This study evaluates the application and performance of procurement principles in construction projects within Manggarai Regency. Procurement in the construction sector is crucial as it involves acquiring buildings or spaces through various methods, which significantly impacts public trust, especially in government procurement relying on public funds. E-procurement, a technology-driven approach, enhances transparency and efficiency but faces security concerns and inadequate legal frameworks. This research aims to objectively assess the implementation of procurement principles, including effectiveness, efficiency, transparency, and openness, by surveying suppliers’ satisfaction. The methodology involves identifying and validating 48 indicators related to seven procurement principles through expert and respondent surveys. The analysis reveals that while the overall adherence to procurement principles is high at 96.364%, performance gaps exist, with specific indicators underperforming. Notably, indicators related to efficiency, effectiveness, transparency, openness, competition, fairness, and accountability show varying performance issues. Quadrant A, indicating top priority, includes attributes important to suppliers but currently not meeting their expectations. Quadrant B reflects attributes performing well and should be maintained. Quadrant C features less critical attributes with poor performance, suggesting minimal priority for improvement. Quadrant D includes indicators perceived as excessive and less important, indicating unnecessary resource expenditure if enhanced. The findings underscore the need for targeted improvements in procurement processes, particularly focusing on indicators in Quadrant A, while reassessing the need for resources allocated to Quadrant D indicators.