China issued the announcement of the national standard General Code for Civil Buildings (hereinafter referred to as “the new code”) with the number of GB55031-2022.
Before the new code was issued, this was the national standard for the calculation of building area, which said that the building area of the building should be calculated by the sum of the horizontal areas of the outer wall structure of the natural floor; The external thermal insulation layer of the external wall of the building shall be calculated according to the horizontal sectional area of its thermal insulation material and included in the building area of the natural floor; For buildings with curtain wall as the maintenance structure, the building area shall be calculated according to the outer boundary of curtain wall.
In the new code, the horizontal projected area of the space enclosed by the outer surface of the outer envelope is calculated.
If the relevant provisions in the current engineering construction standard are inconsistent with the new code, the provisions of the new code shall prevail.
It can be seen that the Ministry of Housing and Urban-Rural Development has uniformly stated in two new regulations, and uniformly launched the new building area calculation specification.
According to the Ministry of Housing and Urban-Rural Development, the code has been implemented since March 1, 2023.
One stone stirs up a thousand waves.
The views of “the area of the public share has increased since March 1” and “the external wall also counts as the building area” are common on the Internet recently, and have poked the “pain point of the public share” of the majority of home buyers, but what is the truth? There are differences between the new and old building area calculation codes.
This means that the horizontal projected area of external wall plastering, decorative surface, decorative curtain wall, etc.
In a word, Tesla, this A-share will flash! The latest response comes from the author | Ma Yifan of the First Finance and Economics Department.
In fact, the General Code for Civil Buildings issued by the Ministry of Housing and Urban-Rural Development is mainly aimed at the standardization of architectural design and engineering, while the area on the property certificate of the buyer and the actual cost of buying the house are mainly based on the surveying and mapping report issued by the real estate surveying and mapping department.
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Generally speaking, the buildings just need to use more paint, such as real stone paint, which is thinner, so the impact of the new specification is very small.
