Omerbasic's Mosque has a simple construction, a rectangular base, with a minaret which is built into the south-western wall. In the vicinity of the mosque, right at the entrance to the complex, Dervish Hasan's burial chamber was built. Next to it there is a smaller ground-floor building, which for a long time served as a residential building. Next to the entrance a public fountain was built, and not long afterwards a mosque house was built too, which was intended as the residence of the hodja or the imam of the mosque. The whole area around Omerbasic's Mosque is surrounded by a stone wall.