1. Enter official website () of the Ministry of Housing and Urban-Rural Development.
2. On the page of "Service Hall" in official website, find and click the "Unit Qualification Inquiry" option.
3. In the query page that pops up, you can select "Qualification Grade of Engineering Cost Consulting Enterprise" or other qualification categories as required. Take "Qualification Grade of Engineering Cost Consulting Enterprise" as an example.
4. In the query page that appears, enter the name of the enterprise to be queried, such as "Grade A Qualified Enterprise", and then press enter or click "Query".
5. Display the query results, including enterprise qualification grade, qualification validity period and qualification certificate number.
It should be noted that the inquiry method of Grade A qualification of engineering cost consulting enterprises may be different in different regions, and it can be combined with the local housing construction department or official website of Housing Construction Bureau.