Hi Zhi Hao To calculate the built-up area of a landed property, you will need the following information: 1. Floor Plans: Obtain the floor plans of the house, which usually include measurements of each ...

Then, the common area will be split proportionately into 400 sq ft and 800 sq ft (1,200 sq ft divided in a 1:2 ratio) and get added to the respective built-up areas to arrive at the super built-up ...