By: Kenny Tavares, Senior Consultant
Single family offices (SFOs) have become increasingly important in managing the wealth of ultra-high-net-worth families. These entities are designed to centralize financial, administrative, and governance functions, ensuring that family wealth is preserved and strategically deployed across generations. The rise in interest surrounding SFOs is not coincidental – it reflects broader trends in wealth accumulation, generational transitions, and the increasing complexity of managing substantial assets.
By some estimates, there are between 10,000 and 20,000 family offices globally, and this number continues to grow. This expansion is fueled by factors such as wealth transfer, succession planning, and the need for bespoke financial solutions that traditional institutions often cannot provide.
As a prospect researcher, it is always helpful to find evidence of a family office, but what does it really tell us about a prospect’s wealth? What type of family office do they have? What type of services do they offer? If you are like me, you have heard many estimates about the amount of wealth needed to start an office; Are these statistics telling us the real story? An examination of data in J.P. Morgan Private Bank’s 2024 Global Family Office Report tells us a more complex story. Here are a few interesting facts to consider when developing a wealth estimate.
The average assets under supervision at a single family office (SFO) in the United States in $767 million and the average net worth of those families is $1.4 billion, but…
The median assets under management in the US is $476 million and the median net worth of those families is $626 million according to J.P. Morgan. Additionally, 38% of US-based SFOs surveyed were founded by families with net worth of $500 million or less; 25% of them were managing assets of $250 million or less. Knowing that a little more than half of SFOs have assets less than $500 million. This is corroborated by Citi Wealth’s 2025 Global Family Office Report, which states that 47% of North America’s SFOs have assets of $500 million or less. While trends continue to point toward larger SFOs, there are still a significant number of smaller operations.
The average operating cost for a SFO in the U.S is $3.4 million, but…
The median operating cost is $1.4 million according to J.P. Morgan. 33% of these offices had costs of less than $1 million, including 59% of offices with assets between $50 million and $500 million. These expenses cover salaries, technology, compliance, and outsourced services. The difference between the mean and median are probably due to the following factors:
The average number of employees for a SFO in the U.S. is 11.4, but…
The median employee count is 2.8. 53% of SFOs have five or fewer employees; 71% gave 10 or fewer employees, including 90% of offices with assets between $50 million and $500 million. Additionally, J.P. Morgan reports only 7% of US SFOs employ six or more executives; 79% employ 3 or less executives. Furthermore, Bank of America’s 2024 Family Office Study indicates that 60% of SFOs report that their founding assets originated from a family business and half of those share employees with the family business. Many of these SFOs are relying on services to accomplish their goals.
The large majority of SFO offer financial asset management; professional services such as accounting and taxes, legal services and estate planning; administration services; insurance management; family governance and succession planning; and philanthropic services, but…
According to J.P. Morgan, 37% of U.S.-based SFOs outsource investment management services to third-party providers. 50% or more of the family offices that offer the following services rely on external providers instead of building capabilities in-house: legal services; accounting and taxes; trading and market execution; estate planning; investment banking; services and cybersecurity services; and matrimonial and family planning. 93% of SFOs plan to maintain or increase their reliance on outsourcing services to expand their services and manage expenses.
This behavior, which resembles that of outsourced family offices or hybrid offices, demonstrates the difficulty in defining family offices. Often, researchers lack the information needed to assume how these organizations function.
So, what does the existence of a family office tell us about a prospect’s wealth?
The numbers above show us that without additional information, we can only make general assumptions about family offices and that, at a minimum, the existence of a family office confirms the following:
- The prospect is likely a high net worth individual (investable assets of $30 million or more).
- The prospect experienced a business sale or liquidity event that needed to be managed in the family’s interest. A record of this event can tell us more about the family office’s assets.
- Any indication that the prospect has a SFO could increase estimated assets to a baseline of $100 million.
- While difficult to determine, any indicator as to the number of employees or executives at the single family office could go far in determining the size and wealth of the organization.
- Keep in mind that a single family office is not likely to hold all of a family’s assets.
A single family offices’ existence signals significant financial strength, but understanding their scale and structure requires additional context. As wealth management becomes increasingly complex, SFOs will continue to evolve, balancing in-house expertise with outsourced services to meet the demands of governance, investment, and legacy planning. Recognizing these dynamics is essential for accurately assessing their role and implications in today’s philanthropic landscape.






Let’s channel Paul Simon for a moment and talk about shoes. That’s probably not the lead-in that you expect from a blog post that’s supposed to be about philanthropy. But, I promise you it is!









