How much does the year a house was built matter to you?

[Jonathan Shnoravorian]

Hi all,

I've been looking into some potential cash flowing rentals in various markets. I'm noticing several of these homes have been built between the years 1900-1930. Seeing how old these homes are, that personally scares me. My thought is that things I wouldn't even consider or know about could crap out and cost a fortune to replace or fix if I were to purchase homes this old (plumbing, structural, foundation, electrical, etc). Would like to hear some of your thoughts - How much weight do you hold to when your rental properties were built?