This calculator provides a simple method for valuing an income-generating rental property as a component of your FIRE number. It's easy to track liquid assets like shares, but it's less obvious how you should value a rental property if you intend to keep it as a cashflow-generating asset when you retire. This calculator does not consider the current capital value of the rental property, because that's irrelevant to its income-generating capacity. See this post for more information.
These calculators (and the web app serving them) were written using R Shiny, and hosted on my personal Shiny Server.
Let me know if you have any comments, notice any issues, or want to send pics of your dog.