No Structure Overlap
by Garakrral
No Structure Overlap is a server-side optimization mod that stops generated structures from spawning inside one another during world generation.
What it does
The mod checks the bounds of each structure while the world generates and cancels any placement that would collide with one already there, so two structures do not try to occupy the same space.
Collision checks are handled as the chunks load, with little memory use, which the author describes as adding no measurable tick-rate drop or server lag. Smart filtering recognizes multi-part structures such as villages, mineshafts and jigsaw-based structures from other mods, so those can still expand normally without being chopped up. The mod works out of the box with a structure mod datapack, though the author notes some setups may need a complex configuration.
It is built with Architectury and supports Fabric, Forge, NeoForge and Quilt natively. Files cover 1.20.1, 1.21.1 and 26.2, and the code is under the GNU General Public License v3.0 only, so it is open source. Only the server needs the mod; players can join without installing it.
Key features
Bounds checks during generation
Each structure's bounds are compared with existing structures while the world generates, and conflicting placements are cancelled.
Multi-part structure filtering
Villages, mineshafts and jigsaw-based structures are filtered so they keep their full shape instead of being cut apart.
Low-overhead collision handling
Collision checks use minimal memory and aim for no noticeable effect on server tick rate.
Datapack compatibility
Works with structure mod datapacks, with an optional configuration for setups that need more control.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Structurify - Structure Control is a client and server mod for Fabric, Forge, NeoForge and Quilt, covering 1.20 – 26.3, under a custom license that is not open source. Limited Structures is server-side only for Forge and NeoForge, covering 1.20.1 – 1.21.1, under All rights reserved. Command Structures is server-side only for Fabric, Forge, NeoForge and Quilt, covering 1.18.1 – 26.3, and is open source under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| No Structure Overlap | Fabric, Forge, NeoForge and Quilt | 1.20.1 – 26.2 | Server required, client optional | 2026-08-29 |
| Structurify - Structure Control | Fabric, Forge, NeoForge and Quilt | 1.20 – 26.3 | Client and server | 2026-10-12 |
| Limited Structures | Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2026-03-08 |
| Command Structures | Fabric, Forge, NeoForge and Quilt | 1.18.1 – 26.3 | Server-side only | 2026-09-15 |
Questions
Does No Structure Overlap need Fabric API?
Does the mod have to be installed on the client?
Which loader should be chosen?
In the catalog
No Structure Overlap is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 13,894 mods support Minecraft 26.2.
More from Garakrral
Similar mods
What the author says
No Structure Overlap is a lightweight performance mod that fixes structure collision chaos when playing with multiple structure mods or datapacks. Without this mod, custom dungeons, castles, and vanilla structures often generate directly inside one another, cutting off rooms, clipping terrain, and destroying loot…
Official listing
- Modrinth page
- modrinth.com/mod/no-structure-overlap
- Owner
- Garakrral
- Published
- 2026-08-26
- Updated on Modrinth
- 2026-08-29
- Facts verified
- 2026-10-15