vacancies and reserves

[Troy Forney]

So I have heard of the 50% rule and also 40%.   I am currently working on my 3rd SF in less than a year and am closing on a 4th in a couple weeks.  I have so far completely rehabbed all properties.  I don't want a problem when I have tenants occupying the property.  I would rather do it while it is vacant.    What is every ones opinion on the amount I should be setting aside.  Occupancy is stable within these areas.