[abas]

Any advice for if the company has not received outside investment and has no plans to seek it?

The best I've been able to come up with is to make a guess as to how much I think the company might one day be worth and then estimate my stock's value based as a percentage of the issued stock. I know my stock can be diluted, but I'm not really sure how to take that into account at this point.

[nivi]

That sounds like a good approach.

You should also include unallocated options in the calculation of your percentage. For example, how many options does the company plan to issue in the next 12-18 months?

This is like including unallocated options in a fully diluted basis.