How to calculate the total floor area of real estate
In the real estate industry, the total construction area is a core indicator that directly affects the planning, development and sales of projects. Whether you are a developer, investor or home buyer, you need to clearly understand how the total floor area is calculated. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed analysis of the calculation method of the total floor area of real estate and provide structured data for reference.
1. Definition of total building area
Gross Floor Area (GFA) refers to the sum of the areas of all floors of a building, including above ground and underground parts. It is an important indicator of the size of a real estate project and is commonly used in planning approvals, floor area ratio calculations and sales pricing.
2. Calculation method of total building area
The calculation of total floor area usually follows the following formula:
Total building area = above-ground building area + underground building area
When making specific calculations, the following points should be noted:
1.Ground floor area: Including the construction area of all above-ground floors, such as residential, commercial, office and other uses.
2.Underground construction area: Including the area of underground parts such as basements and underground parking lots.
3.The part not included in the area: Specific areas such as equipment floors, duct wells, and refuge floors may not be included in the total construction area.
3. Hot Topics: Calculation of Total Building Area of Different Building Types
In the past 10 days, discussions on the total construction area of real estate across the Internet have mainly focused on the following building types:
| Building type | Calculation rules | Example |
|---|---|---|
| residential | Apartment area + common area | 100㎡ apartment + 20㎡ public stall = 120㎡ total built area |
| commercial complex | Total area of each floor (including underground) | 5 floors above ground, 1000㎡ each + 2 floors underground, 800㎡ each = 6600㎡ total building area |
| industrial plant | Single floor area × number of floors | 2000㎡ × 3 floors = 6000㎡ total floor area |
4. Hot topics: The relationship between total building area and floor area ratio
The floor area ratio is the ratio of the total building area to the land area. The formula is:
Floor area ratio = total building area / land area
The following is the floor area ratio data of recent popular urban residential projects:
| city | Land area (㎡) | Total building area (㎡) | Floor area ratio |
|---|---|---|---|
| Beijing | 10,000 | 30,000 | 3.0 |
| Shanghai | 8,000 | 24,000 | 3.0 |
| Guangzhou | 12,000 | 36,000 | 3.0 |
| Shenzhen | 5,000 | 20,000 | 4.0 |
5. Frequently Asked Questions in Calculation of Total Building Area
1.Controversy over shared area: Recently, home buyers in many places have questioned the issue of too large a shared area, and they need to clarify whether the shared ratio is reasonable.
2.Underground area calculation: Some areas have special regulations on the calculation of floor area ratio of underground building area, so please pay attention to policy differences.
3.Balcony area calculation: The calculation methods for enclosed balconies and unenclosed balconies are different and must be implemented in accordance with local regulations.
6. Summary
The calculation of the total construction area is the basic work of a real estate project and involves many aspects of planning, development and sales. Through the structured data and hot spot analysis of this article, I hope it can help you better understand the calculation method of total building area and its practical application. For further information, it is recommended to consult a professional organization or check the relevant regulations of the local planning department.
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