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Terraria · Survival

Terraria NPC house checklist: fix invalid housing before rebuilding

Use the housing query before tearing the room down. A room can look finished and still fail because of its size, background walls, furniture or standing space. Change the part named by the check, then query the same room again.

Reviewed 2026-10-15 · Standard Desktop, Console and Mobile housing; special NPCs can differ

Start with a simple room you can inspect

For an initial wooden house, a plain rectangle is easier to diagnose than a decorative shape. The beginner guide uses a 9-by-7 outer frame. Treat that as a convenient example, not the only legal design.

Build the boundary, add an entrance and fill the background with suitable player-placed walls. Do not assume that natural background walls count merely because the room looks enclosed. Keep the first room simple until the housing query accepts it.

Check four furniture categories

The standard check looks for a light source, a table item, a chair item and a door item. A torch, work bench, chair and normal door make a straightforward beginner set. The work bench can satisfy the table requirement, so another decorative table is not automatically needed.

Craft the missing furniture, place it inside the room and run the query again. A light-looking block or wall is not automatically a qualifying light-source item. Using the ordinary starter set removes that uncertainty while you learn the housing rules.

Read the result before changing the layout

If the check reports a missing wall, inspect the background. If it reports size, compare the room’s boundary with the simple starter example. If it reports nowhere to stand, inspect the interior floor and leave a clear standing area instead of filling every tile with platforms or furniture.

A corrupted-location message is a different problem from a missing chair. Adding more furniture will not fix a site rejected because of nearby evil-biome conditions. Check the location before spending time rebuilding the same room in place.

Separate valid housing from an NPC’s arrival

A suitable room establishes that the room passes the housing rules. It does not replace an NPC’s own arrival conditions, nor does an occupied room provide another free home.

After the query accepts the house, stop modifying it just because the character has not appeared. Check whether you are waiting for the Guide, a different ordinary NPC or a special character with additional requirements. This keeps a working room from being repeatedly broken while diagnosing an unrelated condition.

When your plan breaks

What happensWhat to change
The game reports missing furniturePlace the simple torch, work bench, chair and door set. Query the room after the change.
There are visible walls but the wall check failsInspect the background wall tiles. Natural walls and player-placed safe walls are not interchangeable.
The room has no space to standLeave a clear standing area with solid flooring; simplify crowded furniture and platform layouts.
The house is suitable but nobody moves inCheck occupancy and that NPC’s arrival conditions instead of enlarging an already accepted room.

Quick answers

Does a work bench count as the table?

Yes, a work bench fulfills the standard house table requirement. It does not remove the other housing requirements.

Must every house be 9 by 7?

No. That is an easy starter example. Housing supports other valid sizes and shapes, but a simple rectangle is easier to inspect.

Does valid housing guarantee every NPC can move in?

No. Occupancy, NPC arrival conditions and special location requirements still matter.

Sources & version notes

The checklist follows the Official Terraria Wiki’s standard housing documentation and beginner example. These are documented mechanics and editorial troubleshooting advice, not a claim of independent testing of every housing design. Modded housing and special NPC conditions are outside this checklist.