These projects should be sponsored by government, concerned stakeholders including international agencies. I went through a terrible time while helping in a relief operations of earthquake 2015 of Nepal. Drones were used for services by international agencies.
Our ancestral house: https://www.youtube.com/watch?v=N_pIaqIrG44
Drones could provide services for elderly people staying in buildings which are declared by the government as "unsafe building" .People have no choice but to continue staying in such buildings. Any earthquake above 5.0 RS will bring down such buildings.