Translation of "Landlord" in Chinese

The landlord says he wants to raise the rent.

地主说他要提高租金。

Why did my sixty-year-old landlord buy a trampoline?

我的六十岁的房东为什么买了一个蹦床？

Why hasn't the landlord come to collect rent this month?

为什么这个月房东还不来收房租？