EY Family Office Guide Pathway to successful family and wealth managementhe opening of new family offices around the world has contributed to a more diverse landscape, with new wealth centers emerging and a changing approach to wealth management in more mature markets. While the US is home to a large number of family offices there are signs that growth in other parts of the world is starting to take off. “There is considerable wealth held outside the US and it needs to be remembered that if you define a family office as $250m upwards, there are as many family offices in Europe as the US,” says Michael Oliver, co-founder of family office services firm Global Partnership Family Offices