It's just a normal house :)

You wanna make this an actual legit house? Just turn on cheats on the server, copy & paste this command,

Give @p minecraft:barrier

and place them on every exposed side of the water, you'll get a house that rich people got.

Quick question, can you show the version of the command that gives a stack of Barrier Blocks?

Give @p minecraft:barrier 64

Thanks. Now, I will share my knowledge. The "More TNT!" Add-On contains some good TNT, and adds Ultra Powder, used to craft these TNT. It introduces a handheld nuke called Throwable TNT that can be thrown and stacked on top of each other. It is mesmerizing if you can get these to form a perfect circle underwater. OK, back to the point. Throwable TNT can break the physics of Minecraft by creating unpatchable air pockets underwater. What I mean by unpatchable is that water can't flow into the pocket, making room for a good underwater base.

I feel like I've seen an old video waaaayy back in the day about this mod.

Yeah but Mojang put Add-Ons into the game, and the More TNT! add-on is one of the free add-ons you can get.

Well, able to be purchased for free when the update first dropped tho

Wait this works in Bedrock, right?

Tested and proved.

Ok, thanks. I doubted you because I never used commands other than the Quick Commands, like Teleport Player, Set World Spawn, and Set Time of Day.

anytime.

How? HOW TF DID YOU MADE THIS HOUSE???

I made a cube with structure void and built a structure void wall around it and added a door and water

Oh... Nice

impressive. perfect for merplayers

ah yes, very normal