Regional economic development is the ability to generate additional income or improve welfare. The effectiveness of the Sumatra Provincial Government in implementing economic development. This research aims to examine a collaborative development planning model that can support economic development in North Sumatra Province. Structural Equation Model (SEM) was adopted as an analytical framework using a quantitative approach with a focus on cause-and-effect relationships and influences. The results show that only the Top-Down Planning Pattern has a direct impact on Regional Economic Development. Apart from that, the collaborative model of Dawes & Eglene, Djumara, and Ansell & Gash can increase regional economic development. Based on data analysis, the Collaborative model is proven to be effective compared to the direct influence of Bottom-Up and Top-Down planning. Meanwhile, Bottom-Up planning which is strengthened by the Djumara model was chosen as the most effective in increasing regional economic development. Among the three collaboration models, Djumara and Ansell & Gash have a positive impact on this variable. However, through indirect testing, Dawes & Eglene, Djumara, and Ansell & Gash can mediate or improve these variables. Based on the results, Bottom-Up planning through the Djumara model is most effective in increasing regional economic development. This model is recommended as a shortcut to effective development planning using Collaborative Culture, Leadership, Strategy, and Team Processes.