There's the commercial corridor on Lancaster that will hopefully improve over time and be a benefit, and lastly, these are nice wide blocks with parking on both sides of the street and wide sidewalks so they feel nice and inviting and there's no drama on these blocks, very quiet. 

I consider it deceptive, unethical and risky from legal liability angle.

In that case, you would likely need several separate slabs, with some separation between them, versus a 200' wide slab with 8 garages. 

Aloha,Over the years I have worked with a pretty wide variety of Owners, large and small.

The gun disarms are the same from multiple angles etc.Just make sure your daughter understands this will be no holds barred in many cases.

Your questions cover a wide territory.

And house-hacking is the quickest way to build wealth in real estate from scratch.At the risk of sounding like an agent angling for your business, I would offer a word of caution using your friend, unless he or she really knows the nuances of what you're looking to do. 

I wish I had better news for you, but it is a wide spread problem from my experience.  

For example every week I see listings with bedrooms less than 7' wide.

I found the renovations costs to vary widely and a couple of contractors said it costs X amount of dollars with no line item estimates (red flag there).