Real Estate terms
Carpet area: Total usable area within the four walls of an apartment or a commercial space. It may come roughly 70 to 75% of the super built up area.
Built up area: Entire carpet area along with thickness of exterior walls of an apartment and the balcony.
Super built up area: Built up area plus the proportionate share in common amenities like lift area, lobby, corridor etc.
Undivided share in land = (Super built up area of apartment x total land area) / sum of super built up areas of all apartments.