You got ninety percent of the American public out there with little or no net worth."

It's a good bet that the places that saw the biggest declines will still be the weakest come the next market decline unless they've had some major changes (neighborhood revitalization, new public transportation options, etc).  

In that article, I briefly outline the major benefits (commissions, MLS Access, extra buyers, extra leads, and "pocket deals" that are unavailable to the general public) as well as the awarenesses you must possess (agency, disclosure, comparable values, as well as the use of State contracts and not those BS contracts Wholesalers typically use).If you are looking for the Internet's ONLY source of "Realtor® Specific" information with regards to Investing (particularly as it relates to Wholesaling) then you need to check out the blog at TenMinuteSkill and The Red Pill Investor Podcast. 

I no longer represent the general public, but would be happy to introduce you to skilled investment agents that do.

simple answer as suggested is go to open houses that is open to the public and looky loos are welcomed anything other than that in my mind is devious and or unethical behavoiro

Here is the tenants rights and laws for SC.http://www.scbar.org/public/files/docs/tenantsrights.pdf

Is it public record?

Is this a common sales practice or usually inside deals where the builder cut it with their buddies and generally not accessible to joe public?

Have I now met the requirement of making the unit available for rent under the Pre-rental expense provision in Publication 527?

I'd say you have a good case for tortious interference with a contract, but only if you find a judge who isn't willing to say that low-income housing subsidies are for the good of the public welfare (and there is a case that is getting harder to make these days!)