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Grandma needs a handrail!

We have four wooden stairs leading up to our front door and I need a handrail built to assist my elderly grandmother who has limited mobility, so it needs to be sturdy. There is a gutter pipe running down the side of the house where the stairs are. Please see picture. If easier, we have another set of wooden stairs around the side of the house where a handrail could be put instead (2nd picture). Thanks!!