@franontheedge see image for what i mean with 'mass models' you have to activate the 3d buildings in google earth. the windmill can be downloaded from google warehouse - when you install sketchup you can take dimensions from it - many dutch windmills are of this type - the attached building is less common, very often these mills stand alone. together with photographs you can make your own windmill.

"The light at the end of the tunnel may be an oncoming train"