I had house dreams for years, too, Carole, and they stopped when I got a home of my own. often they were in a house by the sea (havent achieved that one yet!)
re tea at the White house, as a guest of the President or one or more of his family members. your subconscious mind is not political. so any time you dream about a president, you are dreaming of a leader, the highest possible achiever in your world/country/dream. (even if you may not hold that view of him in your waking hours)
and everything in your dream is a manifestation of some aspect of your self. So when you are at the White House, you are acknowledging/meeting visiting some aspect of yourself - the President's mother, for example, could represent some aspect of yourself such as your highest, wisest female consciousness. the cup of tea is nurturing - your dream may be telling you to listen to your female intuition.