The number of single-family offices is expected to rise from 8,000 to 10,720 by 2030, according to Deloitte Private. : A version of this article first appeared in CNBC's Inside Wealth newsletter with Robert Frank, a weekly guide to the high-net-worth investor and consumer. Sign up to receive future editions, straight to your inbox. Family offices are expected to add over $2 trillion in assets by 2030, as an increase in wealth concentration and a revolution in wealth management drive rapid growth in new family offices.