We have a bit of a problem with fallen leaves, ours I might add, but we like the trees.
Unfortunately our Sucker Upper has decided that it prefers blowing to sucking just lately, so I will go with the tip upthread, and just blow them into the borders.
Less bother and better for the garden. 
Just thinking about what Ginny42 said about being liable, I thought I had read, (long time ago so may be wrong), that you may be sued if you cleared, say snow/leaves, and it wasn't done sufficiently.
On the other hand, if you didn't bother, then the person had to take care, because of the hazard that presented itself.
Not sure at all, whether I have explained myself clearly now.