Urban planning as a shared resource is tied with the 'tragedy of the commons'. Since UN-Habitat III, Ecuador has embraced the opportunity for urban sustainability. However, while the right to the city is constitutionally anchored since 2008, the integration of strategic sectoral plans and their spatial link remains unclear. Aiming at a better understanding on how sectoral plans, particularly mining, are articulated to planning instruments, we reviewed the existing instruments as well as those from the mining sector. Rooted in qualitative methods, interviews were conducted with respondents involved in the development of underground and land use planning in Ecuador. Primary data were collected during fieldtrips, and policy analysis was carried out descriptively. Findings were differentiated by spatial planning instruments, underground mining concessions and their implications for the empirical case study of Zaruma. Results showed that mining companies capture their risks and externalities into the local development agenda, and that municipalities remain limited to corrective or reactive measures. While mining sectoral plans consider the relevance of local development plans (PDOT), we identify an instrumental vacuum across the whole 'National Decentralized particularly