This paper presents a project done within the field of office interior design, which aims to create an efficient set of services that caters to the needs of the interior designer while procuring and implementing used furniture in their projects. The project was conducted in collaboration with Plym Projekt AB, an interior design company who introduced the thesis topic, and Easy Steps, sustainability-focused consultancy company. The collaboration involved regular sessions throughout the course of the thesis, including feedback, guidance and co-creation. During the past two years, the Plym has seen an increase in the demand for sustainable furniture options in the office interior design field. Since then, the company has been attempting to update its business model to provide its customers with a sustainable alternative, encountering obstacles along the way. In addition to a literature review, primary research was conducted, including stakeholder interviews and an end-user questionnaire. Upon empirical data, the authors identified a gap in the industry that is ideally suited for a new actor. The project results in the development of this new actor and its business activities through service design, proposing a set of services that will not only benefit the interior designer, but also its clients, furniture suppliers, and other stakeholders in the office furniture industry. Finally, the service is partially demonstrated through the prototype of a digital platform.