Floor Area is the total measure of the livable, enclosed spaces within a house, typically expressed in square meters (sqm). It represents the actual footprint of the interior spaces where you will live, sleep, and eat, and it is fundamentally different from the Lot Area, which is the size of the land the house sits on.
How Floor Area Works in Practice
Floor Area is calculated by measuring the dimensions of all enclosed spaces in a home. This includes:
- Bedrooms
- Living Room
- Dining Area
- Kitchen
- Bathrooms
- Hallways and Staircases
For a multi-story house, the floor area of each level is calculated separately and then added together to get the Total Floor Area. For example, a two-story house with 50 square meters on the ground floor and 40 square meters on the second floor has a total floor area of 90 square meters.
Crucially, certain spaces are often excluded from the primary floor area calculation. These typically include open or non-livable spaces such as:
- Open balconies and terraces
- Garages or carports
- Service areas or outdoor laundry spaces
- Eaves (the part of the roof that overhangs the walls)
Why Floor Area is Important for Your Investment
The floor area is one of the most important metrics you will encounter when buying a home, as it directly impacts your property’s value, comfort, and cost.
It is a Key Determinant of Price
In the real estate market, price is often analyzed on a “per square meter” basis. A larger floor area, meaning more usable space, almost always translates to a higher property value. When you compare two houses on identical lots, the one with the larger floor area will command a higher price.
It Defines Your Living Space and Comfort
The floor area dictates how much room you and your family will have. It determines whether you can fit a king-sized bed in the master bedroom, have a dedicated home office, or host large family gatherings comfortably. It’s the number that most directly relates to your day-to-day lifestyle and comfort.
It Influences Construction and Maintenance Costs
If you are building a new home, the floor area is the primary basis for estimating construction costs. For homeowners, a larger floor area means more space to clean, more lights to power, and a larger volume of air to cool with air conditioning, all of which impact your utility and maintenance budgets.
A Local Perspective in the Philippines
In the Philippines, the definitions and standards for calculating floor area are technically defined in Presidential Decree No. 1096, the National Building Code. The code provides precise definitions used by architects and developers, such as:
- Gross Floor Area (GFA): The total floor space within the perimeter of the permanent external building walls.
- Total Gross Floor Area (TGFA): The total floor area of all floors, including mezzanines, plus the area of balconies, but excluding certain covered areas.
While you, as a homebuyer, may not need to know these technical distinctions, they are the standards that developers use to declare the official size of the properties they sell, which are then reflected in the Building Permit and other legal documents.
Common Misconceptions
The most common point of confusion for first-time homebuyers is mixing up Floor Area and Lot Area. Remember: Lot Area is the land (horizontal space), while Floor Area is the house (vertical and horizontal space combined). You can have a small lot area with a large floor area if you build a multi-story house.
Another misconception is that all covered areas are part of the floor area. Many assume that a covered carport or a spacious balcony is included in the total floor area advertised. In most standard computations, these non-enclosed spaces are not counted, so it’s always best to clarify with the seller or developer what their stated floor area specifically includes.
Practical Tip from an Expert
When a developer gives you the floor area of a property, especially for a townhouse or condominium, don’t hesitate to ask for a simple breakdown. Ask: “What spaces are included in this xx square meter computation?” This helps you understand if the figure includes, for example, a small balcony or is purely the interior, air-conditioned living space. This clarification ensures you are comparing properties fairly and know exactly what you are paying for.
Real-World Example
The Garcia family is looking at a two-story townhouse in Plaridel, Bulacan. The property listing says: Lot Area: 60 sqm, Floor Area: 85 sqm. This means the land the house sits on is 60 square meters. The house itself has two floors. The ground floor (living, dining, kitchen, one bathroom) might be 45 square meters, and the second floor (bedrooms and another bathroom) is 40 square meters. 45 sqm (Ground Floor) + 40 sqm (Second Floor) = 85 sqm (Total Floor Area). They have 85 square meters of interior living space on a 60 square meter piece of land.
Related Terms
- Lot Area: The total area of the land on which the house is built.
- Gross Floor Area (GFA): The technical term used by architects for the total enclosed floor space.
- Usable Area: The actual space that can be occupied and used, often excluding common areas like hallways in a condo building.
- Setback: The required distance between the house and the property line, which limits the buildable area on a lot.
- Building Permit: The official document where the proposed floor area of a new house is declared.
Internal Links:
- Building Permit: Link to the article defining a Building Permit.
- National Building Code (P.D. 1096): Link to the detailed explanation of the building code.
