The house with attic on the top floor wants to change the entrance of stairs. If you are satisfied, please ask professionals to give you extra points!

According to the Measures for the Administration of Residential Interior Decoration, your behavior is illegal. Unless the property does not understand the law, it is useless for you to talk to the property. The property won't agree, even if the property agrees, it can't exempt you from the responsibility. If you must change, then change, why ask here! There is a saying in China that "if the people don't sue, the officials don't investigate". With luck, there may be no problem. You'd better let as few people as possible know.