What if the owner asks for unreasonable decoration?

[Case analysis] This case is a common problem during the renovation period after the owner moves in. After buying a house, the owner, as the property owner, has the right to decorate his house, but its decoration cannot affect the safety of the house. Under normal circumstances, the owner should fill in the decoration application before moving in and submit it to the property management company for approval. The property management company shall, according to the Regulations on Building Decoration and Management and the Regulations on Home Decoration and Management promulgated by the Ministry of Construction, make sure that the decoration scheme applied by the owner has no damage to the building structure and does not pose a safety hazard to the normal use of the owner before it can be approved. After the approval of the property management company, the owner can start the decoration. After the owner's decoration is completed, the property management company must organize acceptance, and it can only be used after it is qualified. In this case, the owner's request to replace the girder may bury hidden dangers for the safe use of the house, so the property management company cannot agree to the owner's request. Even if the owner's father is a senior architect, the property management company can't agree to the parameter calculation and beam modification scheme, because this scheme can't represent the approval opinions of the original design unit or professional design unit.