Single vs Multi-Family Office: Which Is Right for Your Family?
By Aurelius Advisory Team · Published 2026-06-10 · Updated 2026-07-07 · 6 min read
The short answer: A single family office (SFO) serves one family with dedicated staff — maximum control, customisation and privacy, at $1M+ a year. A multi-family office (MFO) shares institutional infrastructure across several families — typically 0.3%–1% of assets, viable from about $5M–$25M. The economic crossover sits around $50M–$100M in investable assets, but control preferences, operating businesses and staff appetite move the line in both directions.
The two models in one table
Strip away the marketing and the choice reduces to a handful of variables:
| Single family office | Multi-family office | |
|---|---|---|
| Families served | One, exclusively | Several, on shared platform |
| Typical fit | $50M–$100M+ investable | $5M–$50M (entry from ~$5M) |
| Annual cost | $1M–$10M+ (fixed) | 0.3%–1% of assets (variable) |
| Control & customisation | Total | High, within a framework |
| Privacy | Maximum — your staff only | Strong, but shared advisors |
| Time to operational | 2–6 months to build | Weeks to onboard |
| Licensing | Often exempt (own family only) | Regulated (DFSA, FINMA, MAS CMS) |
When the SFO genuinely wins
In our experience, three situations justify the fixed cost of a dedicated office: the family runs significant operating businesses that need coordination alongside the portfolio; the family has complexity that off-the-shelf platforms handle badly (multiple jurisdictions, concentrated positions, aircraft, art, litigation); or confidentiality requirements are absolute — some families will not accept any shared personnel, whatever the saving.
Notice what is not on that list: prestige. An office built as a status symbol is the most expensive business card in finance.
When the MFO is the smarter structure
Below roughly $50M, the MFO is not a compromise — it is the correct engineering. The family gets institutional custody, manager access, consolidated reporting and estate coordination immediately, without recruiting a CIO in a market where good ones cost $500k+ and take a year to find.
The MFO is also the right bridge structure. Several of our families operated within an MFO for five years, then lifted out into a dedicated office once assets, complexity and the next generation justified it — with governance and reporting habits already formed.
A decision framework that actually settles it
Score your family honestly against five questions:
- Assets: are investable assets clearly above $75M? (Below: MFO. Well above: continue.)
- Complexity: do you have 3+ jurisdictions, operating companies, or unusual asset classes that platforms serve badly?
- People: are you willing to recruit, pay and manage 5–10 senior professionals — including replacing them when they leave?
- Privacy: is 'no shared staff, ever' a hard constraint worth seven figures a year?
- Horizon: is this structure being built for grandchildren, not for this decade?
Frequently asked questions
What is the minimum for a multi-family office?
Most credible MFOs onboard from $5M–$25M in investable assets, with some premium platforms setting minimums at $50M. This is far below the $50M–$100M+ where a dedicated single family office becomes rational.
Do multi-family offices need a licence?
Yes — serving multiple unrelated families is regulated activity in every major jurisdiction: DFSA authorisation in the DIFC, portfolio-manager licensing under FinIA in Switzerland, and a CMS licence from MAS in Singapore.
Can I switch from an MFO to my own family office later?
Yes, and it is a common path: families build track record, reporting discipline and governance inside an MFO, then lift out into a dedicated SFO once scale justifies it. Structuring the MFO mandate with portability in mind makes the exit clean.
Is a virtual family office a real alternative?
For $20M–$75M families, a 'virtual' office — a lean core (sometimes one professional) orchestrating outsourced specialists — can capture much of the SFO's control at a fraction of the cost. It works only with strong coordination and clear reporting lines.