Hawzah News Agency – There is a mosque which is going to be destroyed by municipality due to traffic congestion, so there will be no mosque there in the future. What are we supposed to do with the mosque's furniture, equipment, tools and appliances and building material?
Answer: If what was left of the mosque’s furniture, equipment, tools and appliances, building material, etc. after its demolition, had originally been confined to its sole use, by way of endowment deed, it is obligatory to make use of them in another mosque. Should this not be possible, the proceeds be spent on other mosques.
Source: https://www.sistani.org/