Property release question

Hi all,

can anyone tell me if I need property release for building in state ownership?

I got a request for property release for this picture:

This is Mezhyhirya Residence, where former Ukrainian president Yanukovych lived in past, but this estate was returned in state ownership several years ago. Do I really need property release for it? And if so, whom do I have to ask for - Ukrainian government?..

Thanks in advance!