Setting your home floor area

Entering an accurate floor area into imeasure for your home will ensure that you receive the most accurate and informative results. The floor area is especially important for generating an accurate energy performance rating and calculating overspend and under spend.

The floor area needed is the ‘total heated floor area’ in squared meters (m2) which is defined as;

“The total area of all enclosed spaces measured to the internal face of the external walls. Included are areas of sloping surfaces such as staircases, galleries, raked auditoria, and tiered terraces where the area taken is from the area on the plan. Excluded are areas that are not enclosed such as open floors, covered ways and balconies”

To edit your floor area go to the "Buildings" tab and click 'Edit'. The field to update is "Floor area".

Easy places to find your floor area

The easiest way to find your floor area is to check documents which might already show it. If you rent your building the floor area should be given on your tenancy agreement. If you purchased the building the area should be given on plans or deeds. If the area is given in squared feet (ft2) you will need to divide by 10.76 to get the area in m2.

Calculating

If you do not have access to the figure then you will need to calculate it. This is not difficult but care should be taken.

It is helpful to draw a plan (bird’s eye view) of each floor of your building. Most buildings can be drawn as a series of boxes. Use a tape measure to measure the length and width of your home from the inside of the external wall at one end right the way to the inside of the external wall at the other end. Ignore any internal walls and make sure you take measurements in metres. Multiply the length and width together to get the area in m2.

Do the same for each floor and add them up. You must not include unheated areas like garages or lofts. Staircases must only be counted on one floor even though they span multiple levels.