Would removing blocks under my terraria house make my house valid for npcs?

Crimson is getting very close to my house. If I dug a large hole around the bottom of my house, would that stop crimson from invading and making my village people leave? I have seen people dig a quarantine around their houses, but I don't have the materials or time to dig it now because it's very close.
Best Answer
A 3 block wide hole around the whole bottom of your house will work as crimson can't grow that far away. Be sure to make the hole connect under your house or underground to ensure no crimson slips in that way.
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What makes a Terraria house valid?
Houses must be at least 60 tiles in size, but no more than 750. This includes the walls you've built around the edges. Walls must be made of blocks, doors, platforms or tall gates. The most common set up would be a door in either wall with blocks on top of it.What makes housing not valid in Terraria?
"This is not valid housing." The room does not meet one or more of the following requirements: Walls, Minimum Size, Background Walls, Corruption Limit. If the corruption is at fault, usually it is only a small amount and it may be too far away to be seen on the same screen as the room.How do you check if a house is suitable for an NPC Terraria?
The player can check whether a given house is suitable for NPC use or not, as well as manually appoint a house to a specific NPC. To check whether a house is suitable for use, press the \u2692 Use / Attack button on the "?" housing query mark and then press again anywhere inside the house.Terraria NPC House Design Tutorial (Ideas Guide \u0026 Requirements, Compact Hotel/Village Tips)
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