Complete guide to what a family office is, the three types that exist, how it invests compared to private equity and venture capital, and why more middle-market companies in Spain are choosing this model as a strategic partner.
The term “family office” has gained prominence in recent years, but its meaning remains unclear to many business owners, advisors, and even financial professionals. This article explains what a family office is, the different types that exist, how they invest, and why this model is increasingly relevant for companies in the Spanish middle market.
A family office is a private organisation that manages the wealth, investments, and affairs of one or more wealthy families. Unlike a bank or an asset manager, a family office works exclusively in the interest of the family (or families) it serves, with no external clients, no public shareholders, and no obligation to report to regulators beyond what any private investment vehicle requires.
A single-family office manages the wealth of one family. It typically employs a dedicated team of investment professionals, legal and tax advisors, and administrative staff. SFOs are the most common type and range from small teams of three to five people to large organisations with fifty or more staff managing billions of euros.
Blue Mountain is a single-family office — we manage the investment activity of one family, investing our own capital exclusively.
A multi-family office serves multiple families, sharing costs and resources. MFOs offer a cost-efficient way for families with wealth below the threshold that justifies a full SFO (typically considered to be around 100-200 million euros) to access professional investment management, tax planning, and advisory services.
A virtual family office is a coordinated network of external advisors (lawyers, accountants, investment managers) who work together to serve a family’s needs without the overhead of a permanent office. This model is increasingly popular for families who want family office services without the fixed costs.
Family offices invest across the full spectrum of asset classes: public equities, fixed income, real estate, private equity (through funds), and — increasingly — direct private investment. It is this last category that is most relevant for middle-market companies.
Direct investment means that the family office acquires shares in a private company directly, without going through a fund. The family office conducts its own due diligence, negotiates the terms, and manages the investment actively.
Direct investment has grown dramatically among family offices in recent years. According to the UBS Global Family Office Report 2024, more than 45% of family offices worldwide engage in direct private investment, and this figure is growing.
The advantages for the company are significant: the investment comes with a longer time horizon (no fund lifecycle), aligned incentives (the investor’s own capital), lower cost of capital (no management fees or carry), and a more collaborative governance approach.
The comparison is inevitable and important. Both invest in private companies. But the similarities end there.
Source of capital. Family office: own wealth. Private equity: third-party institutional capital.
Horizon. Family office: indefinite. Private equity: 3-7 years.
Leverage. Family office: low or none. Private equity: typically 3-5x EBITDA.
Fees. Family office: none. Private equity: 2% management fee + 20% carry.
Exit obligation. Family office: none. Private equity: contractual.
Governance. Family office: collaborative, long-term. Private equity: assertive, time-bound.
Spain’s middle market has historically been underserved by patient capital. Large private equity funds focus on bigger deals. Venture capital focuses on tech startups. The companies in between — established family businesses with revenues of 10-100 million euros — have had limited options.
Family offices are filling this gap. They offer the capital, governance, and operational support that these companies need, with the patience and cultural sensitivity that their owners demand. As more Spanish family businesses face succession challenges, the relevance of the family office model will only grow.
A family office is not a fund, not a bank, and not a consultancy. It is a private investment vehicle that combines the flexibility of its own capital, the patience of a long-term horizon, and the alignment of investing its own money. For companies in the Spanish middle market, particularly those facing succession or growth challenges, a family office can be the ideal partner — one that brings capital, expertise, and a genuine commitment to the company’s long-term success.
By Dirk Manuel Martens Jiménez
By Dirk Manuel Martens Jiménez
By Dirk Manuel Martens Jiménez
If you wish to explore a potential collaboration or present an investment opportunity, we invite you to contact us. We guarantee absolute confidentiality in all our conversations.