I am a firm believer that the greenest thing you can do with a home is take an old home and re-use it.  Nothing is more sustainable.  Not only do you save one more piece of land from the bulldozer, you save a boat load of natural resources as well.  You also keep pollutants locked on site and out of the waste stream.

Over at TreeHugger they recently posted Victorian Houses Can Have A Green Makeover Too.  In this post they discussed the recent Eco Open House tours in Brighton, England.  In this tour the majority of the homes were older or very old and saw significant reductions in utility expenses through green upgrades. 

I have also made significant performance increase in my 100 year old home through very simple and mostly inexpensive upgrades, that can be seen in the video below. 

So the next time you think about moving just to be greener, know that you can do it right where you are.