As far as the shop looking like a pump house:
The shop is in the front corner of the lot, in front of the house and near the street. It was originally off to the side and had an extra, independent garage bay. I insisted the it be slid forward, turned and somewhat buried in to the bank. So, the back of the structure is about 4’ below grade. I lost the garage bay because I can’t put a structure in the set back but I can put a retaining wall. Thus, that portion is now a parking pad.
The purpose of burying the shop is so that it is not such a visible barrier as approach the house. I will plant some evergreen plants on the back side as well so that the shop effectively disappears from street side approach.