If your household income drops because you or your spouse loses your job, you'll just manage your budget and make some changes and not much will happen. 

You will need property insurance to cover your building or structure, then you need coverage to protect the household items you might provide to tenants and finally you need to protect your own personal property in your occupied area.  

I'm currently grinding 50+ hours a week as a nanny/household manager saving for my next down payment.

That is why the plurality of dog bite victims are owners or household members that have no signs of animal neglect, abuse or mistreatment of the dog.

Let's say the girlfriend doesn't work, or makes minimal income--do you allow them to move in as long as their total "household" income meets the minimum standards, or do you require them to both earn enough income on their own to quality?

It would need to be labeled as "Mixed use" or "Residential multi-household district".

I called section 8, and they are telling me that I have to wait until they decide who will take over her voucher as head of household (since the deceased had a son who was a minor on the lease).

My husband is a great co-parent, and we share household and child responsibilities.  

I wasn't brought up in a household of entrepreneurs or real estate investors.

My wife and I can not maintain two separate house holds and so she and he brother decided to let the house go into foreclosure.