How do you incorporate Appreciation into Net Worth and Performance numbers?

[Lloyd Preece]

Hi team, question regarding how to incorporate Property Value Appreciation into Net Worth number and Performance Numbers..

When I do my monthly/annual net worth spreadsheets and when I review individual property performance, one of the thing I always struggle with is inputting a number for current property value. Obviously calculating metrics such as realized cash on cash returns, loan paydown and ROI (Ex Appreciation) is easy to do since the profit/loss is visible and felt. However, as we all know Appreciation oftentimes tends to be the biggest driver of wealth building and is up to interpretation when youre homes aren't on the market, especially in this changing environment.

When you all review your property performance and net worth numbers, how do you incorporate Appreciation of your RE assets? 
A few methods I've considered:
1) Getting properties appraised once per year and using that number
2) Taking regional %change stats and applying them to my purchase price since date of initial investment
3) Looking at comps in the area and applying an average
4) Asking RE agent to give their estimate of what it is worth today
5) Not accounting for Appreciation at all in my performance numbers and simply treating it as icing

What do you guys do? Any thoughts/methods welcome!