I would highly discourage contacting them frequently if you don't have business to perform, as this could cause you to be ignored and labeled as a waste of time.

I love the idea of offering my time to perform open houses for other agents in my market in order to practice my communication with clients, build my own leads list and just to get my name out and network.  

The purpose of Real Estate School is to teach you the LAW, not to sell.As a previous poster to accurately mentioned, you need sales skills, scripts, dialogues and techniques to carry the day! 

My question is how do they perform the due diligence to check out a property to determine if it is a worthwhile investment ?

Yes, the real estate taxes there are accurate.

If this is accurate, then she should either:1.

Larger properties create economies of scale that can result in higher yields and more stable cash flow.Returns: It's not uncommon for investors to make a better return being passive than they would have if they took the plunge themselves.Direct access: Unlike traditional investments, passive real estate investment offers direct communication with the people responsible for the performance of your investment and the properties themselves.Tax benefits: Investors can receive significant tax advantages that come with ownership of real estate, such as depreciation.

The septic failed it's inspection and will need to be fully replaced, I received a quote for $30K which is accurate to the system needed and high water table area.

I will be redoing some things so will need new permits.So there have been no permits for the work performed so far?

Another concern would be using unqualified help to perform your rehab.