How can I automatically break the page before the bibliography IF it will break over two pages?

I’m writing an essay / paper / whatever with a bibliography. I have a template (uses the article class) which includes my essay copy, and I use biblatex (set up in that template) for all my references and bibliography. These are 1000-1500 words, so the bibliographies are fairly short.

By default, my bibliography just sets at the end of the essay (this is the default for the class). If the bibliography is long enough that it breaks over two pages (some references go on to the next page) I put a page break before the bibliography. Now there’s some blank space at the end of the essay, and the bibliography is on a page of it’s own. But I don’t do this if the bibliography is short enough that it fits between the end of the essay and the bottom of the page.

How can I automate this in the template? I assume that I’ll want to somehow measure the distance between where the bibliography would begin and the end of the page, test whether the bibliography would be longer than that, and then if it would insert a pagebreak. How would I do that? Or some other, better way of achieving the same thing?

Or is this just really bad typographical practice? I just think it looks better…