.- (more and more municipalities are adding anti-STR regulations- you are competing against so many other people who want to jump on the bandwagon- you have no real control or authority on the properties you manage- you will be held accountable by the real owner and by the renters - but no deep pockets to handle issuesSeems like a niche that is being squeezed out. 

What are yall's thoughts on adding a mansion-style house hack to your portfolio?

Adding a bedroom could be relatively easy in many cases. 

Added bathroom and redid kitchen

I would imagine any final version of drawings in you posession  will contain language similar to what I am including below:

AD

I rehabbed a 1978 home with all original cabinets and I repainted them, added new hardware and I swear you cannot tell the difference between them and new ones.

Adding keywords related to your investment strategy or market locations can be updated in your settings.

Also, I am not sure it’s worth the costs since you have small homes: the studies are usually reserved for large buildings with multiple units.

The following looks at hypothetical purchases, anecdotally and in relative isolation, meaning there may be a reason (for instance to generate large tax losses for "active participation" investors to offset other income) for some individuals to undertake a particular kind of purchase.