The architect completely reconceived the design of this building.

reconceived 是动词 reconceive 的过去式。reconceive 由前缀 re-（表示"重新"）和动词 conceive（构思、设想）组成，字面意思是"重新构思"。在建筑设计中指对原有方案进行彻底重新构想。