other clues

The only place left for the green-walled house with the coffee drinker is the fourth spot,meaning the white-walled house is the fifth.Clue one gives you a nationality and a color.Since the only column missing both these values is the center one,this must be the Brit's red-walled home.Now that the only unassigned wall color is yellow,this must be applied to the first house,where clue seven says the Dunhill smoker lives.And clue eleven tells you that the owner of the horse is next door,which can only be the second house.