Hello! I'm starting in the photography business and I need some guidance when it comes to model and property releases. Do I need a property release every time I photograph a building, a monument or another public or private institution, if I want to sell that photograph? Is it necessary to talk to the owner, the manager or the administrator to sign the property release? And what if there are many recognizable people in the picture, Do I need a model release for each person in the picture?