This blend contains everything you need to add gutters and downspouts to your structure except materials. Included in the file are:
4 different lengths and configurations of gutter. There's a straight length with holes at both ends, a straight length with hole at one end, one section with angles, holes at each turn, and the full wrap-around (almost) with plain corners. You should be able to slice and dice this lot to meet the shape of your structure.
one bracket with bolt (unjoined). I use them in arrays.
one splash block
one downspout curve which you can modify to suit your needs
one bezier circle for use as bevel object with downspout curve
Gutter cutout shape. Extracted from downspout hole, could be used for extruding more spouts.
A shout out to @NDakasha, here on Blend Swap, whose small plants and shrubs are seen in this image. The trees are from the Realistic Tree Asset Pack, from Blender Market. The default image is from a work in progress.
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