Okay
First what I sense from your dream is you are a Soul; that you are the essence of the feminine and therefore perceive the world from the intellectual soul point of view without the spirit of Ego (the feminine soul's Ego is God - if I can say that and hopefully it is understood in it's essence)
The big rambling house may be a past life recall. But let us put it into the present.
Normally a house symbolises you - your temple, your body. Or it might symbolise a meeting place (it could be this very board) either one, it relates to you and your perception of it. Being unfinished and the wilderness area suggests an open mind and freedom in thinking and a want to share the things you see.
The wooden platform : Wood is associated with the vegetable world or the Etheric realm. Being large but thin suggests a veil over the etheric realm (The etheric realm is where intuition is gathered - the air) and with the above wilderness suggests you lift the veil. The platform tipping slightly suggests the etheric/air realm again. It is on water - the intuition is in the Astral realm (Astral - spirit world) swimming in the water, its dark, cool and still with a feeling of calmness after and not seeing where you are going suggests you are using your intuition in exploring and not your logic. (True spiritual exploring is intuition and not logic)
The house is your stability because you have a pleasant feeling associated with it; it is a base in the air and the water. The other people may be your spirit guides or it may be yourself or other people in your life but they are quietly in the background with no pressure on you.
To me the dream is not an actual experience but it is what you are feeling. This feeling creates the symbols associated to the feeling.
Blink if you've noticed I'm practising my dream skills, please let me know what you think.
Love
Caryn