A great way to get started is to have a discussion with your family to figure out exactly what kind of changes you are looking at. Take everyone’s needs into account – your mother might want a small puja room to herself, or your dad might appreciate a study room where he can display his collection of books. Your children may be glad to have an area where they can put up a swing. Do your homework: surf the net, read home interior magazines for ideas.
Keep in mind how the renovation process will affect everybody – if you have elders or children at home, think about a temporary relocation since the dust, paint and varnish tend to bring on bouts of coughing or allergies.