What department should I complain about the parking space?

Legal analysis: specifically, who is the dispute with you? If you are with a property management company, you can directly complain to the property management company. If the parking dispute with a third party is a civil dispute, you can choose to bring a lawsuit directly to the people's court or seek mediation from the property management company.

Legal basis: Article 1 19 of the Civil Procedure Law. The prosecution must meet the following conditions:

(1) The plaintiff is a citizen, legal person and other organization that has a direct interest in the case;

(2) Having a clear defendant;

(3) Having specific requests, facts and reasons;

(4) It falls within the scope of civil litigation accepted by the people's court and is under the jurisdiction of the sued people's court.