Huge Structure Blocks [Fabric & Forge]
I don't know my version or loader
Note: I am currently updating old versions to include the new optimisations and limit removals.
Huge Structure Blocks
Huge structure blocks increases the maximum structure block size and corner search radius to 512 blocks. Render of the bounding box is also increased to 256 blocks.
In short:
- Increases maximum structure size to 512 blocks.
- Increases render distance of structure bounding box to 256 blocks.
- Optimises the corner search algorithm
- Maintains a cache of structure block corners that allows for instant resolving.
- Removes the Jigsaw depth limit.
- Removes the 128 block distance limit from structure features/pools.
- Adds a creative item group for structure block items.
HSB's corner search resolves instantly versus Vanilla which takes seconds (sometimes even crashes). This is particularly useful on build servers where players have access to create structures.
Example

Bugs, issues, questions
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Bugs, issues, and similar should be reported on our issue tracker.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20.1, 1.21.11, 1.21
- 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: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as huge-structure-blocks-1.0.9-forge.jar — drop this file into the mods folder
- Download size: 95 KB
- Download link checked 27 Aug 2026 — working
These come from our own check of the pack file, not from the source page.
