This study presents a comprehensive environmental evaluation of the new headquarters of the Urban Agency of Kenitra to replace by: Agency of Kenitra Sidi Kacem Sidi Slimane, Morocco, based on the principles of the High Quality Environmental (HQE™) framework. The building, located in the humid Mediterranean climate of the Gharb region, incorporates a set of architectural, thermal, and operational strategies designed to enhance sustainability and energy efficiency. Using data extracted from the official environmental notice and technical documentation, the analysis examines bioclimatic design measures, the performance of the thermal envelope, HVAC efficiency, lighting systems, water conservation strategies, and comfort conditions. Results indicate that the building achieves high energy performance through a compact form, façade-oriented solar protection, an efficient three-pipe VRV system, and extensive daylight utilization supported by a central atrium. Water consumption is reduced by more than 50% through hydro-efficient sanitary fixtures, while a Class A Building Management System ensures continuous optimization of HVAC and lighting operations. Municipal infrastructure limits waste management potential, but the overall project demonstrates strong replicability for sustainable public buildings in Morocco. The findings highlight both the strengths and contextual limitations of implementing international certification frameworks in developing contexts and provide insights for future climate-responsive architectural design in the region.