The one thing that has kept me sturdy and diligent is treating every encounter as a business transactions.

The HOA president was walking her dog in my little culdesac, and as I went out to greet her, her little canine friend pulled loose of his leash and bit me in the shin!

The boxes seem pretty sturdy and one option is just replace the doors and drawers.

If you have a solid basis for each assumption, then your analysis will have a sturdy foundation.

The existing windows are sturdy and durable so it wasn’t wear and tear. 

I only discuss things once with the tenant and if there are any further repeated issues I go straight to the section 8 advocate for that tenant.Make sure you have clearly stated rules in to your lease - tenant changes smoke alarms batteries, no pulling down smoke detectors, dogs on leash, no unauthorized overnight stays more that three days, where to park, etc...Finally, any rules for the section 8 tenant must be enforced for all tenants.

There are a ton of empty lots across Detroit, which seem in theory like "easy" places to pop up a pre-fab SFH or small multi.I did some preliminary research here and via Google and see that most people's experiences seem pretty positive with key draws being the cost = less than or equal to standard construction, materials being eco-friendly and sturdy, shorter construction time, similar appraisal value, to name a few.My questions:Can anyone share any experiences specific to Detroit or the surrounding area with regards to permitting or legal pitfalls to avoid or hurdles to jump over?

We have found they are not as sturdy as a house, but if someone is not rough on them they hold up fine. 

And maybe something sturdy like a post like that yellow sign in the picture you posted?

NOW, last week HOA sent a letter saying tenant is walking dog without leash and neighbor complained of late night noise/nuisance.