MLS Listings approaching a year old...

[Matt Yates]

I'm interested in single-family rentals, but right now my search is mainly limited to craigslist and the MLS. I'm not actively searching, mostly keeping an eye out on the market until later this summer when I will be able to make my first deal happen. There's a couple of properties on there that are over 120 days old (one of which is over 6 months).

For those more experienced in the RE game, what are the main reasons for these listings becoming stale? I understand each situation's different, but what is the most common reason? What are the major "hidden" things wrong with these properties that might be contributing?

I'm not even talking about pie in the sky listing prices with owner unwilling to budge. Each of these properties has had regular price decreases, so needles to say my curiosity is piqued.