How long can a Florida Estate Formal Probate take? Obviously it depends on many factors including the complexity of estate documents , quantity of assets, numbers of heirs and of course estate planning in general. Florida Probate attorneys know that probate can take a long time, but you may be wondering just how long. A case out of the Georgia Court of Appeals this week shows the downside of making all of your five children personal representatives of your estate: a potential for thirty years of probate.