Square footage is an important measurement for real estate agents, appraisers and homeowners. It's a common term used to describe the area of a house, apartment or office space. However, there are several synonyms for the term square footage that can be used interchangeably. Some of these include floor area, living space, floor space, foot area, floor plan, and size of the area. Although these terms may differ slightly in their definition, they all essentially refer to the amount of space within a given property. It's important to be familiar with these synonyms to avoid redundancy in your writing and to have a better grasp of the property's overall size.