While the world embraces tech tools to automate workflows and tasks, reduce errors, and thereby increasing precision, the Appraiser is basically doing the same thing they did 80+ years ago.  

@Jack Bobeck Certainly no fun, but it's not exponential growth. 

There is a function MIRR in excel that takes that into account, you can also think of this as your Compound Annual Growth Rate. 

However, for someone has wanted to invest in a locale that has had a long period of real estate price growth, I'm trying to choose my learning opportunistically.

I have completed kitchen, bath, and whole home remodels as well as small handyman tasks for homeowners and businesses. 

Here are the assumptions I've built in:Flat to slightly negative rent growth for 2020 and 2021Double total vacancy in 2020 (at least 15%-20%)At least one year of reserves (Fannie/Freddie may now require 18 months!)

What is the population growth over the last few years?

This will probably be the most difficult task.

So, unless I find a task on my rehabs that would cost over $500 to sub out, I'm not planning to lift a finger on any of my rehabs.

Look at the following indicators over a 10-15 year period to understand trends: population, job growth, job diversity, income growth, median (not medium) home price, crime rates, and vacancy rates.