I'd love to get thoughts on whether this situation warrants a renegotiation of my current deal.2 Years ago I put a commercial building under contract for $720,000. 

In the same way economics dictate you cannot have a slum SFH on a property that warrants a new 20 story tower, there will be a new standard established that will rely on data.

She had warrants , he say her car tags were expired , and no insurance , then he finds a crack pipe on the passenger seat , and asks me "since she shoved you do you wish to press assault charges ?"  

If they have done things like this before there may be outstanding judgements and warrants so there may be people very interested in knowing where these people are right now. 

At that time, if you believe a rent credit is warranted, you'll provide one.

I would not recommend looking into them unless your capital gains are very large, warranting the hassle and cost of those advanced solutions.

Re: whether it's a good time to buy, I posted some extended thoughts on that topic yesterday when someone asked about Investors on RI.I think it's generally always a good idea to "house hack" (buy a multi family and live in one of the units), because you have to live somewhere and it's a great way to ease into real estate and owning property / landlording.As far as buying purely investment property, as I said in that other post, I think some caution is warranted now.

As a side note just take care of your warrants, pay your tickets, appear in court, do what you gotta do.

Do you know if the HOA is warrantable?

@Ley Nezifort some of those claims are warranted in specific pockets of the city, namely south philly.