You will want to come and investigate the area ahead of time with a realtor.

This is NOT an attempt to solicit any jobs, but simply some ideas for jobs from which I could start investigating!

This way when something appears you can do a quick analysis and determine whether its worth your time to investigate further. 

On one memorable occasion I was investigating a 30+ unit commercial property.

It's not what it seems.Have fun researching and investigating!

I looked at a home to buy and hold and found a small puddle of water by the back wall of the basement. there was staining about 2" up from the floor that indicated it is a known issue. so I investigated outside and found the gutter overflowing at the exact time location outside. and the clogged downspout coming off the gutter in the middle of the house and not on an end. should I be overly concerned or would a proper gutter and drylock in the basement solve this issue. other then this the house would cash flow well with some updating. by the way this would be my first investment property.

For a small fee they will do a Investigation in deep.

I'll have to investigate that as well.

As you increase you number of mailings consider using www.PropertySkiptracer.comIt's an investigative & telemarketing service that will give you an advantage over the competition.

A private investigator can do wonders.