Older houses (1890-1940)

[Ethan Kohler]

Looking for any insight into purchasing 100 year old houses as rentals. I imagine it would not be that much of an issue if everything has been updated/renovated, but is that not so simple in identifying the underlying condition and materials? Mainly electrical and plumbing. 

I'm wondering if, in general, it may be wise to steer clear of these properties for greater inherent risk. Unless maybe its in a historic downtown district with a lot of potential (which is not the case for what I'm finding). 

Appreciate any comments.