Start with decision rights. The most common source of friction in a growing family office is ambiguity about who decides what: which investments need principal approval, who can commit the office to spending, how operating businesses relate to the office itself. Writing these down is uncomfortable and clarifying in equal measure.

Build one view of the numbers. Offices that have grown through acquisition of entities, advisers and systems rarely have a single, reconciled view of liquidity, performance and exposure. Agreeing definitions across entities and rebuilding the month-end process around them is the foundation on which every other improvement rests.

Treat technology and security as fiduciary duties. Family offices are attractive targets and frequently under-protected. A pragmatic assessment of systems, access and incident readiness — followed by proportionate controls — is among the highest-return investments an office can make.

Keep governance proportionate. Borrowing the committee structures of a large institution rarely suits a family. The goal is enough structure to protect the family and its capital, and no more. Good governance in this context is light, clear and consistently applied.

Done well, professionalisation does not make a family office slower or more bureaucratic. It makes it more resilient — able to act quickly because the information is trusted, the decision path is clear and the risks are understood.