And the structure cannot be an older style with under-sized studs, beams, headers, etc. 

The neighbor told us she taught pole dancing in one of the rooms & the guy who bought the home from us found the solid brass pole in the basement & the ceiling header & floor base firmly attached in one of the upper 6 bedrooms.

IRS publications carry exactly zero legal weightb. if we look at the header of this thread

If they are load bearing you can always install a header.

To name a few HVAC for unit 1 is 20 years old and could not fully inspect the heat, the pipe to the sewer has completely dropped and is not connected, in basement the window header, subflooring and joists are damaged from termite activity, and their needs to be some tuckpointing and masonry work done for the exterior brick. 

@Noah Bacon Investors should be aware that, in many states, an investor can not act as Owner/Builder on a property that is not their primary residence.But as far as what Investors tend to screw up, the list is long and painful: Structural - Awful framing, undersized headers and beams (or none, Lol)Electrical - Don't even get me started......Plumbing - Not as bad as electrical but still....leave it to the Pros.And the main thing that people screw up is, believe it or not, painting.

When my mechanic says " I had to put new gaskets on your headers and tap out some old bolts" I say "Cool, Thanks.

You can go to Redfin.com and put a search area in “list view” - versus map view and it will let you sort that area by all the table headers in the list - so you can sort them by $$/sqft for instance.  

It is located under the header "Analyzing Deals"

Include a statement in your marketing and in the header of your application so everyone knows about it.