Prefab

Prefab

Provides items for automatically generating buildings in the world

by
4.2M Downloads
fabricforgeneoforgedecorationworldgen
Rent Server with this Mod

About this Mod

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General Description

Prefab is a collection of functional and aesthetic buildings that you can place into your world instantly!  With our instant houses and structures, you can skip over the time consuming job of landscaping, and trying to build without a creeper undoing your work.  Our preview function lets you see the structure in the world, and move through a projection of it in real time.  Just pick the place you want to put it, and the Prefab Blueprints do the rest!  Whether you haven't got the time, patience or will, we've got structures that are guaranteed to please some of you, but not all of you. :)

Note: Since this has been asked so many times in the past. There are no plans to create a feature for custom blueprints or loading custom structures outside of the ones provided by this mod. 

This functionality already exists with Structurize and we highly recommend it.

Other Important Note

This is the Fabric version of Prefab!

The Forge version of Prefab can be found on CurseForge

Structure Preview

All structure GUIs include a "preview" button. This will create a shadow structure in the world for you to see what it will look like when it's placed. This will give you the opportunity to make sure that you have enough space for the structure or to make sure that it will be placed where you want it to be placed. Block facings for fences, torches and other similar blocks will most likely not have their proper facing when rendered in this fashion, they will look correct when placed.
Note: This functionality was adapted from Botania's Visualize functionality. The mod info and source code has been updated to state as such as well. http://botaniamod.net/license.php.  

Translation Contributors

Thank you to all of the people (found below) which have contributed to the translation of this mod! These translations make this mod more accessible to more people.

Kellixon(Github) - Russian

Snowee(Github) - Chinese (Simplified)

blackblank_1973 (Curse User) - Japanese

Emirhangg (Github) - Turkish

HJ-zhtw(Github) - Chinese (Traditional)

Dqu1J (GitHub) - Russian, Ukrainian

BlackWolf00 (GitHub) - Italian

PinguinmikeGamer (Discord) - German

Google Translate - French, Spanish

Kettumasa (Discord) - Finnish

Contributing Structures

If you want to contribute a cool custom structure for others to enjoy we have some guidelines.

You must use vanilla blocks or blocks added through this mod. If you think you need a custom block for the design let us know and we can create that too.
We reserve the right to change the design as necessary for balance or aesthetics.
If you want, you will be credited for contributions on the mod page.
Provide your sample world through a standard file sharing site such as DropBox or Google Drive.
Send a message with a link to your saved world to WuestMan.
Provide a description of this building. What would it be used for or is this just a aesthetic building?
In The Works   

Notes

Feel free to use this mod in any Modpack, we just ask that you please link back to this mod page in your description.

Available Versions

Prefab-Fabric 7.1.0release
MC 26.2fabric
August 21, 2026
Prefab-NeoForge 2.1.0release
MC 26.2neoforge
August 21, 2026
Prefab-Fabric 7.0.0release
MC 26.1.2fabric
August 19, 2026
Prefab-NeoForge 2.0.0release
MC 26.1.2neoforge
August 19, 2026
Prefab-Fabric 6.3.0release
MC 1.21.11fabric
August 6, 2026

How to Install Prefab on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.2).

3

Install Mod

Open the mod browser in the dashboard and search for "Prefab". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

26.2, 26.1.2, 1.21.11 (+16 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Prefab server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (26.2). You can switch loaders with one click in the panel.

Is Prefab compatible with fabric and forge and neoforge?

Prefab officially supports fabric, forge, neoforge for Minecraft 26.2, 26.1.2, 1.21.11. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Prefab – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Prefab consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Prefab with just one click on your server.

Recommended RAM
6 GBfrom €7.800000000000001/mo
Minimum 4 GB | per 5 players
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

26.226.1.21.21.111.21.81.21.41.21.11.20.61.20.11.19.31.19.2+9 more