Is it legal to change French windows?

Legal analysis: it is illegal to change French windows. Unauthorized modification of floor-to-ceiling windows can be regarded as the behavior of community owners to expand the balcony, which belongs to the behavior of occupying the space of property management area without authorization. The parties can complain to the local real estate inspection department, and the real estate supervision department will give a warning, make rectification within a time limit, and will give corresponding punishment. Maintenance and conservation of the parts, facilities and equipment used in the property management area, and the rest shall be used according to the decision of the owners' meeting.

Legal basis: Article 2 of the Regulations on Property Management The term "property management" as mentioned in these Regulations refers to the activities that the owner selects a property service enterprise, and the owner and the property service enterprise repair, maintain and manage the house, supporting facilities and related sites in accordance with the property service contract, so as to maintain the environmental sanitation and related order in the property management area.