We own both a mortgage company and a real estate business, we do a ton of real estate investor deals, and, personally, my wife and I have flipped or built dozens of homes.

@Jeremy MahoneyThese are very personal questions that require more info to answer properly but below are my answers.

Personally as someone living in Old City the many developments along Christopher Columbus Blvd, and the capping project along I-95 near present great opportunities in the future for new shops and restaurants.What are your thoughts!

I personally would give all of my complaints and responses to prospective tenants, but whether that would protect you from liability I have no idea.might want to contact your local newspaper about the lack of city response. 

A great way to network and meet people in your local community is to attend in person meet ups.

I have a separate computer set up for QB that I don't use for personal stuff.

Sorry I couldn’t figure out how to reply to each person individually. 

Note ADU addition in a MF zoned area may be comped with a duplex but I personally think this is wrong as a SFH with ADU is not a duplex.- it is cheaper to buy a property with an existing ADU than adding one   In addition you would receive RE purchase financing.  

I'd think even where sub to or seller financing is most common, maybe the markets where it happens the most, maybe it achieves 2 or 3% max.The few times I see it in our area personally, is almost always on a 5-10 unit non-performing asset that someone can't get a loan on because of the debt coverage requirements.  

Quality work and fair rates.