Structure Expansion
by Sunekaer
Structure Expansion raises the size limit of vanilla structure blocks and adds a command for cleaning air out of saved structure files.
What it does
Vanilla structure blocks cap saves at 48x48x48. With this mod the limit rises to 127x127x127, and a larger option raises it to 256x256x256. Both sides need the mod, since structures are saved and loaded on the server and every player's client.
The mod is published for Forge and NeoForge across 19 release versions, 1.16.1 – 26.3, and is released under the MIT License. It is not open source. The latest Forge file targets 1.20.4, and the latest NeoForge file targets 26.3.
Key features
Larger structure blocks
Structure blocks can save areas up to 127x127x127 blocks instead of the vanilla 48x48x48 limit.
Extended 256 size option
A further option raises the structure block limit to 256x256x256 for very large builds.
Air cleaning command
The /structure clean command removes air blocks from a saved structure file, using its name as the argument.
Compatibility
Latest build for each game version and loader.
26.x3 of 3 versions with builds
1.21.x2 of 2 versions with builds
1.20.x3 of 3 versions with builds
1.19.x5 of 5 versions with builds
1.18.x2 of 2 versions with builds
1.16.x4 of 4 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Required by 3 mods
Questions
Does Structure Expansion need to be installed on the server?
In the catalog
Structure Expansion is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 8,071 mods support Minecraft 26.3.
More from Sunekaer
Similar mods
What the author says
Small mod that Increases the size limit of the vanilla structure blocks Increases the size limit of the structure block from 48x48x48 to 127x127x127
Official listing
- Modrinth page
- modrinth.com/mod/structure-expansion
- Owner
- Sunekaer
- Published
- 2022-11-13
- Updated on Modrinth
- 2026-09-20
- Facts verified
- 2026-10-15