This calculator is a way of estimating the Total Gross Floor Area of your new home. It can help in the design and estimation of cost stages of your project.
Simply estimate the size of each room in your house, and the number of these rooms. At the end it will add up the total and factor in some allowance for walls and circulation like hallways.
This gives you the total internal ‘Gross Floor Area’.
Additionally, from the size of the house we can estimate the total external area. Both of these numbers are needed in our Building Cost Calculator.