Most people often associate interior renovation with A&A works. They are not the same. Let's define the following.
A&A works: It is making changes (interior or structural) changes to an existing property as long as the construction does not exceed 50% of either the GFA, Structures elements such as beams and columns, or external walls.
Reconstruction: It means making changes to the property when the construction is more than 50% of the GFA, structure elements, or external walls. On top of that, it will also be a reconstruction project if the height or form of the property is changed. For example, from a single-storeyed terraced to a double-storeyed semi-detached house.
Renovation - It simply means making non-structural or minor changes to the interior space of a property.
Design & Build - A one-stop service provided by a house building contractor with its in-house designer or architect. House owners can enjoy a large amount of savings. The savings can then be re-diverted to better quality materials and stronger profit margins if the homeowners were to sell the properties in the future.