Hi,
I used to do the job like this for a year or so it is no big problem to do what you want. All you need is create content and publish it to a some kind of blog. Getting people know what realtor is and something about your work, and then you start with some listings and things. Like I said, it is not big deal to do that.
First of all you need to have your social media page, after that we talk about content and then we do the trick. I call it Golden 10 strategy. So, for this strategy you will need to have following milestones.
As you know you'll need to advertise so prepare budget for campaigns.