Thanks Bryan,
I definitely want to spend time properly treating the listening space in our next house.
Fortunately, I don't have to worry about AC noise - I'm battery powered (except the Rega)
Like you, I will (one day) be building a home from scratch. We'll be going COMPETELY natural - local timber, adobe/cob from our land, earth plasters, and a tamped earth floor (looks like stained concrete but MUCH more resilient and warm).
We love area rugs on our floors and walls, so we can manage most of the immediate nasties there.
I do look forward to our likely move. I want to really spend time optimizing the sound of the room.
Until we make our final move to our land (fully off the grid) I may treat myself to a deephemp sub to get the most out of the system while AC juice is available
We had some friends over last night for sushi - an Aussie co-worker of mine and her husband, who (as I learned last night) is an audiophool too. I was extremely aware of the inproper room treatments as we did some listening, and he noticed it as well. He had never heard single-drivers and was amazed by the smoothness of the midrange, and felt that the room was not allowing the highs to shine.
Who knows, I may end up doing some 'quickie' temporary treatments until we move. It's really hard with those windows, though. Maybe a really thick blanket (down comforter) hung across the windows?
EDIT: I am considering some GIK panels (3 in front, 4 in the front corners, 4 on the sides at the first reflection, 3 on the ceiling). I would move these to the new place and then assess if additional treatments would be necessary (with advice from you lot, of course) Thoughts?