After the phase-out of external support, many community based development organizations in Uganda find hardship in running the project towards achieving the main goal of the project while others get stuck.The study explored the significance of capacity building practices on the Uganda Youth at risk Development Network (UYDNET) project sustainability. The study found out a generally low consideration of top down, bottom up, Partnership community organization capacity building approaches in UYDNET. The study equally found a low level of project self-reliance and goal achievement. Capacity building had a significant relationship with project performance and it predicted 54.7% of the variance in project performance. This infromation would help project leadership/management, to explore and create awareness of capacity building best practices which they may need to adopt to enhance achievement of their desired performance expectations and mandate. To the community members and leaders, the study would offer an opportunity to express their concerns, views and experiences on the UYDNET capacity building efforts that the project leadership needs to address.