For a list of all items and upgrades within the Construction skill, see Construction/All milestones.
The Treasure Room is a room in Player-owned house that can be used to contain a reward for players who reach it and kill the guardian. It can be built at level 75 Construction for 250,000 coins.
There are 6 Hotspots available:
, The guardian has to be killed before a player can get the treasure.
The treasure can only be opened once the guardian has been killed, and can store a maximum of 1,500 coins. In addition, house owners must wait five minutes between adding treasure to their chest.
If players have more than one treasure chest, then they act as one; adding coins to one fills them both, and opening either one gives access to the full treasure.
Players have to pick the lock (using Thieving) or force the lock (using Strength) to open dungeon doors. Higher level doors are more difficult to open.