Big house upgrade kit
From Tree of Life Wiki
Big house upgrade kit is used on Cabin to upgrade it into a Big house. Upgraded cabin has 64 inventory spots.
|Big house upgrade kit||Silk fabric roll (3)Pencil (2)||Carpenter's workshop||Carpenter 38|
|1||Groundworks||Rock (6), Log (4)|
|2||Finishing work||Stone brick (20), Wooden plank (30), Copper ingot (10)|