Question

Passive or Active?
Once a week, the house is cleaned by Aunt Margene.

Answer 1

Active? because she regularly does it

Answer 2

This sentence is active.

Yes, the sentence has a verb that talks about the past but, the phrase "Once a week" makes it a presently on going sentence.

Meaning the maid comes once a week. She will come this week and she will come next week.