Which department should I complain about unreasonable property fees?

Legal analysis: you can complain to the property management office of the local real estate administration, which is the competent department of the property industry. Do a good job before the complaint, try not to take the form of oral complaint, and try to submit it in writing. Before submitting, look at what has not been done in the property management agreement signed with the property management company, and the evidence should be fully complete.

Legal basis: Article 944 of General Principles of Civil Law of People's Republic of China (PRC), the owner shall pay the property fee to the property service provider as agreed. If the property service provider has provided services in accordance with the agreement and relevant regulations, the owner shall not refuse to pay the property fee on the grounds that he has not accepted or does not need to accept the relevant property services. If the owner fails to pay the property fee within the time limit in violation of the agreement, the property service provider may urge him to pay it within a reasonable period of time; If the payment is not made within a reasonable period, the property service provider may bring a lawsuit or apply for arbitration. The property service provider shall not stop power supply, water supply, heat supply and gas supply to demand payment of property fees.

"Regulations on Property Management" Article 48 The real estate administrative department of the local people's government at or above the county level shall promptly handle the complaints of owners, owners' committees, property users and property service enterprises in property management activities.