Structure Expansion Mod is a Minecraft mod that increases the size limit of vanilla structure blocks. In earlier versions, it expanded the limit from 48x48x48 to 127x127x127, but in later versions, it extended it even further to 256x256x256. Additionally, it enhances the fill command and introduces a new command to remove air blocks from structure files.
Features:
- Increases the size limit from 48x48x48 to 256x256x256, allowing for much larger builds.
- Expands the capabilities of the fill command, making it more powerful.
- Introduces a command (
/structure clean <name>) to remove air blocks from saved structures, making them more efficient.
Screenshots:
Structure Expansion Mod Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Downloads as 28497.mcaddon
- Download size: 24 KB
- Download link checked 23 Sept 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.