And that is true, but that is also sort of like saying "to mitigate the risk of investing in Apple, and relying on their decisions, I will start my own tech company" (okay, that is a bit extreme, but you get the idea).  

Here’s a refined version of your message that maintains your original questions and concerns while improving clarity and flow:Hello,Since January, I haven't received the full rental payment from the property management company.

Common concerns in pre-1940s buildings include outdated plumbing, old electrical systems, and structural issues that could be costly to bring up to modern standards.

Do you think the rising taxes might eventually become a bigger concern, or do you feel the benefits will continue to outweigh the costs? 

Verifying last 2 years of rental history and income extremely important to find the “best of the worst”.Make sure you understand the Class of properties you are looking at and the corresponding results to expect.The City of Detroit has 183 Neighborhoods we’ve analyzed.PM us if you’d like to discuss this logical approach in greater detail!

I am also concerned about possible mold in the basement.What should I do?

I’ve been looking into coastal options and was initially considering Florida, but the taxes have been concerns. 

My concern for you is that it appears that if the owner comes back, they only have to pay the bid amount + costs, not what you paid for the broker.

Basically the concern is they tie up the property, collect enough rents to make a little bit, and then just default.

My concern is whether the city could deny permits for these modifications, such as removing walls or converting a garage, or if they are mainly just concerned with safety and habitability.