Cash reserves per unit

[Ben Rasche]

Hey guys and gals,

I just purchased 2 single family houses and a duplex to go along with another duplex I currently own.  I'm just curious how much cash I should try to keep in reserves at all times in order to deal with any major repairs/vacancies that may arise. I haven't heard anyone talk about a good guideline for this (i.e., keep X amount per unit in reserves at all times).  What are your thoughts??

Thanks in advance!!
Ben