Most title companies will never give title insurance on properties bought at tax auctions.

Now I have to battle the insurance companies.

Are there any insurance policies or providers you recommend for this unique use case?

As I mentioned above, the risk of being sued, found guilty, and fined more than your insurance will cover is almost non-existent. 

I believe solid insurance and a good umbrella policy will suffice.

I'm Tom Pappas from Victoria TX, specializing in custom container homes.

@Nathan Frost uhm, not sure you understand Detroit market.Motion lights & cameras may work half the time at best.Too many insurance claims will get you cancelled and eventually black-balled.But, what do we know after 24 years in the Detroit market...

They get paid to do it, and you could be the next customer. 

You need to think about not just the potential income but also the potential problems such as city ordinances, state law, insurance, potential eviction issues, etc.

I have already shopped insurance, and the sellers are providing $5k towards prepaids/closing costs.