Board Thread:Wiki-Related Questions and Answers/@comment-4975807-20130417180235/@comment-4839682-20140424025428

The general rule is that, if you don't have a proper name for a subject, it probably does not need an article. (There are exceptions, of course) The fact that it does not have a proper name heavily implies that something is unimportant.

I also wouldn't call her house a mansion... but eh XD