I'm posting this just because . . . if someone wanted to know how long it takes a dead Arbutus tree to rot to the point of disintegration, there would likely not be much definitive information online. Well, I'm here to tell you. :-) 50 years. That's how long ago our house was built and the Arbutus would have to have been taken down then to allow for construction. Such a tragedy though because the tree trunk was at least 6 feet across at that point. If it were me, I'd have chosen a different site for the house even if the tree blocked the view.