I'm with Lori. Unless your fans are really active on it, than it won't show up in their feed. I've just about given up on FB. (I put a lot of my focus on Twitter and Instagram).
But if you do want to use FB, just like social media, you want to post there at least daily and don't spam your customers. Use the 80/20 rule. 80% of what you post should be "Fun" stuff, like behind the scenes things you are working on, funny pictures, etc. Than the other 20% will be your actual promoting of listings.
Also, google "Facebook Marketing." This will give you a lot more tips on how to efficiently use Facebook. I know before from my research, if you hashtag y our posts, most people clicked on posts that had two hashtags, but if it had three or more, they wouldn't click. And pictures got more clicks than just regular posts. I'm sure there's a lot more stuff out there, but these are the only ones I remember.