There are a number of ways for property management companies to gain new clients but as with all marketing campaigns some methods are better than others and measuring ROI is key with any property management marketing campaign.
Property management marketing can be broken down into online and offline strategies. Here is a quick view of the most common methods for each:
Pay perclick - google etc.
Lead generation services
Each of these tactics must be evaluated in terms of the time and money they require to deploy and the results that they generate. One of the advantages of online marketing is that it is easier to measure it's performance using the any of the many analytics products that exist. Measuring performance is easier with some tactics than others, with pay per click marketing for example you should be able to see exactly how many leads have been generated for the dollars you have spent. Other tactics like blogging, while still measurable, require a little more analysis to understand exactly what the ROI is.
The starting point for any online property management marketing campaign is a company website that is designed to communicate to prospective clients what you do and how they can contact you. As simple as this sounds, many many company websites do neither. You company's website should be built in such a way that visitors are able to figure out what you do and find a way to contact you within seconds. Your companies phone number should be prominently displayed on your homepage as well as every subsequent page of the site.
While participating in social media is a very trendy thing to do right now, it is a long term strategy that requires regular participation. Make sure that your own website is optimized for seo (search engine optimization) before you start spending time on other places on the web.