the derelict old house across from

the derelict old house across from
The derelict old house across from the warehouses and the even more decrepit one just beside them have been placed on the list of historic landmarks.这句话好混乱,谁翻译一下,还有成分能不能说一下,那个have been是谁的谓语啊?

The derelict old house across from the warehouses/ and /the even more decrepit one (just beside them) have been placed on the list of historic landmarks.
那座废弃的破旧不堪的房子就在批发商店的对面,比它更破旧的就在它们旁边,它们都已经在历史名录的名单之列了.
因为是have,所以证明主语不止一个,根据句意得知,have是The derelict old house,the even more decrepit one 的谓语.