The Rimmington Customs Office is a small office in the Asgarnian town of Rimmington. It is part of the Customs and Exise Office, which is responsible for the enforcement of maritime law in Gielinor. Here resides the Customs Sergeant, who delivers players to Rock Island Prison during the Rocking Out quest.
- A bank deposit box - during Rocking Out, players must deposit all their belongings in the deposit box before being sent to Rock Island Prison. After the quest, this deposit box can be used to store logs cut from the nearby willow trees, yew trees, and gold ore rocks.
- Willow trees that are very close to the office - using the deposit box, they can provide quick Woodcutting experience.