Working in Westlake Village in a very nice area I came across a window rescreening job that just kept growing. The client called because he had a few window screen he needed to have rescreen but he did not know which ones he wanted one. What I do in this case is come over and give you a free estimate, I look at all the screens with the client and pick out the ones that need new screen mesh the most.
The screen repair process is simple, i have to asses the situation looking at the frame condition then the corners to see if they are plastic or not and if the will hold up with new screen. Replacing the screen material is the cheaper way to go when thinking about screen replacement if possible but thats not always the case. Sometimes frames are cracked, bent or even missing and if they are then the only option is making a new custom screen on the spot.