Proportion of floor area and usable area in the suite

This ratio is not fixed, and the usable area refers to the sum of the net area directly used by the residents in the floor plan of each floor of the dwelling. The sum of the usable area and the wall area (including the indoor wall and the outer wall enclosing the household) is called the area in the suite, and the area in the suite is the smallest unit of the house when participating in the apportionment of the building, and the sum of the area in the suite and the apportioned area after apportionment is the construction area. The apportioned area is now allocated in proportion to the area in your suite and the area in other people's suites, and the apportionment coefficient of each building (the proportion you say) is different depending on the specific situation.

The usable area can be understood literally as the area actually used by the householder. The professional term refers to the sum of the net area directly used for production or living in the plane of each floor of the building, and the construction area is greater than the usable area, which is the area occupied by the wall on the basis of the usable area. In technical terms, it refers to the sum of the plane area of each floor measured above the outer horizontal plane of the outer wall of a residential building.

The construction area is equal to the construction area in the suite + the shared area. The shared area is equal to the construction area of the shared factor. The pooling factor is equal to the total pooled area of the building and the total floor area of the building.

It is one thing to clarify the formula for calculating the floor area of the house, but the developer usually marks the floor area and the area of the suite on the floor plan, so it is more important for buyers to understand the difference between the floor area of the house and the area of the suite, so as not to overpay the house and not enjoy the space it deserves.

The area of the suite, the full name of the floor area of the suite. According to the real estate surveying specifications and the detailed rules of surveying and mapping of various provinces, the area in the suite = the usable area in the suite + the area of the wall in the suite + the balcony area.

The usable area of the suite is simply the total area of bricks after the floor of the whole house is completely paved with bricks.

The wall area of the suite is the partition wall area of each room in the suite + the half-wall area of the inner side of the axis of the whole house, and the balcony area (including the so-called entrance garden, sky garden, etc.) is difficult to say.

There are several common situations:

1. For unenclosed balconies, half of the horizontal projection area of the upper cover in the enclosure structure shall be calculated. If the horizontal projection area of the upper cover is less than one-half of the area in the enclosure structure, the balcony area shall not be calculated. If the top cover spans more than one natural floor, the balcony area is not counted (meaning that the lid of your balcony is located on the upper floor floor of your house).

2. The area of the closed balcony is fully calculated. Closure refers to the use of permanent materials approved by the planning department to completely separate the interior and exterior spaces. The usable area in the suite refers to the actual usable area of the room, excluding the structural area such as walls and columns.

The calculation of the usable area shall comply with the following provisions:

1. The indoor usable area is calculated according to the size of the inner surface of the structural wall, and the wall has a composite thermal insulation and thermal insulation layer, which is calculated according to the size of the inner skin of the composite layer;

2. Chimneys, ventilation ducts, various pipeline shafts, etc. are not included in the usable area.

3. Non-public stairs (including stairs in the suite in duplex dwellings) shall be included in the usable area according to the sum of the usable area of the natural floors;

4. The usable area of the residence includes bedrooms, living rooms (halls), kitchens, toilets, dining rooms, halls, corridors, front rooms, storage rooms, wall cabinets, etc.;

5. Usable area coefficient in the suite: When the area of the house is calculated according to the set (unit), the usable area coefficient is the ratio (%) of the usable area in the suite and the building area in the suite plus the common building area that should be apportioned according to the regulations

The usable area in the suite is equal to the construction area in the suite minus the projection area of the wall, which is the actual usable area.

The usable area in the suite is less than the floor area in the suite, and the floor area in the suite is less than the floor area.

Introduction to the floor area and the area of the suite:

1. Construction area.

The construction area refers to the sum of the horizontal projection area of the periphery of each floor above the foot of the external wall of the building, including balconies, corridors, basements, outdoor stairs, etc. Construction area Floor area in the suite Shared area. To put it simply, the floor area is the area that the sale says when you buy a house, and the area that is finally presented on the house book.

2. The area in the suite.

The floor area of the suite refers to the sum of the floor area of each part of the commercial house. The construction area in the suite The usable area in the suite The apportioned area in the suite, wherein the apportioned area in the suite includes the wall area and balcony area apportioned in the suite. The usable area in the set refers to the area that can actually be used by yourself, and in layman's terms, it is the carpet area, that is, the area that can be laid with carpet is the area that you can actually use.

The difference between the floor area and the area in the suite:

1. The size is different.

The area inside the set is larger than the usable area, and the usable area is relatively small.

2. Contains differences.

The built-up area of the suite includes the usable area, the interior wall area, half of the area of the exterior wall and half of the area of the sub-household wall. The usable area is the area of the suite that can be used for real use, and does not include the area occupied by the interior wall, exterior wall, etc.

3. The calculation formula is different.

Floor area Floor area in the suite apportioned area. The area in the suite, the usable area, the wall area, the balcony area.

4. Different definitions.

The floor area is a generalized and general term for all the floor areas calculated with the outer skin of the wall as the edge. The area of the suite refers to the usable area of a building (excluding walls and pools).

5. The calculation of the public share is different.

The area of the suite is not calculated as a share, and the floor area is calculated as a share.

The relationship between the construction area and the area in the suite: construction area = area in the suite + shared area.

The area inside the suite is a concept used in the calculation of the area of the house, which refers to the area within the central axis of the wall of the house excluding the common areas. The house drawings in the real estate certificate we got are drawn with the area of the wall axis of the building, which is equivalent to the area of the suite. The size of the floor area is affected by two factors: the area inside the suite and the shared area.

Therefore, it cannot be absolutely said that a house with a large construction area must have a large area in the suite.

The construction area refers to the sum of the horizontal projection area of the periphery of each floor above the foot of the external wall (column) of the building, including balconies, basements, outdoor stairs, etc. To put it simply, the floor area is the area that you say when you buy a house, and then the area that is presented on the house.

The role of floor area

1. Determine the important indicators of the scale of construction.

The construction area approved according to the project approval document is an important control index for the preliminary design. For national investment projects, the construction area of the construction drawings shall not exceed 5% of the preliminary design, otherwise it must be re-submitted for approval.

2. Determine the basis of various technical and economic indicators.

There is a certain proportional relationship between the construction area and the usable area, auxiliary area and structural liquid area. When designing buildings or structures, designers calculate technical and economic indicators such as structural area and effective area on the basis of calculating the construction area.

3. The basis of the design scheme.

In architectural design and construction planning, the floor area is often used to control certain indicators, such as floor area ratio, building density, building coefficient, etc. When evaluating the design scheme, the living area coefficient, land use coefficient, effective area coefficient, unilateral cost and other indicators are usually used, which are closely related to the construction area of the hand-buried servants. Therefore, in order to evaluate the design scheme, it is necessary to accurately calculate the floor area.

Do you know how big your house is? Afraid of being stolen by developers? Then measure the construction area and usable area of the suite before buying a house, and be a smart buyer.

Do you know how big your house is? Afraid of being stolen by developers? Then measure the building area and usable area of the suite before buying a house, and be a shrewd buyer.

Definition of the usable area within the suite

The usable area of the suite, there is a figurative saying called "carpet area", simply put, it is to spread the whole area of your home with carpet, how much area of carpet can be laid, is how much usable area in the suite.

The usable area of the house in the suite is the area of the usable space of the house in the suite, which is calculated according to the following provisions:

1) The usable area of the suite is the sum of the bedroom, living room, tunnel, kitchen, bathroom, storage room, wall cabinet and other space areas in the suite;

2) The staircase in the suite is included in the usable area according to the sum of the area of the natural floor;

3) Chimneys, ventilation ducts, and pipe wells that are not included in the structural area are included in the usable area;

4) The thickness of the inner wall decoration is included in the usable area.

Definition of the floor area of the suite

The built-up area of a commercial house refers to the sum of the usable area, the built-up wall area and the balcony floor area of a complete set of commercial buildings (units).

The construction area in the suite is not equal to the carpet area, which is completely private owned by the buyer; Compared with the usable area in the suite, it can more completely reflect the property rights of the buyer's personal private part.

Formula for calculating the floor area in the suite

The construction area in the suite = the area of Wang Sansheng used in the suite + the area of the wall in the suite + the construction area of the balcony.

Definition of built-up area of interior walls and balconies.

The area of the wall inside the set.

The area of the internal wall of the suite includes three parts: the partition wall inside the house (calculated according to the projection area), the partition wall between the two households (calculated according to half of the projection area), and the external wall (calculated according to half of the projection area).

balcony floor area.

Enclosed balconies are calculated according to the full area, and unenclosed balconies are calculated according to half of the area.

The house is so expensive, and when buying a house, it is not a big loss for buyers to encounter a shrinkage in area, so when buying a house, you must first figure out the terms you don't understand such as construction area, usable area, and building area in the suite.

1. The area is different.

The floor area of the suite refers to the area of the usable space of the house in the suite, and the usable area of the suite refers to the area that can actually be used indoors.

2. The composition is different.

The construction area of the suite is composed of three parts: the usable area of the house in the suite, the wall area of the suite, and the construction area of the balcony in the suite.

The usable area of the suite does not include the structural area such as walls and columns. Non-public staircases (including in-suite staircases in duplex dwellings) are included in the usable area according to the sum of the usable area of the natural floors; The usable area of the residence includes bedrooms, living rooms (halls), kitchens, bathrooms, dining rooms, hallways, corridors, front rooms, storage rooms, wall cabinets, etc.

3. The area calculation is different.

The floor area of the suite is calculated based on the horizontal projection area. The construction area in the suite = the usable area in the suite + the wall area in the suite + the balcony construction area. The floor area of the balcony in the suite (GB T50353-2013) is calculated according to the horizontal projection area between the balcony perimeter and the exterior wall of the house1 2.

The usable area of the suite includes the total usable area of bedroom, living room (hall), dining room, kitchen, bathroom, hallway, aisle, storage room, wall cabinet, etc.

Usable Area and Floor Area Conversion: Floor Area Usable Area.

The usable area of a dwelling includes the sum of the net area within the dwelling. If it is a sloping roof, half of the indoor area must be above the net height, and the rest of the area must be within the positive and negative difference, then it can be called the usable area, and the part of the balcony area with more than 6 is counted as the usable area according to the proportion of half.

Buying a house process:

1. Evaluate the ability to buy a house: Many cities have issued some policies on buying a house, but there are still different policies for buying a house in various cities, so buyers should consider their own qualifications and estimate their economic strength before buying a house, so as to determine which areas they can buy a house.

2. Understand real estate knowledge: Everyone must be very afraid of being deceived by the salesperson when buying a house, so in order to avoid being deceived by others, everyone should learn more about buying a house when buying a house.

When understanding the knowledge of buying a house, buyers can understand the property rights, greening, area, and floor area ratio of the house in a targeted manner, and understand the necessary real estate knowledge can effectively help buyers understand the real situation of the house and the community.