Single family office
A dedicated institution serving one family, with substantial capability brought in-house.
What is a Lean Family Office
The comparison
Lean, virtual, single or multi-family office, which one fits?
Different family-office models make different choices about what the family owns, what it outsources, where investment management sits, and who coordinates the whole. The right comparison is design, not status.
In one line each
The four models
Multi-family office
A firm serving several families through a shared team, often combining investment management, reporting and family-office services.
Virtual family office
A family-office function delivered substantially through external or remote providers. Ownership and portability depend on how the arrangement is designed.
Lean family office
A family-controlled operating system, explicit accountability for the whole, and specialist capability engaged deliberately rather than built into unnecessary headcount.
Side by side
The comparison
| Design question | Single FO | Multi-FO | Virtual FO | Lean FO |
|---|---|---|---|---|
| Centre of gravity | Dedicated institution | Outsourced family-office service | Outsourced / remote delivery | Family-controlled operating model |
| Coordination owner | Internal team | Provider | Varies | Family-appointed Operator |
| Core operating infrastructure | Family-controlled | Usually provider-led | Varies | Family-controlled |
| Specialist model | Internal + external | Shared provider team | Predominantly external | Deliberately fractional where appropriate |
| Headcount | Higher internal capability | Low family headcount | Low family headcount | Minimum viable internal core |
| Portability | Depends on design and documentation | Depends on provider | Depends on provider and architecture | Designed for family control and portability |
| Best fit | Family wants its own institution | Family wants a broad outsourced service | Family wants outsourced delivery | Family wants to own the operating model without building unnecessary institution |
Honestly
Where each model genuinely wins
01
The single family office wins on control
If the wealth is large enough, the complexity institutional, and the family wants complete control over people, systems and priorities, nothing beats a dedicated office. Full-time staff who work only for you, and answer only to you.
The trade: Substantial fixed people costs, plus premises and employment risk. Years to stand up properly. And a payroll the family now owns, with everything that implies when priorities change.
Right when: The family genuinely wants and can use dedicated internal capability across enough functions to justify running an institution of its own.
02
The multi-family office wins on breadth of service
An MFO gives access to institutional-grade investment management, reporting and a broad service menu without building any of it. For families whose primary need is investment management with some coordination attached, it works well.
The trade: The firm's economics are usually asset-based, so coordination sits alongside a commercial relationship rather than independent of it. And the systems, the reporting and the institutional memory belong to the firm. Move, and much of it is rebuilt from scratch.
Right when: The family wants a broad outsourced service and is comfortable with the provider playing a central role across several functions.
03
The virtual family office wins on speed
A VFO gives a family a functioning office quickly, without hiring anyone. The provider does the coordination, and for a family that wants the outcome without the build, that is genuinely valuable.
The trade: The coordination capability, the systems and the accumulated knowledge live with the provider. The family gets the output but not the machine, and dependency deepens over time rather than reducing.
Right when: The family wants substantial external delivery and has chosen a provider model whose ownership, data and portability terms fit its preferences.
04
The Lean Family Office wins on ownership
The LFO puts the coordination inside the family, one capable person, a documented system, fractional specialists around them, and every artefact belongs to the family: the record, the governance, the tools.
The trade: It requires someone in the seat and a real commitment to building the system. It is not a service that arrives fully formed. It is an office you build, and building it takes effort in year one.
Right when: The family wants institutional operating discipline, clear accountability and family-controlled infrastructure without making a large internal institution the default design.
The honest test
Who owns the system?
Ownership is one of the most important questions in the comparison, but it is not a claim that every provider model is unportable.
Ask: if this relationship ended next Tuesday, what would the family still control?
Look separately at:
- the underlying data
- the operating record
- governance documents
- workflow definitions
- access rights
- reporting history
- institutional memory
- the ability to appoint a different provider without rebuilding the office
A well-designed SFO, MFO or VFO can answer many of these questions well.
The Lean Family Office makes family control and portability explicit design requirements rather than assumptions.
The other side
When the lean model is the wrong answer
We would rather say this than have you discover it later.
When there is nobody to be in the seat
The lean model needs a coordination function. If no one will hold it, not the principal, not a hire, not an existing team member, a VFO or an MFO is the better answer.
When the family genuinely needs a larger internal institution
Some families need sustained, full-time internal capability across several functions: direct investing, treasury, operating businesses, governance, philanthropy, administration or family support. In that case, a dedicated team may be the more sensible design. Lean should not become an excuse to under-resource real work.
When the family wants it handled, not owned
Some principals genuinely do not want a system of their own. That is a legitimate preference, and the lean model will feel like homework.
When there is no complexity to coordinate
One jurisdiction, one entity, a straightforward portfolio: a good adviser is enough. Building an office would be overhead without benefit.
Questions
Questions
Can a family use more than one model?
Frequently. A family might keep an MFO for investment management while running a lean office for coordination and governance, which usually improves the MFO relationship, because someone on the family's side can finally see the whole picture.
Is a Lean Family Office just a small single family office?
No. An SFO is an institution with staff; a Lean Family Office is an architecture. The difference is that a lean office is designed to run on documentation rather than headcount, so it scales down without breaking.
What does each model actually cost?
Cost depends on scope, staffing, provider economics and the complexity of the work. A staffed SFO carries substantial fixed people costs. MFO and VFO economics vary by provider. A Lean Family Office is designed to keep fixed infrastructure proportionate by adding people and specialist capacity only when the work requires them.
How do we decide?
Start by assessing what your office actually needs. Complexity, existing resources, and how much of it is already documented usually make the answer obvious, and it is worth knowing before anyone sells you a model.
Start by assessing what you actually need.
Complexity, existing resources, and how much is already documented usually make the answer obvious, and it is worth knowing before anyone sells you a model.