建設中で
a person who owns a building
the builder―the constructor―the architect
It is under reconstruction―in course of reconstruction.
The house is in course of construction―in process of construction―under construction.
the act of planning a building
The house is building―in course of construction―in process of construction―under construction.
A bridge is in course of construction―in process of construction―under construction―building.
the laying of the corner-stone
the occupation of architect