I'm pretty lucky. I'm in an office park but much smaller. Only 20 employees and I'm the only cyclist.

I lock my bike to a tree that is about 20 feet from a window shared by me and a few others. Anyone trying to tamper would be noticed pretty easily. I even just leave my helmet on the handlebars, unlocked.

I do leave the cable lock here, around the tree. It's too bulky to carry every day and at home the bike is in the garage.