This problem is very easy to solve. Compared with Beijing, we can know that there is a construction committee in every district of Beijing, which is the place where you can do real estate license! If you want to know which unit to handle, just look at the house address specified in your real estate license.

For example, if it is from Taocheng District, you should go to Taocheng District, and if it is from the city, you should go to the city. If you enter the wrong door, you can't do it. People in the city may not be able to apply for the real estate license of your place. See?