How to calculate floor area
In the field of real estate, architectural design and decoration, accurate calculation of floor area is a crucial link. Whether you're buying, renting, or renovating, knowing how to calculate floor space can help you make smarter decisions. This article will introduce the calculation method of floor area in detail, and provide you with comprehensive guidance based on hot topics and hot content in the past 10 days.
1. Basic concepts of floor area

Floor area is generally divided into the following types:
| area type | definition | Applicable scenarios |
|---|---|---|
| Building area | Including the area of walls, columns and other structures | Real estate transactions, property rights registration |
| Inner area | Actual usable living area | Decoration design, furniture placement |
| Pool area | Area of public areas (e.g. elevators, corridors) | Property management fee calculation |
2. Calculation method of floor area
1.Calculation of building area
Building area refers to the sum of the horizontal areas of all floors of a building, including the area of walls, columns and other structures. The calculation formula is as follows:
Building area = apartment area + common area
2.Calculation of inner area
The area within the suite refers to the actual usable living area, excluding the area of walls, columns and other structures. The calculation formula is as follows:
Inside area = usable area + wall area
3.Calculation of shared area
The shared area refers to the area of public areas (such as elevators, corridors, stairwells, etc.), which is usually allocated to each household in proportion. The calculation formula is as follows:
Shared area = building area × shared coefficient
3. Hot topics and content in the past 10 days
The following are hot topics and hot content related to floor area in the past 10 days:
| hot topics | Hot content | Related discussions |
|---|---|---|
| Controversy over shared area | Owners in many places have questioned whether the shared area is too large | How to reasonably calculate the shared area |
| Decoration area calculation | Decoration companies often falsely report area | How to avoid the decoration area trap |
| Difference in real estate certificate area | The real estate certificate area does not match the actual area | How to protect rights |
4. How to avoid pitfalls in area calculation
1.Check the house purchase contract carefully
The specific values of the building area, apartment area and shared area should be clearly marked in the house purchase contract to avoid vague concepts for developers.
2.Field measurement
When closing the house, you can ask a professional surveying agency to conduct on-site measurements to ensure that the actual area is consistent with the contract.
3.Understand the sharing coefficient
Different properties have different sharing coefficients, so you should understand it clearly before buying a house to avoid shrinking the actual usable area due to too large a shared area.
5. Summary
Accurately calculating floor area is an important part of the home buying, renting, and renovating process. By understanding the definitions and calculation methods of building area, apartment area and shared area, you can better protect your own rights and interests. At the same time, paying attention to recent hot topics and hot content can also help you avoid common area calculation pitfalls.
I hope this article provides you with valuable reference to help you make more informed decisions during the real estate transaction and renovation process.
check the details
check the details