Finally we bought a house. I am ok with that 20 year old house as it is  but the others are not. It is true that the design is not perfect. But I feel it is good. The construction is very good.

We  tried to see if we can renovate it, but looks like that is not possible. We will need to make lot of compromises to get what we want. 

Anyways, after a lot of deliberations we decided to demolish the old house and build according to our design. Now the architects are working according to our suggestions and then the work will start.

we are not in a hurry as I am not planning to shift till next May, till A's exam is over.