There are too many photographers out there who are being sued by their models and Property Owners. One of the many reasons is violation of privacy and defamation. As a fellow photographer, I would advice to get a release form signed by your subject or property owners before taking any pictures to avoid future legal actions. Please be a responsible photographer and strongly take this into consideration. To find out more about Release Forms please visit: http://photography.lovetoknow.com/Photography_Release_Forms It is a very informative website and gives examples like when is a release form needed.