Introduction to the single family office: the complete guide
Built on Chapter 1 of The Single Family Office by Richard C. Wilson. Full chapter text: FamilyOffices.com.
A single family office is a private company that manages the wealth and affairs of one family. That simple definition hides a lot of variety. Some offices are two people coordinating outside advisors. Others are full investment firms with dozens of staff. All of them exist for the same reason: to give one family control and continuity over its wealth.
I have spent many years working with family offices and the founders who build them. This guide brings together the basics a family needs to understand before it builds an office, and the lessons I see repeated across many families. I avoid dated statistics on purpose, since counts and cost surveys age quickly.
Part 1: What a single family office is
A single family office serves one family only. It does not take outside clients or raise outside money. It can be set up as its own company, a trust structure, or a team inside the family business.
Its job is to look after everything the family owns and help the family make decisions together. That usually means investments first, then the many tasks that surround a large fortune.
A single family office differs from two close cousins:
The multi-family office. A firm that serves several families with shared staff. It costs less per family but gives each family less control.
The private bank or wealth manager. A firm that offers investment products and advice, usually with a sales relationship.
The key difference is loyalty. Staff of a single family office work for one family and no one else.
Part 2: Why families create one
Most offices begin at a turning point. The most common is the sale of a business, when years of wealth tied up in one company suddenly turn into cash. Another is the hand-off between generations, when heirs need a structure to manage what they inherit.
Families give several reasons for building an office. Control over how money is invested comes first. Privacy follows, with people who work only for them. They want coordination, so that tax and estate plans fit with investments. Continuity matters too, so the wealth survives the founder.
When new offices are set up, the goals families name most often include security and keeping the family business going, along with legacy and charity. Family unity sits high on that list too.
Part 3: When an office makes sense
People often ask for a wealth threshold. I avoid giving one. The right answer depends on complexity and goals more than on the size of the fortune.
A family with one simple portfolio may be well served by a private bank. A family with an operating company, several homes, private deals and a foundation needs far more coordination, even at the same total wealth.
The real tests are complexity and control. Add to those any plans for direct investing, the family's need for privacy, and the number of generations involved. A family that scores high on several of these is a strong candidate.
Part 4: The main models
Families have more choices than ever. I see four broad models.
The full office. A dedicated team with in-house investment staff, used by the largest and most complex families.
The lean office. One or two people who coordinate outside advisors. This model gives much of the control of a full office at a fraction of the cost.
The embedded office. Staff inside the family business who also handle personal wealth. It is cheap and fast but mixes business and family priorities.
The multi-family office. A shared platform, often the right fit for families with less complexity.
Families often move between models over time. A common path is embedded, then lean, then full, as wealth and complexity grow.
Part 5: The core services
Whatever an office starts with, most end up handling five core services.
Investment management. Setting policy, choosing managers and making direct investments.
Accounting and reporting. Showing everything the family owns in one place. This is often the most valued service of all.
Tax and estate planning. Coordinating attorneys and tax advisors so plans fit together.
Risk management. Insurance and cybersecurity, plus physical safety.
Family services and governance. Bill pay and household support, plus family meetings and next-generation education.
No office does all of this alone. Keep trust-heavy work in house and outsource specialist tasks.
Part 6: The people
A family office is only as strong as its team. The lead executive matters most. Many offices start with a CFO-type leader who can run reporting and coordinate advisors. As the office grows, it may add a chief investment officer and specialists in direct deals or tax.
Hiring is hard. The industry is small and private, and the best people rarely advertise. Families hire on trust, which favors people they know. Smart families widen their search, define each role clearly and offer pay with long-term upside tied to results.
Part 7: Governance
Governance means agreeing who decides what. In a young office, the founder usually decides everything. That works until a spouse wants a voice, children grow up, or a strong executive needs authority.
Writing down decision rules early prevents painful conflict later. Many families create a family compass with a mission and values, plus a governance document that sets out committees and voting. At a recent Family Office Club mastermind, one speaker described how a family that combined a written family constitution with coordinated tax and succession planning ahead of a business sale was able to cut its tax bill sharply. Planning before the sale, not after, made the difference.
Part 8: Investing like a family office
Family offices have one big advantage over most investors: patience. They can hold for decades. Many also understand operating businesses deeply. These two strengths explain why so many families invest directly in private companies, co-invest beside funds, or form clubs with other families.
The discipline matters. The families that do well stay inside their circle of competence. They do serious diligence; my own rule is at least 40 hours before committing. Good families verify that a sponsor really has money in the deal and ask for the full debt schedule. They stage their money and plan the exit before they buy.
Part 9: Mistakes to avoid in the first year
The first year sets habits that last. The mistakes I see most often are:
- Hiring a big name before defining the job.
- Investing too fast after a liquidity event.
- Running without consolidated reporting.
- Skipping governance and leaving the family out.
- Underpaying the lead executive.
- Mixing business and personal costs.
- Ignoring cybersecurity and payment fraud.
- Building too large an office before the need is proven.
A simple plan helps. In the first three months, protect the capital, hire a trusted lead and set up reporting. Over the next few months, write the investment policy and governance rules. Then begin investing in measured steps.
Part 10: The estate plan comes alive
Before an office exists, an estate plan is often a set of papers in an attorney's file. An office turns it into a living plan. It checks that assets sit in the right trusts and keeps trust records clean. It flags life events that call for review. It also keeps a continuity plan for the day the founder can no longer act.
Part 11: Privacy and security
Wealthy families are targets. Fake payment requests are the most common and costly attack. Every office needs two-step logins and phone verification of payment changes, plus two-person approval for large wires. Family members need help protecting their homes and social media as well.
Privacy and visibility can coexist. Many offices now have a professional public face to attract deals and talent, while family members stay out of view.
Part 12: What capital raisers should know
For people raising money, every single family office is different. Learn how the family made its money, since that predicts what it will invest in. Find out who really decides: the founder, an executive or a committee. Match the office's investment policy. And build trust over years, because families invest with people they know.
Part 13: The road ahead
The family office industry is still young and growing up fast. More offices open each year across every region. They are hiring more professionals, adopting technology and stepping into public view. Regulators are paying closer attention, and the next generation is bringing new priorities.
Families that build thoughtfully, with clear goals and good people plus written rules, will be well placed for the years ahead.
Part 14: Protecting the family in private deals
At a recent mastermind, the discussion of investor protection came back to a few practical checks that families can apply to any private deal. Verify that the sponsor really has its own money in the deal, instead of taking that claim on trust. Ask for a complete schedule of all debt, since hidden borrowing is a common source of losses. Make sure any collateral is properly secured and enforceable. Look hard at key-person risk, because many small companies depend on one leader. And have an attorney review every final agreement, even when AI tools helped with the early analysis.
These checks are simple, but they are often skipped when a deal comes from a trusted friend.
Your first steps
Write down the goals. What should the wealth do for the family over the next twenty years?
Map the complexity. List every entity and property.
Choose a model. Compare the four models side by side.
Hire a trusted lead. Define the role first.
Set up reporting. Before major new investments.
Write governance. Decide who decides, and bring the family in.
Join peers. Learn from families a few years ahead of you.
What to take from this
- A single family office serves one family with control and coordination.
- Complexity and goals matter more than a wealth threshold.
- Start lean, hire a trusted lead and set up reporting first.
- Write governance early and plan before any liquidity event.
This guide is general information, not legal, tax, or investment advice. Setting up a family office involves legal and tax decisions, so work with a qualified attorney and tax advisor.
Questions and answers
What is a single family office? A private company that manages the wealth and affairs of one family.
How is it different from a multi-family office? It serves only one family, which gives more control at higher cost.
When does a family need one? When complexity and the desire for control outweigh the cost, not at a fixed wealth level.
What should a new office do first? Protect capital, hire a trusted lead, set up reporting and write governance rules.