The ASHVIN work package (WP) 2 “Design for productivity and safety” develops possibilities to allow designers and engineers to account for the aspects of productivity, resource efficiency, and safety early in the design phase, allowing for the use of digital twin technology at the start of the product development lifecycle. Deliverable 2.3 “Parametric design to optimize productivity, resource efficiency, and safety during early design stages” was submitted in January 2023, and it is one of the technical deliverables of this WP. This report is linked to task 2.3 “Generative design configurator”, led by TUB. This deliverable describes the parametric design and models supporting decision-making in construction project management.