Generally when you buy a new flat from a builder, he gives it to you with all the civil work is done, so you just have to focus on the wood work such as cupboards, furniture and kitchen. In the process of building, you can just ask the builder to put in tiles, fittings, etc. as per your choice.

In case of missing any part of the house or buy an old flat and decided to get a newer feeling to the place or renavation is required then .