Is Zakah due on a house’s revenue spent in maintenance?

My father bought a house four years ago, and rented it only three years later; and now a year has elapsed since its rental, and he has received no income from it, since the money taken was spent on maintenance; and now a lunar year has come upon it: is Zakaah due on it?

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad , is His Slave and Messenger.

 

If a house is prepared for rental, Zakah becomes due on its revenue, i.e. the rent money rather than on its value, once it amounts to the due Nisaab either by itself or by what is joined to it of other money or articles of merchandise, and a full lunar year has elapsed on it.

If the income of this year was spent on maintenance, no Zakah would be due on you concerning it this year.

Allaah Knows best.