[81MC]

I'm looking to add a (space limited) small lean-to on the back side of my garage. It won't even come close to meeting the requirements for permitting, so no worries there.

However, its a small, narrow space - roughly 4' wide x 10' long, from the garage to the chainlink fence that is shared with the side of the neighbours garage.

Because the setup of our two neighbours, no one will see the 'short' side of the lean to unless they're standing between the neighbours garage and the lean-to, likewise with the 'back' side. And the front access side is visible, but only from our yards. It'll store bicycles, garden and seasonal yard equipment and maybe some tools just to free up room in the garage, so it needs to be relatively secure.

Aesthetically speaking, the two sides only need to look decent, but hold up well. I want it to be closed in most of the way, and it'll have sort of a 'barn door' type gate on the front.

My neighbours and I have a great relationship, they're totally fine with my using their side of the fence to construct (access or whatever). It's a tiny lean-to that almost will never be seen, most of which is covered by a chainlink fence anyway.

I have an abundance of construction plywood and 2x4's, so it'll be using that where I can. Just need to make something functional that isn't ugly and keeps the hoodlums and snow/rain out.

Advice on:
Siding/paint? Paint wood to match garage, or splurge on siding?
Columns? Concrete footings needed? Total roof surface area is only ~40Sq.ft
Floor? a few inches of 3/4 gravel over the existing earth?
Weather? With no eave projection, wall right up to roof?