Once your net worth crosses into eight or nine figures, you’ll eventually hear the phrase “family office” thrown around as the obvious next step. It isn’t always the right one. Ultra high net worth wealth management firms and family offices solve overlapping problems, but they’re structured very differently, cost very differently, and make sense for different kinds of situations. Here’s how to actually tell them apart before you commit to either one.
What a Family Office Actually Is
A family office is a dedicated team, sometimes just a few people, sometimes dozens, whose only job is managing the financial and administrative life of one family or a small group of related families. That can include investment management, but it often extends into bill paying, property management, philanthropic coordination, and even hiring household staff.
Family offices come in two flavors: single-family offices, built exclusively for one family, and multi-family offices, which serve several unrelated wealthy families under one roof to share costs. Single-family offices are enormously expensive to run, often requiring $100 million or more in assets to justify the overhead of full-time staff, office space, and specialized technology. Multi-family offices bring the cost down by spreading it across several clients, which is why they’ve become a more common option than the fully private version most people picture.
What an Ultra High Net Worth Wealth Management Firm Actually Is
This kind of firm looks more like a traditional advisory relationship, just scaled up for extreme complexity. You work with a dedicated advisor or small team, but you’re one of many clients rather than the firm’s sole focus. The tradeoff is cost: you get specialized expertise without paying for a private staff of your own.
These firms typically bring deep experience in exactly the areas that matter at this level: concentrated stock positions, multi-generational trust structures, complex tax strategies, and access to private investments not available to the general public. If you want a clearer picture of how this compares to the other option often confused with it, it’s worth reading about how private banking differs from ultra high net worth wealth management, since private banks occupy a third, related category that gets lumped in here too.
Cost Is Usually Where the Decision Gets Made
Single-family offices routinely cost $1 million to $3 million a year to run once you account for salaries, technology, office space, and compliance. That only makes financial sense once your assets are large enough that the cost represents a tiny fraction of what you’re managing, which is why the $100 million threshold shows up so often in this conversation.
These firms, by contrast, usually charge a percentage of assets under management, often below 1% and dropping further as your assets grow. For most families below the nine-figure range, this ends up being dramatically cheaper than standing up a private office, while still providing access to the kind of specialized advisors who understand the specific problems that come with this level of wealth. Multi-family offices sit in between, typically charging a percentage fee similar to a wealth management firm but bundling in more administrative services.
There’s also a middle-ground cost to consider that people often overlook: the opportunity cost of your own time. Running even a modest single-family office means someone in the family, often the primary wealth holder, ends up spending hours every month overseeing staff, reviewing invoices, and making decisions that a well-chosen advisory firm would otherwise handle as part of its standard service. For families who value their time as much as their money, that’s a real cost worth weighing alongside the dollar figures.
Which One Actually Fits Your Situation
The honest answer depends less on your net worth alone and more on how complex your life actually is. A family with $150 million spread across a diversified portfolio and a couple of trusts may be perfectly well served by a strong ultra high net worth wealth management firm. A family with $80 million but multiple operating businesses, real estate across several states, and a dozen family members involved in decision-making might actually need the dedicated staff a multi-family office provides, even below the usual asset threshold.
It also helps to look at how firms across the wealth management spectrum, including those serving high-net-worth clients more broadly, structure their service tiers, since many wealth management firms now offer a “family office lite” tier bridging the gap between the two options rather than forcing an all-or-nothing choice.
A Third Option Worth Knowing About
Some families choose a hybrid approach: an independent wealth management firm handling investment strategy and tax planning, paired with a part-time bookkeeper or administrator for the day-to-day logistics a full family office would otherwise cover. This can work well for families in the $30 million to $80 million range who need more than a standard advisory relationship but aren’t ready for the overhead of a full office.
This hybrid path also tends to suit families going through a transition, like the years right after selling a business, when the complexity of managing a sudden liquidity event is high but it’s still too early to know whether that complexity will be permanent. Starting with a flexible wealth management relationship and adding administrative support piece by piece is often easier to unwind or scale up than committing to a full office before you know what your ongoing needs will actually look like.
Whichever structure you choose, the same advice applies: vet the team the same way you’d vet an independent financial advisor, checking credentials, asking about experience with families in your specific situation, and getting a clear answer on how fees actually work. Look, too, at the core qualities that separate a strong wealth advisor from a mediocre one, since those fundamentals matter just as much at this level as they do for any other client. At Totem Wealth Management, this kind of honest conversation upfront is usually what determines whether a relationship ends up working long term or falling apart within the first year.
The label matters less than the fit. A well-run relationship at this level can outperform a poorly run family office, and vice versa. Spend more time evaluating the people and the process than the category name on the door. Ask to speak with an existing client in a similar situation if the firm allows it, and pay close attention to how quickly and specifically they answer your harder questions during the first few conversations. That’s usually a better predictor of long-term satisfaction than any brochure or fee schedule.
FAQs
At what net worth does a family office actually make sense?
Single-family offices typically start making financial sense around $100 million in assets, given the overhead of full-time staff and infrastructure. Multi-family offices can work at somewhat lower levels since costs are shared across several client families.
Is a multi-family office the same as a wealth management firm?
They overlap significantly, but multi-family offices generally bundle in more administrative services, like bill paying or property management, alongside investment advice. A pure wealth management firm typically focuses on investments, tax, and estate planning without the broader lifestyle support.
How much does a single-family office cost to run each year?
Costs commonly range from $1 million to $3 million annually once you include salaries, technology, compliance, and office space. This is one reason most families below the very top tier of wealth choose a multi-family office or a specialized wealth management firm instead, since the fixed overhead simply doesn’t make sense until assets reach a certain scale.
Can I switch from a family office back to a wealth management firm?
Yes, and it happens more often than people expect, particularly when a family’s needs simplify over time or the cost of running a private office no longer makes sense. The transition is usually smoother than people fear, especially with an advisor experienced in this kind of shift.
Do ultra high net worth wealth management firms offer the same investment access as family offices?
Many do, including access to private equity, hedge funds, and other alternative investments that used to be exclusive to family offices. The gap between the two options has narrowed significantly over the past decade, as more independent firms have built out the infrastructure needed to source these opportunities for clients.
What questions should I ask before choosing between the two?
Ask about total annual cost, including all hidden fees, what services are actually included versus billed separately, and how the team would specifically handle a situation like yours. Get concrete answers, not general reassurances, before committing to either structure.
