
Fifty to eighty feet tall with an open-grown spread that can approach 80-100 ft, and lifespans routinely 200-300 years or more. That spread is the cost driver — removal sits at the top of the bracket because of the reach, the weight of the wood, and the fact that nearly all of them are within striking distance of a house.
White oak forms a genuine deep taproot as a seedling, which is why field-grown stock is hard to transplant, but the mature working root system is a wide shallow plate extending well past the dripline. This is the field-critical fact on this species: it is the least tolerant tree on this list of compaction, grade change, and trenching — four to six inches of fill, a new drive, or a utility trench inside the dripline is a slow death sentence the tree will not show for three to eight years.