A good way to accomplish that is through a combination of blogging and Social Media.
In your blogging, you want to leverage marketing communications called "value marketing." Value marketing involves writing short articles available on your blog/website that provide clients with some kind of useful information on topics such as trends, helpful financial tips, and homeownership information.
Then, you use social media to establish connections with past and future homebuyers, and regularly link to the content that you are posting to your blog. This way you are regularly staying in front of your clients while reaffirming your expertise.
Some key tips to remember:
Post regularly. Frequently updating your blog is the best way to ensure that it will build a following and foster a reading habit among your clients that will expand over time.
Remember the word "value". You want to draw upon your expertise and experience to write posts you know your clients will appreciate and find useful.
Leverage the full range of social media. LinkedIn, Twitter, Facebook and Google+ are essential ways to publicize your blog posts, and expand your readership. But don't stop there — broaden your reach by contributing to Zillow/Trulia blogs (the two companies have merged).
Be unique. The web is full of "content" that has been reproduced and rewritten time and time again. Avoid saying what has been already said. A good way to be unique is to cater to your local market by providing information unique to the area.
Optimize your posts. Search engine optimization (SEO) uses keywords to help posts rank higher in search engine results. To accomplish this focus on one or two keywords; ensure they are in the title and, if possible, the URL of the document; but mention the keywords at a normal rate in the article.
Be concise. Your blog posts don't have to be long to be good. Readers are far more likely to read – and value – a short, snappy and informative piece.