Eaves are regulated in many jurisdictions for energy efficiency, eg. you should have eaves that permit sun in the winter and not much direct sun in the summer,

Eaves are regulated in many jurisdictions for energy efficiency, eg. you should have eaves that permit sun in the winter and not much direct sun in the summer, and you should capture rainwater to reduce immediate flooding within the public water system. Apparently many places are either still loosely regulated, regulators are looking backward or snow changes the equation too much to bother with.