Can the residential property company change the color of the external wall without authorization?

First, the owner can't change the color of his external wall without authorization. The external wall belongs to the public part of the community, and the owner can't change the color without authorization.

Second, according to the "Property Management Regulations"

Article 46

The realty service enterprise shall assist in the safety work within the realty management area. When a safety accident occurs, the realty service enterprise shall, while taking emergency measures, report to the relevant administrative departments in time to assist in the rescue work.

The realty service enterprise shall abide by the relevant provisions of the state when hiring security personnel. Security personnel shall perform their duties when maintaining public order in the property management area, and shall not infringe upon the legitimate rights and interests of citizens.

Article 64

In violation of the provisions of these regulations, any of the following acts shall be ordered by the real estate administrative department of the local people's government at or above the county level to make corrections within a time limit, given a warning and fined in accordance with the provisions of the second paragraph of this article; The proceeds will be used for the maintenance of * * * parts and * * * facilities in the property management area, and the rest will be used according to the decision of the owners' meeting:

(a) unauthorized changes in the property management area in accordance with the planning and construction of public buildings and facilities;

(two) unauthorized occupation and excavation of roads and sites within the property management area, which harms the interests of the owners;

(three) unauthorized use of property * * * with parts, * * with facilities and equipment for business.

Individuals who commit one of the acts listed in the preceding paragraph shall be fined 1000 yuan or more and 10000 yuan or less; If a unit commits one of the acts listed in the preceding paragraph, it shall be fined between 50,000 yuan and 200,000 yuan.