Q: Does a walk-in closet in my house need a mezuzah?
A: Many of the doorways of the various rooms in a person’s house are required to have a mezuzah on the doorposts; however, not every doorway is halachically obligated to bear one. Whether or not a particular room needs to have a mezuzah will depend upon the location of the doorway, the intended use of the room, and other factors. A complete exposition of all relevant halachos is beyond the scope of this article. We will limit ourselves to one specific question: What are the specific measurements that a walk-in closet would need to meet in order to halachically be considered a “room”? In other words, when is a walk-in closet large enough to require a mezuzah and when is it small enough that it does not?
A large walk-in closet is halachically considered to be a room if it is […]