Hi Steph. Feel free to check out http://www.mlsli.com.
You can also check out local newspapers and other print ad. Maybe, word of mouth? Always make sure that you verify ownership whenever exchanging money, especially if you use a service like craigslist. If you need assistance in your search, please feel free to give me a call.
I hope this answered your question! If you have any further questions, please feel free to contact me by the ways below.
Wishing you all the best,
De Vonte Williamson , LSA
Proudly Serving Long Island
Coldwell Banker Residential