The limits for NPC building, decorations and lights need some update as Chris have increased the limit last year. POT page: https://www.shroudoftheavatar.com/?page_id=41907
Gave them an update. Some more info, more references to centralized location for info, and each has a screenshot of the item limits you can expand. Goal here is to keep chart image, player's guide and FAQ updated primarily, and have more generic info on the store entries.