Got an email from Stefan this afternoon. He sent along the newest drawings based upon the latest map info and my measurements with Rutger last weekend.
The main difference is that we've moved the little house to be alongside the big house so they're both looking downhill towards the water. Our idea is the houses are related to each other as their doors are in the same direction, i.e. someone standing at the front door of one house can look left (or right) to the front door of the other.