eco houses were can i view designs and costings?

Answer 1

There is a lot of information available on the internet. A Yahoo search for "eco houses" (include the quotation marks in the Yahoo search box) yields 9,440 results. If you do the same search, and are willing to spend a little time exploring, I'm sure that you will quickly find lots of useful and interesting information.

Good luck with your search.

Answer 2

Try these links:
http://www.emagazine.com/view/?229
http://architecture.about.com/od/greenarchitecture/
and more besides with a Google search on ecology+house design