Basic definition of area:

Area is a quantity indicating the degree of a two-dimensional figure or shape or plane layer in a plane. A surface region is a simulation on a two-dimensional surface of a three-dimensional object. Area can be understood as the amount of material with a given thickness, which is necessary to form a model of shape, or the amount of paint required to cover a surface with a single coating.

It is a two-dimensional simulation of curve length (one-dimensional concept) or solid volume (three-dimensional concept). The area of a shape can be measured by comparing a fixed size shape with a square. In the International System of Units (SI), the standard unit area is square meters. A square area with an area of one meter and an area of three square meters will have the same shape as three such squares.

In mathematics, the unit square is defined as 1, and the area of any other shape or surface is a dimensionless real number. There are several well-known formulas for simple shapes, such as triangle, rectangle and circle.

Building area:

Living quarters:

The living area of a house refers to the sum of the net living area of the rooms directly facing the residents in each floor plane of a residential building. The so-called net area is the horizontal area occupied by building components such as walls and columns.

Indoor area and usable area:

Interior building area and usable area are not the same concept. Interior construction area includes usable area and interior wall area. You can measure the actual use area of the house yourself, which is also commonly known as the carpet area.

Use area:

The usable floor area of a house refers to the sum of the net construction area directly used by residents in each floor plan of the house. Calculating the usable floor area of a house can directly reflect the usage of the house, but it is generally not necessary to use the usable floor area to calculate the price in the sale of the house.

There are some special regulations when calculating the usable area: the indoor stairs of duplex apartments are included in the usable area according to the total area of natural floors; Chimneys, ventilation pipes and pipe wells that are not included in the structural area are included in the use area; Interior wall decoration thickness is included in the usable area.

Building area:

The building area of a house refers to the horizontal area of the space surrounded by the external wall of a building. If the construction area of multi-storey and high-rise residential buildings is calculated, it is the sum of the construction areas of each floor.