When you complete each storage collection by adding the last piece to the collection, you will receive a silver metal box in your backpack that represents 100 storage slots for a home or guild house. Note that you must be the OWNER of the building to apply the additional storage slots, admin won't be able to.
To apply the storage slots simply enter the building and stand near the building interface; open your pack, radial the item then click Add storage to this building. The silver box will disappear from your bag and 100 additional storage slots will be added to the building.
Once you add the additional storage slots to the building it will be flagged NO TRADE. In order to trade the building you will need to remove the storage devices which you can do from the building interface. In addition you will want to be certain to remove the additional storage boxes BEFORE YOU RE-DEED A BUILDING. According to reports, re-deeding a building with the boxes still installed will delete the boxes.
Note that there are five collections of this type in all and when you complete all five you get a sixth 200 item increase box, so you can add an additional 700 slots to a building!
NOTE: It is possible to buy these items from other players via the bazzar or vendors. After you have purchased the item, it goes into your inventory. Use the radial menu and choose "add this item to your collection." It will be added to your existing collection or will start the collection for you. If it doesnt add, then you have that particular one already.
- NOTE** Once you have collected all your pages and have recieved your expansion box, ONLY YOU can use it for YOUR HOUSE ONLY. You can not sell it nor trade it, no one can access it, nor pick it up other than you. If you have a second account and want to use this on that account to expand that house, it will not work. Best thing to do is to have your second account pick up the unclaimed pages, then have that account add to its collection.