What's behind the green door?

Many of the little cottages and larger farm style houses near me have some sort of out building. Some a very small and others are quite big. This door is just up the road from me and is set to the side of a larger house.

It is next to a beautifully kept log store, I always like to look at the logs all piled up as I stroll. I think having a real, authentic log burning fire is living the dream!!