This research aims to identify the Facilities Management diffusion model in an emerging market taking Sri Lanka as a case. The purpose was to identify its diffusion model with special features that can advance the Diffusion of Innovation (DOI) theory. The research took a pragmatist paradigm and was conducted through a mixed-method approach. It took a quantitative approach from a positivist point of view for a deductive theoretical approach to finding the nature of FM diffusion in Sri Lanka based on current innovation diffusion theories. A qualitative approach was used in parallel for a deeper understanding of the unique context being studied. Facilities Management is being adopted in Sri Lanka in its generic definition with minimum re-invention. A higher education institute has played the role of principal change agent while being an education innovator. Theoretical change agents have had an insignificant role. Several unique features had contributed to diffusion efficiency. The diffusion model can be employed by both higher education institutes and authorities to introduce new professions or practices to a new market effectively. The study concludes with a unique innovation diffusion model that has shown its success. It shows how a higher education institute plays a key change agent role in the diffusion of a new professional. A similar innovation model has not previously been reported.