File:House (invalid)2.png

Summary
the second of another pair of captures demonstrating some sort or other of a bug with the game's housing validity check. This one (with the door swinging inward) is not valid, despite the door and all other objects being in essentially the same position. This probably has something to do with the game, for whatever reason, counting the open door's tiles as solid blocks, when they aren't. This is merely a hypothesis, however.