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Built up area , super built-up area and carpet area

Built up area :- 
1. Built up Area is the carpet area plus the thickness of outer walls and the balcony. 
2. Everything covered under roof.
Include - external and internal walls,untiity ducts which are in the property,un- covered balcony,common staircase etc.
3. Built-up area =1.1 *carpet area.
Super Built Up Area :- It is built up area plus proportionate area of common areas such as the lobby, lifts shaft, stairs, etc proportional common are like lifts, lobbies, amenities.
Ex- building have 10 flats & 2000 sq .ft proportionate area which is called super built-up area.

Carpet area :-Carpet area is the area that can be used to spread a carpet inside the house.
1. Actually usable area of a room.
carpet area =build up area - walls -lifts , utility ducts.
2. Excluded - sanitary blocks,common staircase verandahs, corridors and passage, balcony external wall,terrace, ac duds.
3.Rera - real estate regulation act 2016.
Area Measurement of a building
FSI = Total build up Area / plot area.


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