Depends on where the water comes from.I have a perimeter drain with sump pump and normally that's enough except if you have a power outage and no backup power.

If you consider the fact that most likely after a long term resident leaves you have to invest some money to freshen the place back up and likely have a month or so of vacancy, which very quickly can offset any gains you may experience.

Instead of vetting plumbers, electricians, cleaners, handymen and more, you just vet a single property management company (and another one as backup).  

Still to this day we have had challenges on developing the 5 storefronts back up. 

Property does back up on a busy road (buyer using this as leverage). 

The back up/resistance occurs at the street. 

There's nothing I can do to stop it, so the best I can do is try and prepare for it without breaking the bank, as well as having a few backup plans for the back up plans.

@Jay Hinrichs No, the company I was referring to is just a general debt collector, who does email/mails/calls to collect debt if I provide them the documents to back up my claim (in this case I have promissory note, deed of trust, and a personal guaranty).

You'll see a sharp dip in 2007 into early 2008 before reverting back up to the mean.

It was that sale that I decided to fire back up my NMLS license and just lend all these people money.. and make good returns but consistent and my days of hitting homeruns at the foreclosure auctions were over..