What are the most common scales used in a floor plan?

The most common scales used in a floor plan are 1/4 inch = 1 foot (1:48), which is widely used in architectural drawings for residential buildings, and 1/8 inch = 1 foot (1:96), often employed for larger commercial projects or site plans. Other scales, such as 1/2 inch = 1 foot (1:24), may also be used for detailed sections or specific areas. The choice of scale depends on the level of detail required and the overall size of the project.