This unit of competency specifies the outcomes required to produce digital three-dimensional (3-D) models for building design projects covered by the Building Code of Australia (BCA), except construction Type A buildings. It also covers demonstrating and discussing the representations with clients and stakeholders.The unit supports preparing and presenting 3-D models to clients and stakeholders to illustrate concepts of small-scale building design projects, including alterations and additions, heritage restorations, and new buildings, including houses, factories, motels, offices, restaurants, retail and service outlets, and warehouses. It applies to building designers working on small-scale building design projects.Licensing, legislative, regulatory or certification requirements apply to this unit of competency in some States. Relevant state and territory regulatory authorities should be consulted to confirm those requirements.