This is a great forum with very knowledgeable members that will help to guide you in the right direction.There are a few self-contained guides that you can access here: https://www.biggerpockets.com/guidesAlerts can be really helpful too: http://www.biggerpockets.com/alerts

I'm rebuilding a staircase that's entirely contained in a single unit so it sounds like not all of the traditional rules apply, but I can't find anything for sure and search results are bringing up amlegal and chicagocode sites that don't really answer my questions.

Rob claims, "My emails contain high-quality information, tips and proven strategies."

The information contained in this post is not to be relied upon. 

There was a withdrawn temporary regulation contained a similar rule that prohibited the aggregation of rental and business operations unless one operation generated less than 20 percent of the combined gross income from both operations. 

(iii) The associated person restricts his participation to any one or more of the following activities:(A) Preparing any written communication or delivering such communication through the mails or other means that does not involve oral solicitation by the associatedperson of a potential purchaser; Provided, however, that the content of such communication is approved by a partner, officer or director of the issuer;(B) Responding to inquiries of a potential purchaser in a communication initiated by the potential purchaser; Provided, however, That the content of such responses are limited to information contained in a registration statement filed under the Securities Act of 1933 or other offering document; or(C) Performing ministerial and clerical work involved in effecting any transaction.

My initial impression of Bigger Pockets that it contained few heavy hitters. 

There were two material terms contained in the Settlement Agreement: (1) PIP would take down defamatory content about Plaintiff on the internet; and (2) PIP would give all tax liens that were not redeemed back to Plaintiff.

The theory is that each unit (all of which are wrapped in extensive insulation on all six sides and contain ERV HVAC system) should be able to stay warm with just the heat given off by the residents, their stove, tv, lights, etc.  

The cost of a misstep at this juncture can be very high if you rely on uninformed opinions put forth on a public website.Second, the link you provided appears to be an appropriate representation of the definition of disqualified persons contained in IRC section 4975.Third, depending on specific facts and circumstances, the transactions you have alluded to may have more to do with prohibitions against "self-dealing" than disqualified persons.