Professional service in China is facing challenges due to the rapidly changing built environment. The environment forces the construction industry to reconsider professional service model for thriving, while the life cycle professional service model has significant implications for value addition in professional system. However, literature that provides quantifiable information for practitioners and researchers to better understand drivers of professional service model innovation (PSMI) is scarce. Based on innovation diffusion literature and institutional theory, this study examines how PSMI is influenced by institutional pressures (including coercive, mimetic, and normative pressures) in the construction industry. The researchers conducted an industry-wide survey in China using structural equation modeling to analyze the acquired data. Data analyzing demonstrates that both coercive and mimetic pressures prominently influence the life cycle of PSMI. However, this study reveals that normative pressure does not significantly influence PSMI. Results indicate that the owner’s cognition plays an important mediating role between institutional pressures and PSMI. The findings contribute to understanding how different types of institutional pressures can be better steered to facilitate PSMI in the construction industry and furthering knowledge on PSMI mechanisms for new professionalism cultivation in the industry to realize sustainable development of professional system.