Gross External Floor Area Calculator

It s used when assessing areas for planning application purposes.

Gross external floor area calculator.

Gross external area is the area of a building measured externally at each floor level. Area is a quantity that describes the size or extent of a two dimensional figure or shape in a plane. Quite simply its the measurement of the entire building taken from the external face of the perimeter walls. The best way is to go outside and measure the length and width of your house and multiply those figures together.

The cost per square metre figure allows for a finished home including kitchens and bathrooms but not including external landscaping. Order of cost estimating and cost planning for capital building work the gross external area is the area of a building measured externally i e. It s the area measured to the internal face of each external wall for each floor level including areas occupied by internal walls. You need to find the gross external floor area gefa of your house both upstairs and downstairs.

Gross internal floor area is the measure we use the industry standard. It can be visualized as the amount of paint that would be necessary to cover a surface and is the two dimensional counterpart of the one dimensional length of a curve and three dimensional volume of a solid. The three definitions of area are as follows. Gross external area gea is the area taken to the outside face of the external walls of a building.

So what does that really mean. Gefa is defined as the area of a dwelling measured externally at each floor level. Gross internal area broadly speaking the whole enclosed area of a building within the external walls taking each floor into account and excluding the thickness of the external walls. There are many ways to calculate the total area of your floor plan.

Related surface area calculator volume calculator. For those measuring inside the thickness of the walls should be added and any integral garage would also need to be included in this calculation. Insert the gross external floor area see measuring your home in the box marked external floor area and select the appropriate radio button m or ft. If you have the area of individual floors then click on the link for help in calculating the external floor area and a simple calculator will appear.

The ways of defining total area depend on what factors of the building should or should not be included such as external walls internal walls corridors lift shafts stairs etc.