Sellable Commercial Area: What It Is and How It’s Calculated
When determining the market value of a property, one of the most important elements to consider is the Sellable Commercial Area (SCA). This parameter allows for an objective assessment of the total value of a property, taking into account all its areas, whether they are livable or accessory.
Definition of Sellable Commercial Area (SCA)
The sellable commercial area represents the sum of all the areas that make up a property, weighted according to their functionality and relevance. In simple terms, not all areas contribute equally to the market value: primary areas, such as livable spaces, carry more weight compared to accessory areas, such as balconies or storage rooms.
This concept is crucial for providing a fair and comparable evaluation among properties, as it considers the contribution of each part to the overall value.
Components of the Commercial Area
A property is generally composed of two types of areas:
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Primary areas: These refer to the internal livable spaces, such as the living room, kitchen, bedrooms, and bathrooms. These areas form the core of the SCA and are calculated without any reduction or weighting.
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Accessory areas: These include all complementary spaces that enhance the property, such as balconies, terraces, cellars, garages, gardens, or covered patios. While secondary, these areas also contribute to the overall value of the property, albeit with a different weight compared to primary areas.
The Role of Adjustment Coefficients
To calculate the sellable commercial area, accessory areas need to be "homogenized" with the primary area. This is done using adjustment coefficients, which are numerical values that weigh the contribution of each area based on its importance and usability.
For example:
- Balconies and terraces: Typically weighted between 25% and 35%, depending on whether they are uncovered or covered.
- Cellars and attics: Usually weighted at around 35%.
- Private gardens: Weighted between 2% and 10%, depending on size and location.
- Garages: Typically weighted at 50% or more, depending on their utility and accessibility.
These adjustment coefficients are determined based on market standards, technical norms, or established real estate practices. They may vary slightly depending on the geographical area or the specific characteristics of the property.
A Practical Example of Calculation
Let’s calculate the sellable commercial area of an apartment consisting of:
- Livable internal area: 100 m²;
- Uncovered balcony: 20 m² (weighted at 25%);
- Cellar: 10 m² (weighted at 35%).
The SCA is calculated by summing the weighted areas:
- Primary area: 100 m² × 100% = 100 m²
- Balcony: 20 m² × 25% = 5 m²
- Cellar: 10 m² × 35% = 3,5 m²
Total SCA: 108,5 m²
In this case, the property’s market value would be calculated based on 108 m², even though the total physical area is 130 m² (the sum of all areas without weighting).
Why Is the SCA Important?
The sellable commercial area is an essential tool for real estate professionals, including appraisers and agents. It allows them to:
- Objectively determine the property’s market value;
- Compare properties with different characteristics;
- Avoid discrepancies or undervaluations related to the property’s accessory elements.
For buyers, this parameter is equally useful, as it provides a clear understanding of the property’s actual economic value, considering all its components.
Conclusion
The calculation of the sellable commercial area is a technical yet fundamental aspect of properly evaluating a property. Understanding how this value is determined is crucial for both sellers and buyers, as it provides a clear and realistic view of the real estate market. For an accurate assessment, it is always advisable to consult qualified professionals who can correctly apply the weighting coefficients and provide a precise estimation of the market value.
