It's pretty normal to dream about people that have died, the unconscious mind often finds it difficult to differentiate between poeple that have died and people that are still alive - it will simply use their presence in your dreams to symbolize whatever feelings those people evoke in you. Also dreaming about houses, and different parts of a house is usually symbolic of yourself, with different rooms representing different parts of yourself.
http://www.meaningofdreams.org/dreamhouse.htm 