Can two flats with basically the same super built-up area differ from each other's carpet area? Yes. Two flats with the same super built up area can have different carpet area because the loading percentage and building design may vary. A project with higher loading allocates more space to common areas such as lifts, corridors, staircases and lobbies, leaving less usable carpet area for the homeowner. Before buying a property, compare the RERA carpet area instead of only the super built up area. Understanding the difference between RERA carpet and actual carpet, https://www.laxmigroup.co/articles/carpet-area-vs-built-up-vs-super-built-up-area-key-differences-explained/