Meanwhile the property was deteriorating and tenants complained and got Dallas County Housing Authority involved.  

I would think it would deteriorate every month as the principal was paid off. 

.✅ Any home built before 1980, likely has cast iron or clay sewer lines which will deteriorate over time.These issues can be avoided.

You'll also want to ensure you have a good property manager to look after the upkeep of the property if you are not there to notice anything deteriorating or which may need attention.Creating an LLC in California could cost you a minimum tax of $800 every year.

Inspections may cost more upfront, but they can save you from significant headaches and unexpected expenses down the road.Negotiate Hard: Use inspection findings as leverage.If the HVAC is near the end of its life, negotiate a credit for its replacement.If the cast iron plumbing is deteriorating and needs replacement, ask for a credit as well.Sellers often prefer negotiating credits over doing the work themselves.To give you an example: I was once under contract for an old house priced at $170,000.

The seller will also be incentivized to extend their seller carry if there’s been no appreciation or the building has deteriorated during those 5 years. 

You'll also want to ensure you have a good property manager to look after the upkeep of the property if you are not there to notice anything deteriorating or which may need attention.Creating an LLC in California could cost you a minimum tax of $800 every year.

not to mention also they become zombie notes collateral will deteriorate pretty quickly if they are not winterized and secured ( which takes time and money)

The property may be deteriorating as the debtor delays and as his attorney stretches out initial court hearing (in BK court) for 6 months.  

Has a ten-year-old roof 3-tab, but the condition is more deteriorated compared to its relatively young age.