Digital twins in real estate are virtual replicas of physical properties created using data and digital technology. They simulate building structures, systems, and environments, allowing for analysis and optimization without impacting the physical property. Digital twins enable real-time monitoring, predictive maintenance, and scenario testing. In PropTech, they enhance real estate efficiency by improving design, construction, and management processes. Implementing digital twins represents a significant advancement in technology in real estate, contributing to smarter and more sustainable buildings.