Webtree often utilises the Genesis Framework when building websites.
Whether you are professional developer or a beginner, Genesis provides a solid framework for building quality WordPress websites.
If you are considering building a website yourself, I would definitely recommend the Genesis Framework. See why Genesis is the Foundation of Any Smart WordPress Design. Each theme comes with instructions so that you can replicate the theme as it appears in the preview.
This is a perfect choice if you are on a tight budget but want a solid professional foundation should you need a developer to extend the theme in the future.