the minecraft wiki says this about iron golem spawning: "Since Java Edition 1.14, an iron golem spawns based on villager gossip at a gathering point. The villager who starts the gossip must have a profession that is not nitwit, slept in the last 24000 ticks, been to their job site block in the last 36000 ticks, gossiped 5 times about the need for an iron golem, and have four other villagers within 80 blocks. The Iron Golem then has a chance to spawn in a 16×6×16 area centered on the location of the villager who spread the gossip." unfortunately, this says nothing about where the iron golem can or can't spawn. I'm trying to make an iron farm, and a trading system, and I would rather not remove the blocks, but make them spawn proof instead.

  • I think they even spawn in air and inside non-solid blocks (like fences). It might even spawn inside full blocks, but I'm not sure. – Fabian Röling Jun 29 at 1:53
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    I know for sure that they don't spawn inside solid blocks, as they would instantly suffocate, and create a large amount of sound, and it has never happened before. I've had golems spawning in chests before, and based on what I've managed to find, I think they just spawn anywhere as long as there aren't any solid block or bed obstructions within a 1 x 3 x 1 rectangle. I'm not too sure though. – Ded Turtle Jun 29 at 1:57

Glass has worked for my farm so far I've changed it about 10 minutes ago after my golems were spawning on my half slabs changed it to glass and everything has spawned in the place I need it to including cats

  • Then it might be that all solid blocks block it. – Fabian Röling Jul 12 at 16:26

On the Minecraft Wiki, it says:

Mobs will not naturally spawn on transparent blocks, in water (except for squid, drowned, fish, dolphin and guardians), in lava, or on half blocks (slabs, stairs).

So I guess this applies to Iron Golems as well.

To check, you can create a superflat world, find a village, make sure it meets the conditions, and see if one spawns.

  • Iron Golems spawn in every village as of 1.14. – SkyPaul Jun 29 at 10:05
  • @SkyPaul Have you tested on superflat worlds that they do not spawn upon generation on the ground given my conditions? – Bytes1024 Jun 29 at 11:52
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    I've tested on half slabs, they spawn there, or rather on the block below it, iron golem farms frequently use water in their spawning platform, so I think they spawn there as well. I don't exactly want to use lava, as it poses a large hazard, and I've seen iron golems spawn in chests before. Like completely inside the chest, with the chest covering its head. I have to test glass though, that might work. – Ded Turtle Jun 29 at 14:33

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