House in Iran: sell, cash out or keep?

TL;DR: My father owns a house in Iran with my uncle. After my grandfather's death, the question now arises: sell, cash out or invest the money in another way in Iran? My family has a house in Iran that was bought about 20 years ago. The background was that my grandfather didn't have to constantly move as he got older because of rising rents. I know from my family that rents in Iran often rise significantly after a year and this regularly puts tenants under pressure