Single vs Multi-Family Office
How to choose between a single-family office built around one family and a multi-family office that shares cost and infrastructure across several, including when it makes sense to move from one to the other.
At a glance
How SFOs and MFOs actually differ
Single-family office (SFO)
Built around one family's needs exclusively. Full control and customisation, but the fixed costs only make sense above a certain asset and complexity threshold.
Single-family office vs multi-family office: what's the real difference?
The choice between a single-family office and a multi-family office usually comes down to scale and control. A single-family office (SFO) is built exclusively around one family, giving full control over staffing, investment approach and privacy, but the fixed running costs only make sense once a family's assets and complexity cross a certain threshold. A multi-family office (MFO) shares staff, technology and overhead across several families, lowering the entry cost and the time to get started in exchange for less customisation and some shared decision-making. What an SFO actually costs to run is usually the number that settles the question.
Many families don't choose once and stay there: a family that starts with a multi-family office or a wealth manager often moves to a single-family office as wealth and complexity grow, and some families run a hybrid, several single-family offices sharing infrastructure while keeping governance separate. For more on how these fit into the broader set of family office structures, including the legal entities underneath each model, see our structure hub.

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Alternative Assets
Alternative assets are non-traditional holdings, such as private equity, real estate, and digital assets, used by family offices to diversify and build resilient portfolios.
Alternative Investments
Alternative investments are non-traditional strategies, like private equity, hedge funds, and real assets, used by family offices to diversify portfolios and enhance returns.
Anti-Money Laundering (AML)
Regulations and procedures intended to prevent criminals from disguising illegally obtained funds as legitimate income.
Asset Allocation
The process of distributing investments among various asset classes to balance risk and reward according to an individual’s goals. The process of dividing a portfolio among different asset classes, such as stocks, bonds, and real estate.
Asset Management
The direction of a client’s cash and securities by a financial services company, usually an investment bank.
Assets Under Administration (AUA)
The total value of assets managed for clients, including reporting and safekeeping, but without direct investment authority.
Families usually move when the cost of a dedicated office outweighs the control benefit, when next-generation wealth is split across more households, or when they need broader specialist coverage than a small SFO can staff. An MFO or hybrid model can keep governance quality while sharing infrastructure and specialists across several families.
A hybrid or multi-single family office keeps a dedicated team for one family on sensitive or bespoke work, while sharing selected services — technology, research, reporting, or specialised staff — with other families or an MFO platform. Families use it when full SFO cost is too high but they still want control over core decisions and confidentiality.
While MFOs often charge higher fees or minimums, they also deliver broader services under one roof. The total cost may be comparable when factoring in legal, tax, and estate planning services that would otherwise be outsourced.
A single family office serves one family and offers full control, privacy and bespoke service, but at a higher cost carried by that one family. A multi-family office serves several unrelated families and shares its costs and infrastructure across them, making sophisticated services more affordable. The trade-off is less control and customisation in exchange for economies of scale and greater cost efficiency.
A single family office typically costs between US$1 million and US$5 million a year, with most mid-sized offices in the US$1 million to US$3 million range. Staffing is the biggest driver, followed by technology and governance or compliance costs. As a rough guide, running costs often equate to around 1% of assets under management.
Not sure whether an SFO or MFO is right for your family?
Connect with our team to talk through cost, control and complexity, and work out which structure, or combination, fits where your family is today, with access to on-demand knowledge, services and our global network of more than 10K users.
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