There are parameters as to whether the company would be considered a "dealer in real estate" or a "real estate investor".
You can do an internet search using those terms and you will get a huge number of hits.
A few include the length of time the real estate is held, the number of transactions in any given period (or tax year), how the real estate is used (of if it is not used at all), the original intent when purchased, whether improvements are made, the amount of effort involved in selling the properties, etc.
