The mayors call on the EU to establish an emergency financing stream to enable cities to tackle the lack of social and affordable housing supply, thereby recognising cities as key partners in implementing EU housing-related initiatives. The mayors also request the creation of fast-track EU funding for cities to accelerate the deployment of EU-funded programmes on the ground, reform State Aid rules to boost public investment in social and affordable housing, and activate national escape clause to enable greater investment in sustainable social and affordable housing.