As a real estate investor, you can put a flip calculator together and estimate what the specific project costs are going to be. I think that the biggest unforeseen investment expense is the one you as the investor are hiding from yourself in order to make the deal look better. What we seem to find is at the end of the day, investors are not making as much money as they thought but they’re not looking at why. Tracking all of the expenses associated with a specific project is important because once you have finished a project, you can go back and look at records for numbers to evaluate how your next project is going to go. People get antsy to buy a property and start throwing out costs like staging, vacancies, time invested, utilities, property taxes, etc. There are many costs that people forget about that may not be associated with an interest expense or acquiring the property, which can add up and take away from the bottom line.