Looking very much like an archeological dig site, the lot is being excavated for foundation trenches and structural footings. The trenches are being over-excavated as planned based prior soil tests, the builders were hoping this wasn’t going to be necessary. With the trenches, the floor plan of the house is evident.
Pursuing Wabi 
登呂遺跡みたいになってきたねー。
観光ガイド「みなさん、昔、ここに行儀の悪い夫婦がすんでいたという遺跡です。」