FHA loans require living in the home as your primary residence for 1 year after purchase.

These are typically interest only and require a payment of 1-4 points up front depending on your area and the PML.

Piling on...all occupants who are 18 or older (or legal emancipated minor) should absolutely be required to make application. 

You aren't required to offer a loan mod prior to foreclosure.

However, when seeking a non-recourse lender, I suggest starting by reaching out to lenders who specialize in working with self-directed IRAs, as they’re more likely to understand the requirements.

Acid washing when required is $500.

Fix and Flip -Requires a minimum down payment of 10% with 100% of the rehab financed. 

Rent control measures, burdensome employment regulations, and excessive administrative requirements exemplify this.

Generally there are multiple units for each "zone" if you will when I've seen them installed.Regarding your problem at hand, I personally would simply adjust your plan to move and make your initial plan to get the current issues resolved, while costly now, in the long run holding onto the unit will likely pay off. 

However, I typically like to make a distinction between my parents assets and my own, simply because doing so provides me more satisfaction when I succeed.