I'm glad someone mentioned this as I didn't know what to do. I like events as I can clear buildings completely so I now keep forgetting to leave buildings to tap.
I have found on a couple of occasions that some SFs have been so full of buildings to tap that I've found it impossible to tap bears without tapping buildings. I've tapped some buildings when going for bears and, it seems from what I read here, that I've lost out with those taps.
I wish there was a way for neighbours to let us know if they want buildings tapped and they need the $$$.