We currently get the majority of our data from publicly available online listings (predominately from https://3taps.com/ and http://www.rentjungle.com/.)

Increasingly, we are also adding actual data from integrations with our customers' property management systems. We think this data set will be more accurate and more valuable, although it obviously takes a lot more work to build.

One of our goals is to be able to understand the difference between listed and actual prices in various markets.