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In the architecture, engineering and construction (AEC) industry stakeholders from different companies and backgrounds collaborate in realising a common goal being some physical structure. The exact goal is typically not known from the beginning, and throughout all design stages, new decisions are made - similarly to other design industries [1]. As a result, the design must adapt and subsequent consequences follow. With working methods being predominantly document-centric, highly interrelated and rapidly changing design data in a complex network of decisions, requirements and product specifications is primarily captured in static documents. In this paper, we consider a purely data-driven approach based on semantic web technologies and an earlier proposed Ontology for Property Management (OPM). The main contribution of this work consists of extensions for OPM to account for new competency …