Del Cerro, El Cerrito, parts of Encanto, parts of Lemon Grove, La Mesa, parts of Golden Hill etc are also possible contenders for upsides in value.  

I am curious about all aspects of what I am learning here: house-hacking and flipping are strong contenders for me as a start, but I am also interested in apartment and commercial developments which seem to me like the real pathway in Brooklyn atm.

So we reach out to the seller who contended that since the tenants abandoned the property, they never received that months rent so there was no rent to prorate and credit back to us.

I know this sounds crazy, and there is some great advice here, but talk to each tenant individually if you can and find out the deal.If the units are in terrible shape, you're not going to be able to raise the rent much or get someone in, now you have vacancy and rehab to contend with.If the units are pristine, maybe the tenants know they're paying under market value.

A commercial agent can get you set-up with the right materials and partners to make you a serious contender in acquiring these properties. 

However, we did have to contend with the COVID-19 Pandemic...Once under contract and observing the COVID-19 impacts unfold, our team considered finding a way to mitigate the property vacancy as a contingency to continue with closing.

The way it was, when I sold the property, I only had two separate items to contend with.

However, it is survival of the fittest.If it is a great deal, there are a dozen to over forty offers (no lie) if it is on the MLS.Very rare to get a pocket listing or off market property without having to contend with other investors. 

I recommend finance as a strong contender so you learn the basics of Excel and become comfortable building complex models.

We do have to contend with forward 704(c) allocations however due to the disparity of the original holder's tax basis in the assets vs FMV at the time of formation of the partnership.You'll want to speak with your attorney and CPA.