Listing different parts of one mention

Good afternoon, 

I am trying to list a mention in Belgium. It is located in the private beautiful park garden that covers 1 hectare of land has a pond, a Mansion, and a Cottage. However, I can not figure out which property type should I choose in order to list the options as follows: 

1. Full property with mention and cottage

2. One-half of the mention has a separate entrance and 3 rooms.

2. Second half of the mention has 4 rooms and also a separate entrance. 

4. The complete mention 

5. The cottage. 


I would really appreciate any help in this matter as I am really confused and lost right now with the logistics around it.