These are postal certifications that the compiler has done the proper list hygiene to assure that they are highly accurate and deliverable.

I doubt people who keep accurate records are going to give you much of a deal. 

@John Miller no one will be able to give you accurate advice without knowing where you are and having knowledge of that market. 

I would have started learning about investing in RE in college rather than gambling on stocks while taking notes.If I have the knowledge and drive back then I might have skipped a party to buy a house or two. 

NOTE that you are gambling that the Interest Rate will AVERAGE 6% for the HELOC.

For any listing, would the seller/agent be able to provide accurate paperwork to prove validity of any listed ROI, cap rate, etc? 

Here is their response when I asked for some information:I will give you a bunch of information to get started but to get you accurate pricing we would need to know the plumbing configuration.

@Liz C. for us to accurately answer your question pick one specific city and then those of us knowledgeable in that market would be able to guide you.

@Sam Josh the short answer is rampant ignorance, charged and driven by entities set to profit from belief in an impending doom, coupled with a means to blast out thoughts and opinions unto the world unchecked, unfettered, with no real means for the average person to accurately discern who's voice is that of legitimacy or lunacy. 

Try to make sure you have as accurate number as possible for your rehab costs...then ad 10%.