The Third Chamber of the Supreme Court dealt Ada Colau a setback, ruling against a penalty on empty dwellings in the hands of financial institutions. The Supreme Court upheld the Superior Court of Justice of Catalonia’s ruling stating that the Barcelona City Council does not have the power to impose such a tax.

The municipal ordinance had set a rate of 633 euros for each case opened upon discovering an empty flat and 286 euros for each additional requirement in cases where the owner failed to comply with the municipal order.