Perhaps updated plumbing, foundation, roofing, insulation, electrical service panel, windows, etc. whereas you may find a 1960 or newer property that has single pane aluminum windows, overloaded electrical service panel, deteriorated roof, galvanized and corroded water lines, etc.

We had a bunch of other units under renovation so we thought we'd just do basic maintenance until we could get it reno'd. hahahahaha.When we bought the building one of the tenants that seemed pretty normal was moving out due to a deteriorating financial situation; I told her we were going to get the place cleaned up and make improvements and she said something that really made me think.

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 would cost you a minimum tax of $800 every year.

However, the original foam head rests just deteriorated beyond repair. 

The day of reckoning will come when the dollar deteriorates from the printing presses not from politicians unable to pass more spending. 

A rapidly deteriorating building on cheap land for a very low sales price.Commercial size apartment building, purchased for peanuts, kind of a “fire sale,” due to seller’s need to get out ASAP due to family issues.

You are not putting them out on the street they are doing that themselves by violating the lease, not paying rent on time, and deteriorating your property.

It started out all good, but deteriorated over time.

When you starve your HOA of money, it WILL cause your property to deteriorate as corners constantly get cut and bandaids get used instead of real fixes. 

We already have some deferred maintenance around the property, and I feel that once it becomes a "rental community" that the property could deteriorate quickly.