Here is the video of Google point of view of single-page website.
The answer is quite generally and Matt Cutts mentioned that it Google is able to crawl as a normal website.
My personally view: if you are building multiple money making pages, this may be an issue as there are no sub-pages to rank. This means you need to have multiple titles and multiple H1 which is not recommended. My recommendation is: use single-page website if you only want to rank for only 1 page (your home page). Else, build the most traditional website format.
Tags single-page website