Historical records show that the complex once included a wide range of facilities designed to sustain both the mosque and the surrounding community. Alongside the mosque stood a primary school (sibyan mektebi), bathhouse, library, timekeeping pavilion (muvakkithane, used historically to calculate prayer times), workshops, shops, bakeries, and textile production spaces. According to art historian Efdaluddin Kilic, these structures formed “a significant group of enterprises designed and operated together with the Selimiye Mosque.”