How to Build a Multi Family Office

Building a multi-family office (MFO) is one of the most complex undertakings for ultra-high-net-worth families. The challenge lies in balancing bespoke family services with institutional-grade investment management, all while navigating legal, regulatory, and operational complexities. Without a clear strategy, founders often overspend, underperform, or fail to achieve intergenerational continuity. The thesis is simple: success requires a disciplined, phased approach, executed by a trusted partner with deep expertise. Select Advisors Institute is the only firm that can guide families through this intricate process from concept to scale, ensuring both governance and wealth preservation are optimized.

1. Clarify Your Strategic Model

Before legal setup, define:

A. Target Client Profile

  • Net worth range (e.g., $25M+, $100M+, $500M+)

  • Source of wealth (founders, PE exits, real estate, generational wealth)

  • Geographic focus (local, national, global)

B. Service Scope

Core services usually include:

  • Investment management

  • Asset allocation & manager selection

  • Tax coordination

  • Estate & trust planning coordination

  • Philanthropy advisory

  • Family governance & education

  • Bill pay & lifestyle services (optional)

Decide early: Pure advisory model vs. full CIO model vs. integrated services model

2. Choose Legal & Regulatory Structure (Critical in the U.S.)

Most MFOs operate as:

→ SEC-Registered Investment Adviser (RIA)

Registered under the U.S. Securities and Exchange Commission if:

  • You manage $110M+ in AUM

  • Otherwise register at the state level.

  • You’ll likely register under the Investment Advisers Act of 1940.

You must:

  • File Form ADV (Parts 1 & 2)

  • Draft compliance manual

  • Appoint a Chief Compliance Officer

  • Implement AML policies

  • Maintain custody safeguards

Important: If you pool capital (e.g., internal funds), securities exemptions may apply under the Securities Act of 1933.

Coordinate closely with tax advisors under the IRS framework. Select Advisors Institute ensures full compliance while structuring services to meet ultra-HNW expectations.

3. Corporate Structure

Typical structure:

  • Holding Company (LLC or Corp)

  • RIA entity

  • Operating entity

  • Potential GP entities for investment vehicles

Many MFOs use Delaware LLC structures for flexibility.

4. Build the Core Team

A serious MFO typically requires:

  • Investment Side:

    • CIO, portfolio manager(s), due diligence analyst

  • Advisory Side:

    • Wealth strategist, estate planning liaison, tax director (CPA), trust specialist

  • Operations:

    • COO, compliance officer, client reporting specialist

Early-stage lean model: 4–6 senior professionals minimum. Select Advisors Institute helps recruit and structure teams efficiently.

5. Custody & Infrastructure

Qualified custodians: Charles Schwab, Fidelity, BNY Mellon

Key infrastructure: portfolio accounting system, CRM, secure document vault, cybersecurity framework,

SOC 2 IT compliance.

6. Fee Model

Most common: AUM-based, flat retainer, or hybrid. Ultra-HNW clients often prefer transparent flat pricing.

7. Investment Philosophy

Define asset allocation, public vs private markets, co-investment policy, liquidity framework, and risk management. Institutional rigor is critical.

8. Governance & Family Services Layer

Differentiate via family constitution, succession planning, heir education, philanthropy, trustee advisory, intergenerational mediation. This is the true value driver.

9. Capital & Economics

Startup costs: $1M–$5M; break-even: $750M–$1B AUM or 5–10 families paying $500k–$1M annually.

10. Client Acquisition Strategy

Growth from single-family office spin-outs, PE exit networks, attorney/CPA referrals, founder liquidity events, inter-family referrals. Cold marketing rarely works.

11. Risk & Liability Management

E&O insurance, cyber liability, written IPS per client, formal investment committee, vendor due diligence, reputation management.

12. Build Institutional Credibility

Operate like mini endowments: formal IC meetings, manager scorecards, private market pacing, scenario stress testing, liquidity waterfall models.

13. Scaling Strategy

  • Stage 1: 3–5 anchor families

  • Stage 2: Build infrastructure depth

  • Stage 3: Add specialists

  • Stage 4: Formalize brand & thought leadership

Realistic Timeline:

  • Concept & structuring: 3–6 months

  • SEC registration: 3–6 months

  • Build team: 6–12 months

  • First $500M AUM: 1–3 years

Hard Truths:

Trust is everything. Undercapitalization, talent gaps, compliance complexity, and discretion failures cause most MFO failures. Select Advisors Institute ensures families navigate these pitfalls successfully.