Look up the nail patterns for coastal areas.

If there is a pattern of water damage losses it may indicate a problem with the plumbing work that was done when it was built.  

In reviewing some of the BP postings, I am noticing a pattern for potential fines and penalties directed toward rental properties in Cuyahoga County (Cleveland).

Otherwise, you will start a pattern that will be tough to break once you start.

@Brent Coombs yes it is - I understand - I guess I'm just trying to get a feel for when I see certain things or patterns when analyzing, what makes more sense to be done to the property.

The original vinyl was an off grey brick pattern and the new  vinyl that was replaced, under a table area where chairs had ripped the floor, was a greenish yellow flower pattern..It was awful. 

The $12 per month will make up in the long term if a claim ever has to be made.Sad to say the weather patterns are changing rapidly and we are in Tornado Alley, as well as we have pretty decent hail storms with great risks of repeat flooding in some areas.

@James Wise  Per your request.Coming out of the late 1800s most of the major west coast cities that we know and love like LA  SF  PDX SEATAC were all subdivided by the same engineering firms  at least SF and Portlandia were.. this led to land speculators in the day going out into the Western deserts and other remote areas.. buying what were large land holdings , Spanish land grants and other lands that were not govmit owned.. then in the day you could simply create massive subdivisions buy doing basic surveys off of the base and meridian lines.. which all of the west is surveyed off of... this is called section land.then create these massive tracks of lots.. some were like up in the apple valley, Lancaster,  Barstow type areas mainly 5 acre tracts.. and were done on a grid pattern.. streets in ( mapped but not built)  and of course spiraled out of a small little town off the railroad track or the few roads that existed in those days.. you took your map and recorded it at the county, county was happy they just got 5 thousand lots they could send out tax bills on..

Of course if this was a pattern it would be obvious.

So I tried following that same pattern by trying not to have much contact with tenants or potential tenants and just having my assistant be the go between for everything.