The CEO of Property 23, Sean Whalen, was honored last Fall as one of the top 40 successful entrepreneurs in Utah under age 40 by Utah Valley Business Quarterly Magazine: http://www.prweb.com/releases/2010/10/prweb4597824.htm
However, the company does have complaints against the way they do business and has been accused of scamming investors. Empower Group is the former name of Property 23:
Under their former name, 'Empower Group', Property 23 was not accredited by the Better Business Bureau, however they did receive a C+ rating: http://www.bbb.org/us/Find-Business-Reviews/name/Empower+Group/Orem-UT/
See more, here: http://www.bbb.org/utah/business-reviews/real-estate-advisors/empower-group-in-orem-ut-22240780
Property 23 cannot be found in the BBB listings.