2025-06-13 00:00:00 DURU BİLİŞİM TEKNOLOJİLERİ LTD.ŞTİ. has been providing software services for the building inspection sector since 2000. YapDen Hesap - Building Audit Calculation software DURU BİLİŞİM TEKNOLOJİLERİ LTD.ŞTİ. It has been prepared by our company in order to facilitate the Calculation of the Building Inspection Service Fee and is offered to your use free of charge.