The HBLL provides access to many resources dealing with ecological design and building. Much of the content is available online through paid databases or in the form of ebooks.
As you search you'll notice that the location of physical resources are in various places in the library - mostly on the 2nd floor (TH call #'s are Building Construction), with Architecture on the 5th floor (NA call #'s).
If you have need help or have a suggestion for this site or a resource BYU should have, contact me.
Here are some example searches on the HBLL website illustrating how to find different types of materials (e.g. books, articles, news) from different providers. The number of vendors means that it is not always exactly the same experience, but we try.