Major Domus Pty. Ltd. is an Australia-based multi-family office that provides outsourced CIO and investment-advisory services to high-net-worth families and family enterprises. The firm structures and manages family balance sheets, offering outsourced CIO, asset consultancy and portfolio-management services and partnering with private banks to implement investment charters and custodial arrangements. Major Domus pursues direct investments across private equity, direct property, late-stage venture and junior M&A deal flow, and it routinely arranges co-investments and bespoke family balance-sheet allocations. The organization operates internationally and maintains activity in Hong Kong in addition to its Australian base. Major Domus executes family-led co-investments and outsourced balance-sheet management rather than acting as a traditional institutional fund manager, making it a practical partner when a sponsor seeks family-office-led capital, bespoke CIO oversight, or structured balance-sheet co-investment alongside private-bank relationships.