Should the owner of the 1 building agree to build a Little Square?

The owner's consent must be obtained according to law.

According to Article 278 of the Civil Law, "(7) Rebuilding and rebuilding buildings and their ancillary facilities" is decided by the owner. According to Article 49 of the State Council's Property Management Regulations, the public buildings and * * * facilities planned and constructed within the property management area shall not be changed. If the owners need to change the use of public buildings and facilities according to law, they shall inform the property service enterprises after handling the relevant formalities according to law; If the realty service enterprise really needs to change the use of public buildings and facilities, it shall be submitted to the owners' meeting for discussion and decision, and the owners shall go through the relevant formalities according to law. "