Social media content is similar to any type of content you're creating. As much as possible, it should be personal, unique and in-depth.
There's essentially zero value in 2016 in creating filler content that is similar to the content on 1000 other real estate websites. For example, boiler plate language on staging a home.
Instead, write up a 2000 word case study on a specific example showing how a successful staging resulted in getting 10% increase in sell price. Use photos and anecdotal comments and observations that come from your personal experience.
Would that 2000 word case study + photos take time? Of course. It's hard work. Which means very few of your competitors are doing it.
If you combine the above strategy with smart keyword research, you can build a long-term SEO machine. Again, you'll find very few of your competitors are doing this. Life is busy, this stuff is hard and takes time. But, it's effective if done well.
How does this apply to social media content? Social media posts can be useful for staying in touch with people who already follow you (existing relationships and previous clients). You can do some basic monthly updates to stay in touch, but it's not likely that this content will lead to many new clients or leads. Creating the type of content outlined above and pushing out through your social media channels, however, can lead to new business.
When someone interacts with your content, you want them to say, "Wow, that was really smart and informative."