The land, zoning, waste disposal system, in ground oil tank, elevations, liabilities, encumbrances, lot size, setbacks, and other issues that may have impact on an investment decision and any value add opportunities or lack of. 

I think it was some car shark guru! 

@Austin JamesUnderstand the area, the current tenant base,the median income, is it in a flood zone, the age of the asset, the condition of the plumbing, the electrical wiring, the fuseboxes, the age of the roofs, the age of the mechanicals, the condition of the foundation, the drainage of the property, does the property have a C of O, is there ny environmental concerns such as oil tanks being buried, the current property management company, what are the amenities.These are just a few things to look out for.

(Oh, and before you ask, yes, the gas tanks got taken out in the 70s and we've been given the all clear from the city and state :)

Hi, I know this is a few years later, but I am looking into the the Wholesaling, Inc (The Land Sharks) course.

Some common disputes I see are concerning the landlord failing to do his or her duties under the lease (e.g. make repairs); slip and falls by a tenant or a guest of the tenant; injuries caused by landlord's failure to properly exercise his or her duties; environmental issues at the property (typically commercial, e.g. alleged that an underground oil tank started leaking causing damage to business); disputes over the security deposit; illegal clauses in a lease; failure to reimburse the tenant for a repair he or she made; Entering a tenant's property illegally; failing to disclose environmental issues such as lead paint; or trying to evict the tenant illegally.

Also what type of repairs-new hot water tank, replacing all the electrical and plumbing?

A tried and true veteran of the construction shark tank both commercial and residential, you really want to take the extra few dollars and protect yourself. 

Here's homework - write down 5 ways that debt is positive and can help you.Having a free-and-clear investment property is not even always considered a great thing because it can attract the sharks, lawyers who see it as a huge dollar sign.... better to keep it mortgaged so it doesn't look so attractive.So yes you could look at it as shuffling around numbers, but your ultimate goal (as you stated) is to live off of your investment properties.

Every person who seemed to hate it, failed to acknowledge the policy as a holding tank for money with a roughly 4% compounding return.Here's the cool thing though: I recently got a first-position HELOC on my investment property, which used to be my primary residence.