House



A Home is a structure built by the player from Blocks, Walls, Furniture, and other items, that can serve as a spawn point for NPCs. An NPC requires an unoccupied Home in order to appear (with the exception of the Guide), and will not appear otherwise. A structure must meet specific Requirements in order for the game to recognize it as a proper Home and spawn NPCs.

Requirements
'''Housing Requirements have changed with the 1.1 update. The requirements listed below are not necessarily correct, though they still provide a rough guideline.'''

A structure must meet the following requirements in order to function as a Home:
 * Is completely enclosed in Blocks (aside from the entrance) to serve as side walls, a floor, and a ceiling. You may also use Wood Platforms as part of the floor, walls or ceiling, so long as there is one non-platform block for the NPC to stand on at night.
 * Has background Walls. Walls not placed by a player (such as naturally-occurring dirt) do not count, with the exception of those behind Floating Island structures or the Planked Walls found in naturally occurring structures in caverns.
 * Has at least one placed Comfort item.
 * Has at least one placed Flat Surface item.
 * Has at least one entrance, which can be a Wooden Door in a wall or a Wood Platform in the ceiling or floor.
 * Has at least one light source. A Furnace, Lamp Post, Disco Ball or Glowstick will not work for this purpose.
 * Is at least 4 blocks tall and 8 blocks wide, or 5 blocks tall and 7 blocks wide, not including walls, floor or ceiling.

Comfort items
At least one Comfort item must be placed in a Home. Currently the following items may function as Comfort items:
 * Chair
 * Throne
 * Bench
 * Bed
 * Toilet

Flat Surface items
At least one Flat Surface item must be placed in a Home. Currently the following items may function as Flat Surface items:
 * Table
 * Dresser
 * Workbench
 * Bathtub
 * Bookcase
 * Piano

Simpliest valid option
Matherials required:
 * 25 Dirt Block for floor, wall and ceiling.
 * 32 Wall (8 Dirt Block) for background wall.
 * Wooden Door (6 Wood).
 * Wooden Chair (4 Wood).
 * Wooden Table (8 Wood).
 * Torch (1 Wood, 1 Gel, results 3).

Summary raw matherials:
 * 33 Dirt Block
 * 19 Wood
 * 1 Gel

This works, but if you don't want house to be occupied by vines it's recommended to replace dirt by wood, stone or mudstone, or just clear the walls from grass.