World Height Limit

Increase Minecraft's build height with an automatically generated datapack. World Height Limit raises the top of the world and, on Bukkit-based servers, lets you decide who can build above the vanilla limit. The default target is Y=2031, and the height can be changed in the configuration.

The project includes a server plugin for Bukkit, Spigot, Paper, Purpur and Folia, plus separate Fabric and NeoForge beta mods for singleplayer worlds and dedicated servers.

Supported Minecraft versions

Platform	Version ranges
Bukkit / Spigot / Paper / Purpur	1.17.x, 1.18.x, 1.19.x, 1.20–1.20.4, 1.20.5–1.20.6, 1.21.x, 26.1–26.3
Folia	1.19.x, 1.20–1.20.4, 1.20.5–1.20.6, 1.21.x, 26.1–26.3
Fabric beta	1.19.x, 1.20–1.20.4, 1.20.5–1.20.6, 1.21.x
NeoForge beta	1.20.2–1.20.4, 1.20.5–1.20.6, 1.21.x

Choose the download that matches both your Minecraft version and platform. Minecraft 1.20.5–1.20.6 has a separate server plugin build; do not use a JAR from the neighboring version ranges. Fabric requires Fabric API.

What it does

• Generates a datapack in each world save using the format required by that Minecraft version.
• Lets you set a target height and configure the Overworld, Nether and End separately.
• Aligns the generated datapack height to Minecraft's 16-block sections. The server plugin enforces the configured build limit for players.
• Reports the effective generated height and provides commands to inspect world and datapack settings.

Server plugin features

• Permission-based building above the normal vanilla height limit.
• Separate controls for block placing, block breaking and bucket use.
• Configurable permissions, denial messages and notification modes: chat, action bar, title, both or off.
• Admin tools for filling areas and creating platforms.
• Debug commands for height-related diagnostics.

Fabric and NeoForge beta features

• World height expansion for singleplayer worlds and dedicated servers.
• Configuration in config/world-height-limit.json.
• Commands for checking the current height, inspecting worlds and changing the target height. Lowering the height requires confirmation.

Commands and permissions

The server plugin uses /worldheightlimit with these subcommands:

Command	Purpose
/worldheightlimit help	Show available commands
/worldheightlimit reload	Reload restrictions and messages
/worldheightlimit status	Show plugin and world height status
/worldheightlimit debug	Show height and datapack diagnostics
/worldheightlimit worlds	List loaded worlds and their height ranges
/worldheightlimit fill	Fill an area
/worldheightlimit platform	Create a platform around the player

The old /highbuildlimit command remains as an alias. Existing highbuildlimit.* permissions remain valid:

Permission	Purpose
highbuildlimit.bypass	Build above the vanilla limit
highbuildlimit.reload	Reload the plugin configuration
highbuildlimit.status	Use status, debug and worlds
highbuildlimit.fill	Use fill and platform

Fabric and NeoForge beta builds provide /worldheightlimit commands for help, reload, status, debug, worlds, config and setting the target height.

Installation and important notes

1. Back up your world before changing its height.
2. Install the file that matches your Minecraft version and platform. Put the server plugin JAR in plugins/; install Fabric or NeoForge builds as mods.
3. Start the server or world once to generate the datapack. Then fully stop and start it again so Minecraft loads the new height.

A full restart is also required after changing the target height. Reloading the plugin can update restrictions and messages, but it cannot change the height of an already loaded world. Keep the generated datapack installed if you have built above the vanilla limit.

Stable beta mod builds limit the configurable top height to Y=2031. Higher values require a separate experimental build.

Server statistics

The server plugin uses bStats for anonymous usage statistics: view World Height Limit on bStats. Server owners can disable reporting in plugins/bStats/config.yml.

Source code on GitHub