What is the floor area and what does the floor area include

Floor area refers to the sum of the horizontal area of each floor of a building, including usable area, auxiliary area and structural area.

The construction area is an economic indicator that indicates the size of the building, and it is also a physical quantity index that reflects the scale of building construction in square meters.

Article 8 of the Ministry of Construction on the issuance of the Rules for the Calculation of the Sales Area of Commercial Housing and the Apportionment of the Common Building Area The public construction area is composed of the following two parts: 1. The elevator shaft, stairwell, garbage channel, substation room, equipment room, public foyer and aisle, basement, guard room on duty and other public buildings and management buildings that serve the whole building functionally; 2. Half of the horizontal projection area of the partition wall between the set (unit) and the common building space and the external wall (including the gable). It does not include the floor area of basement carports and civil air defense works sold or rented as independent use space.

The floor area isRefers to the sum of the horizontal area of each floor of a building

This includes usable area, auxiliary area, and structural area. The usable area refers to the net area directly used for production and living in the floor plan of each floor of the building. Ancillary area refers to the net area occupied by the floor plan of each floor of the building for auxiliary production or assisted living, such as the area occupied by stairs, walkways, toilets, and kitchens in residential buildings.

The sum of the usable area and the auxiliary area is called the "effective area". Structural area refers to the area occupied by walls, columns and other structures in the plane of each floor of the building.

The construction area, also known as the construction area, is a professional term in the construction industry, which is directly related to the calculation of the usable area and the utility rate. It refers to the sum of the plane area of each floor measured above the outer horizontal plane of the external wall of the residential building, which is an economic index indicating the scale of the building and a physical quantity index that reflects the scale of the building construction in square meters. The floor area of each floor is calculated according to the horizontal section of the external wall enclosure above the foot of the building, which includes three items, namely the usable area, the auxiliary area and the structural area.

In Chinese mainland, the regulations relating to floor area include the Rules for the Calculation of the Area Sold of Commercial Housing and the Apportionment of Common Area and the current Rules for the Calculation of the Area of Floor Area. In Hong Kong, China, the calculation of gross floor area and usable area is subject to the Code of Practice on Measurement issued by the Hong Kong Institute of Surveyors. In Taiwan, there are technical building regulations, and Chapter 9 of the building regulations are about the floor area ratio and floor area regulations.

As a technical and economic index, the construction area is used in various fields of construction projects, and it is also one of the important indicators of national macroeconomic control. The construction area refers to the physical quantitative index of the horizontal area of the periphery of the building structure calculated in square meters, which is a technical parameter that reflects the scale of the building, and it is a basic indicator in the real estate market, becoming the core data that developers and buyers are most concerned about.

The ranges that do not calculate the floor area are:

1. Component accessories, art decoration and hanging (wall) boards that highlight the wall, such as: columns, buttresses, legs, etc.

2. Outdoor ladders for maintenance, fire fighting, etc., steel ladders with a width of less than 60 cm.

3. Chimneys, flues, storage tanks and other structures that are independent and not attached to the exterior wall.

4. There is no roof water tank room with enclosure structure.

5. The technical layer (equipment layer) with a floor height within meters.

6. Single-storey rooms such as separate operation rooms, control rooms, and instrument rooms in single-storey residences.

7. The floor height is less than one meter of deep foundation underground overhead layer, and the sloping building tripod space.

The building area consists of two parts: one is the building area of the suite, and the other is the shared common building area. Its calculation formula is: building area in the suite + apportioned common building area.

The floor area formed by the building includes outdoor balconies, awnings, eaves corridors, outdoor corridors, basements, outdoor stairs, etc., which are attached to the building, and have a permanent building with a cover, a firm structure, and a floor height and above. The construction area of the suite refers to the total construction area of each part of the commercial housing suite, which is mainly composed of three parts: the usable area of the suite, the wall area of the suite and the construction area of the balcony. Usable area in the suite:

The sum of the area in the bedroom, living room, dining room, hallway, kitchen, bathroom, false floor, toilet, storage room, wall cabinet, etc.; Indoor stairs in duplex dwellings shall be included in the usable area according to the sum of the area of the natural floors; Chimneys, ventilation ducts, and pipe shafts that are not included in the structure are included in the usable area. Interior wall area: The partition wall between the units of the new dwelling, the partition wall between the unit and the common building space, and the external wall (including the gable) are all common walls.

Half of the horizontal scattered old projection area of the shared wall shall be included in the area of the wall in the suite; The horizontal projection area of the non-common wall is all included in the area of the wall in the suite; The thickness of the interior wall decoration is included in the area of most of the interior walls.

When buying a house in a community, you need to make a simple understanding of its construction area and shared area, so as to judge whether it is Pi Feng who can bring you a more comfortable home life. So what is the construction area of the building, and how much is the shared area of the community, do you understand? Now let's take a look.

1. What is included in the construction area of the building?

The construction area is mainly composed of two categories: indoor usable area, such as the area of living room, balcony, kitchen, bedroom, bathroom and other areas; The shared area is the area shared by the owners of the whole community, such as the canopy, the corridor outside the door, the green space, the staircase, the entertainment facility area, etc.

Second, it is more appropriate to increase the product resistance of the community public floor area.

1. The shared area of each building is different, mainly because the ratio of the shared area is different. The common area coefficient is a value obtained by dividing the common floor area of a building by the total area of the building, and the higher this value, the higher the living comfort, and vice versa, the lower the living comfort.

2. In a high-rise building, its housing rate is basically about 75%, that is, the shared area accounts for 20% of the entire community. In other words, if you buy a 200-square-meter house, you can actually use only 150 square meters, and the buyer needs to pay this part of the money for the shared area.

3. The size of the shared area of a building has a great impact on the residents of the community. If the shared area is relatively small, then when individuals go home, the corridor will become crowded and their daily life will be seriously affected. Of course, it is not possible to have a large pooled area, which means that the area for personal use will be reduced too much.

Regarding the construction area of the building, and how much is the shared area of the community, I will introduce it here, do you understand? To buy commercial housing, you need to have a certain understanding of the construction area, usable area, and shared area to ensure that it is more comfortable to use in the later stage.