Leftow's theist concept-nominalism is proposed as a theory of properties which is compatible with God's aseity and sovereignty. In this article, I focus on the question of whether theist concept-nominalism is successful in answering a notorious problem in the literature on properties, i.e. the regress problem. In the second section, I summarize TCN by illustrating what its ontology is and how its theory works. In the third section, the regress problem is recast within the framework of TCN. In the fourth section, I present my solution to this problem. In the final section, several objections to my solution are addressed and replied.