From patch 2.2 onward, a free company will automatically relinquish its land if its estate is unused for a prolonged period of time.

I'm the owner a small FC. Consists of family and friends.
I haven't played for a month and i'm scared my FC House will get relinquished.

Can anyone define "..unused for a prolonged period of time." ??

30days? 60days? 90days? 120days?