The noun 房租 (fángzū) means "rent" and specifically refers to the payment made for the use of a residence or property. It combines 房 (house) and 租 (rent). It is frequently used when discussing housing costs and living expenses.
北京的房租这几年涨了很多。
Běijīng de fángzū zhè jǐ nián zhǎng le hěn duō.
Rent in Beijing has gone up a lot in recent years.
她每个月的房租要花掉工资的三分之一。
Tā měi gè yuè de fángzū yào huā diào gōngzī de sān fēn zhī yī.
Her rent takes up a third of her salary every month.
我打算找个房租便宜一点的地方住。
Wǒ dǎsuàn zhǎo gè fángzū piányi yīdiǎn de dìfang zhù.
I plan to find a place with cheaper rent to live.