In the early days, the unknown unknowns are a big issue.

And I am willing to share with you what I have so far.Direct observation of how you and your business translate knowledge into concrete actions that build the business.The unknowns!

However, there is always risk going from a known to an unknown and I don't know what your education/experience level is.

On the contrary, they have distinct set of policies that clearly tell the applicant "these steps must be followed and you must be approved BEFORE the animal can move in".5) They acknowledge the difference between an animal the resident has been living with or already has, and an unknown animal they are planning on buying. 

Estimating costs for new phone floor/elevation, accounting for unknown costs/mistakes

It is still unknown, though our realtor says it should sell :) Lessons learned?

Sure building multi-million dollar projects are easy compared to remodeling because there aren't any unknowns.

Seems like wholesaling is either unknown to people in the area or is tough to get done.

That's a big risk for the unknown. 

It was determined the upstairs AC unit failed and the water was from accumulation in the air handler, the amount unknown but enough to cause damage to our ceiling.