House expropriation center, which is a house expropriation department set up under the government department, usually belongs to the Housing Construction Bureau or the Housing Management Bureau, and is regarded as a kind of government preparation. It relies on local financial allocation to operate, and there is usually only one in the city. The housing expropriation service center established in this area can be regarded as the unit for the implementation of housing expropriation. There are many such institutions in an urban area. It is not for profit, and it is usually a community organization registered in the civil affairs department. It does not rely on government financial allocation, and it will charge a handling fee when implementing housing expropriation. If there is no housing expropriation, there is usually no income.

The House Expropriation Office generally belongs to government agencies, and it is a department established according to the new demolition law, namely the Regulations on Expropriation and Compensation of Houses on State-owned Land. Its function is the same as that of the previous demolition office. The House Expropriation Office is a department dedicated to house expropriation and compensation. Its main job is to levy houses and supervise the compensation fees. It is a department set up by the local people's government of a city or county, or through the administrative committee, which is specifically responsible for the implementation of the work of expropriation and compensation of houses within its administrative area, and will handle and be responsible for the demolition problems left over from the later period. The collection office is a non-profit-making unit. It is generally registered in the civil affairs department and belongs to a mass organization. There is no financial appropriation. Only when the house is collected, the implementation fee is paid according to the workload. Without the house collection task, there is no income.