How to calculate the actual area of a house
When buying or renting a home, calculating the actual area of the home is a key issue. Many consumers have doubts about how to accurately calculate the area of a home, especially when faced with area data provided by developers or landlords. This article will introduce in detail the calculation method of the actual area of a house, and attach structured data to help you better understand.
1. Basic concepts of housing area
Housing area is usually divided intoBuilding areaandInner areaTwo kinds. The construction area includes the area inside the apartment and the shared area, while the area inside the apartment is the space that is actually available for living. The following are the specific differences between the two:
| Type | definition | Contains content |
|---|---|---|
| Building area | Horizontal projected area of the outer wall (column) of the house | Apartment area + common area (such as stairs, elevators, corridors, etc.) |
| Inner area | The actual usable area of the house | Bedroom, living room, kitchen, bathroom, etc. |
2. How to calculate the actual usable area
The actual usable area usually refers to the inner area minus the wall area. The following are the calculation steps:
1.Measure the area inside the sleeve: Use a tape measure to measure the length and width of each room, calculate the area of each room, and then add them up.
2.Deduct wall area: The thickness of the wall is usually 12cm-24cm, and the occupied area needs to be calculated based on the actual thickness.
3.Pay attention to special areas: Whether areas such as balconies and bay windows are included in the area must be confirmed according to local regulations.
| area | Whether to include area | Remarks |
|---|---|---|
| enclosed balcony | full calculation | Regulations are different in some areas |
| Unenclosed balcony | Calculated as 50% | Common standards |
| bay window | Don't count | Height less than 2.2 meters |
3. Calculation method of shared area
Shared area is a common concern among home buyers. The following is a reference for common sharing coefficients:
| Building type | Sharing coefficient range | Description |
|---|---|---|
| Multi-story residential buildings (below 7 floors) | 7%-12% | No elevator, small stall |
| Small high-rise residential buildings (7-11 floors) | 10%-16% | Elevator included |
| High-rise residential buildings (above 12 floors) | 14%-24% | There are many facilities such as elevators and fire escapes |
4. Calculation of actual cases
Suppose you purchase a high-rise residential building and the developer indicates that the building area is 100 square meters:
| Sharing coefficient | 20% |
| Pool area | 100㎡ × 20% = 20㎡ |
| Inner area | 100㎡ - 20㎡ = 80㎡ |
| Wall occupation (based on 10%) | 80㎡ × 10% = 8㎡ |
| actual usable area | 80㎡ - 8㎡ = 72㎡ |
5. Things to note
1.View survey report: Regular developers should provide an actual measured area report issued by the real estate surveying and mapping department.
2.The contract clearly stipulates: The building area, internal area and error handling methods must be specified in the house purchase contract.
3.Be wary of false propaganda: Some developers use "gift area" to attract customers, which may actually be illegal construction.
4.Regional differences: Different cities have special regulations on area calculation. For example, Chongqing has canceled the calculation method of public pool area.
From the above analysis, it can be seen that the calculation of the actual area of a house needs to comprehensively consider a variety of factors. It is recommended that home buyers fully understand relevant information before making a transaction and consult professional institutions when necessary to protect their own rights and interests.
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