The Tenant Class greatly impacts rental income stability and property maintenance/damage by tenants.Both Property Classand Tenant Class affect what type of contractors, handymen and property management companies will work on a property.If you buy & renovate a property in Class D area to Class A standards, what Tenant Class will rent it?

Relatively simple installation as no walls were damaged. 

A little extra diligence now can save you thousands in lost rent, damages, or legal fees later!

To your 3rd point, for a house hack, would you recommend finding a property that has some damage and needs an update to get it to its After Repair Value (ARV) or don’t worry about updating house hacks at all nor the concept of finding ARV for house hacks and just look for properties that are move in ready and can cash flow from day one?

No matter how well you plan, surprises will happen—hidden water damage, electrical that’s not up to code, or even just material price hikes.

Properly maintains/doesn't damage the property.3.

Destroying the house calling board of health for tenant damages and literally every little thing creates huge expenses.

When he came to me, she was three months behind on rent, and her unauthorized dogs, cats, and roommates had caused about $4000 in damages.

The owner of the unit is getting more revenue and has less risk (less risk of eviction, damages, collections, etc). 

On the roof is there hail damage where it can be insurance claim worthy?