Why is China's household registration system so resilient, and why are migrant workers consistently excluded from equal urban welfare? By disaggregating the hukou and land components of the rural–urban dualist regime, this article argues that dualist land ownership, formalized in China's 1982 Constitution, perpetuates the hukou system and unequal welfare rights. On the one hand, dualist land ownership results in an abundance of low-cost, informal housing in urban villages. This reduces the cost of short-term labour reproduction and diminishes migrants’ demands for state-defined urban rights. On the other hand, dualist land ownership enables local governments to amass significant revenues from land sales. The prominence of land-based revenues prompts local governments to link urban welfare rights with formal property ownership and residency, obstructing substantive reforms to the hukou system. For comparison, this article highlights Vietnam, a communist country with a unitary land ownership system, which has made greater strides in reforming its household registration system.