Can a realtor take pictures of the house without notifying the tenants...also I have a suspision my picture was taken without my permission... what can I do legally if I am in one of the pictures
Yes the realtor or anyone else can take a photograph of anything in the public view without getting permission. If your image (picture) is used for commercial purposes (someone is making a profit) then you may possibly have some legal claim. But probably not.
Good luck.