CoStar is an incredible addition and tool for market research. Whether you are trying to find your next deal, or are trying to fairly price your current sale, CoStar offers immense insight and knowledge that you can't find anywhere else. Review collected by and hosted on G2.com.

The biggest thing with CoStar is that from my experience, there is a pretty steep learning curve. I have done two training sessions, and have just spent time in the program, but it has taken me a decent while to feel comfortable using it. Review collected by and hosted on G2.com.