Under China’s dual urban-rural land ownership system, the unequal legal status of collective and state-owned land hinders the realization of “equal rights and equal prices” for both. This paper analyz ed the impact of ownership on construction land prices using micro -level land transaction data from Wujin District, Changzhou City from 2015 to 2021 , and investigate d the role of government decision-making in this relationship. The results show that collective ownership has a negative impact on land prices , and the development of adjacent COCL has a positive impact on land prices. Besides, t he planning scope of downtown areas determined by spatial planning enhanc es the negative impact of collective ownership on land prices , thus widen ing the price gap between state and collective-owned land within the downtown areas . Furthermore, t he proportion of COCL in the annual land supply determined by land supply plan strengthens the negative impact of collective ownership on land prices , meaning that a increase in COCL supply lead s to further downward pressure on land price s . This study can provide insights for policy-making aiming to achiev e “equal rights and equal prices” for land of different ownership in China and in other countries with a dual land ownership system.