I'll have a looksie when I get home.
EDIT: Well, from what I can see from google searches of maps, the building has no midifications but there are hedges in the bacckside. IIRC, the 3D OoT had fences around the back of the building. It might require a modification of the ledges surrounding the backside of the house, but I think fences are your best bet if you want to add anything to indicate an entrance.