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How do I get the room on the left to be a valid house for an NPC?

  • 2
    Specifically, "The floor cannot be only wood platform, there must be a place for the NPC to stand without him standing on wood platforms. Make sure the room is big enough to be considered a proper house as well". Dec 11, 2013 at 5:30
  • 1
    It has to do with either low light level or wood platform floor. Dec 11, 2013 at 5:33

1 Answer 1


There are two things which are causing your housing to become invalid.

screen cap of problem

Firstly, you can't use a platform as your only flooring - NPC's will want some kind of solid ground to stand on.

Secondly, because the platform isn't a valid floor, it's counting the circled area as part of your house. The whole area behind the house needs to have a back wall - this cannot be a dirt wall either, it needs to be made of wood or stone or somesuch.

  • 2
    Some of the floor can be platform, but there must be some solid ground, too.
    – 3ventic
    Dec 11, 2013 at 6:12

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