It's all math. 

Messy, but usually effective.So, I would consider the possible outcomes and the probability of each and do the math to come up with an expected value for the cost of the repair.

There is no mention of the loan balance, just the rate and payment (I did the math on $513 / mo - if it's principal and interest only the loan balance would be $92,900 - so I suspect you're quoting a PITI payment). 

I guess it always comes to doing our homework, doesn't it?

Some people are surprised by what they learn when they do the math.  

But it becomes a simple math equation:  $$/month income to replace divided by the average dollars per month per unit owned will equal the number of units you need to own to replace that income and get toward FIRE.  

If you don't do the homework, you will give them the impression you may not be up to doing the homework with real estate investing.

Look, Mark was pointing out that it's self-inflicted injury not some mysterious market factor, that's just reality of the math.

Areas like Fountain Square, Bates-Hendricks, and Irvington have seen revitalization, but you’ll want to do your homework on specific blocks.

Do the math:1 - If you keep it as a rental, how long would it take for the CF to equal the profit if you sold it now?