Some do and some don't. You need to find a good buyer's agent in your area, and explain what you are looking for. If the person is willing to do the digging to find these kinds of properties for you, then yes. Many won't take that time.... more
Many Realtors don't like rent-to-own properties for various reasons--some legitimate, some less so. And some aren't too familiar with the process, so they tend to avoid it.
Many rent-to-own properties aren't listed on the MLS that way. In lots of cases, you (or your Realtor) have to identify possible rent-to-own properties from those that are listed either for sale or for rent. Then you make an offer. That's why a lot of Realtors will tell you--correctly--that there aren't many listed on the MLS. But the flip side of the story is that there are a ton of sellers and a ton of landlords who will accept such an offer if presented to them.
What you want to do is find a Realtor familiar and comfortable with creative financing. Probably someone who's used to working with investors, since many investor deals can involve creative financing. And while there are a number of ways to do that, the simplest sometimes works well: Ask. Just ask.
As for finding rent-to-own properties, here's a blog I wrote on that: http://bit.ly/findaleaseoption You and your Realtor can try some of the techniques described there.