In 2026, duplex properties are increasingly viewed as a practical middle ground between single-family homes and small multifamily assets. For global buyers and investors, the appeal is straightforward: two independent living units under one roof can diversify income, reduce vacancy risk, and create multiple exit strategies—from long-term rentals to partial owner-occupation. This article explores why duplexes are gaining relevance across markets, how to underwrite them intelligently, and what to watch for when buying across borders.