The new Indonesian Construction Service Act has explicitly introduced the importance of supply chains for construction project delivery and sustainable supports of small-sized contractors to the Indonesian construction industry's efficiency. Most of the construction cost comes from the material cost to be delivered to the project site that needs proper logistic management. For large and medium-sized contractors, their capacities and projects values enable them to access closer tier of the supply chains; to the producers of strategic materials with more efficient transactions. This is not the case for small-sized contractors, therefore, there should be a strategic logistic service provided for helping them. This paper presents a development of a conceptual business model of a strategic logistic service, especially the third-party logistic service, for small-sized contractors in a small coverage area of operation. Seven business models were identified with the preliminarily identified potential to be the model for the region of Greater Bandung, Indonesia. The models were derived based on the origin entity that could transform or be created as a new business or extended business. The conceptual business models will be used for further research to develop proper and feasible business models of strategic logistic services for small-size contractors in the Greater Bandung area.