Someone keeps leaving finished laundry in our building’s only dryer. When is it okay to move it?

Our six-unit building has one washer and one dryer in the basement. For the past month, Saturday laundry has turned into a quiet standoff with a blue fitted sheet.

The same resident starts a dryer load around late morning, then disappears for hours. I know it is probably the same household because the load usually contains blue sheets, gray towels and several small sports uniforms. I do not know which apartment it is, and I am not interested in identifying anyone by their socks.

The first weekend, I waited forty minutes after the cycle ended. The second weekend, I waited an hour and knocked on two likely doors before giving up. Last Saturday, I placed the dry clothes carefully on top of the dryer, used the machine and returned before my cycle finished. When I came back, the blue sheet was gone and a handwritten note was taped to the lid: “Please do not touch other people’s clothes.”

I understand the discomfort. I would not enjoy a stranger handling my laundry. I also do not understand how one person can reserve the building’s only dryer indefinitely by leaving a finished load inside it.

There are no posted laundry rules. The landlord provides a folding table, but it is often dusty and holds detergent bottles. I could bring a clean basket and transfer abandoned loads into that. Somehow arriving with an “other people’s laundry basket” feels both considerate and absurd.

The obvious fix is communication. I could respond beneath the note: “Please remove loads within 20 minutes of the cycle ending.” But anonymous note warfare is a miserable way to run a shared room. I could ask the landlord to post neutral rules, though that may turn a tiny etiquette issue into building management.

Timing is also tricky. Washing and drying together take long enough that residents leave the basement. No one should have to sit beside a dryer for an hour. A short grace period seems fair. Three hours does not.

This weekend I need to wash bedding before a guest arrives. I do not want to spend Saturday monitoring the basement or knocking on every door. I also do not want to respond to “do not touch” by becoming more aggressive.

What is a reasonable grace period in a one-dryer building? Would you leave your own signed note, ask the landlord for a posted policy, or move a finished load again after waiting? And if you do move it, what is the least disrespectful place to put it?