@samae I am inclined to think that at one time - years ago - it was actually a garage. The size is right for the cars driven then - maybe a model A? The doors also look like garage doors. Just a guess, of course. Currently I don't think it is being used - it looked quite abandoned. Thanks for your question and comment.
What a neat find - so different than others you've posted lately - almost looks secluded - love the clarity of those trees and their almost shiny bark. It's such a neat winter shot, Jean.