Controlled Construction
by BearWarrior
Controlled Construction lets players place blocks along measured lines and planes, with a visual cue for each measurement, when building by hand in survival or creative.
What it does
Players hold V to measure distances: a first press records a location where the player is looking, and releasing V on a second point reports the height, length, width, vertical and diagonal lengths and horizontal diagonal length. Each step leaves a colored particle cue on the block, and a cow bell sound marks the moment the first point is recorded.
Four building modes are available, and the G key switches the mode, with a second press turning it off. A Y-Lock mode restricts placement to the Y level of the block recorded below the player, and a second Y press turns it off. A force direction setting pins placement to up or down, north or south, or east or west. Pressing R forcibly rotates a block as it is placed, which helps with directional blocks such as logs.
The mod runs on the client only, so players install it themselves and servers do not need it. It is published for Forge and NeoForge, with release files for 1.20.1, 1.21.1, 1.21.4 and 1.21.5 across the 1.20.1 – 1.21.5 range. The license is the MIT License, and the code is not open source.
Key features
Distance measurement
Holding V records two points and reports height, length, width, vertical and diagonal lengths on screen.
Four building modes
The G key turns building modes on and off, giving the player a set of placement rules to choose from.
Y-Lock placement
Y-Lock confines placed blocks to the level of the block recorded below, so flat layers stay even.
Forced direction and rotation
A direction setting pins placement to an axis, and R rotates the block being placed, useful for logs and stairs.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players building by hand in survival or creative who want placement help, such as measured spans or level layers. It is a client-side mod, so it needs no server setup.
How it compares
Merged Blocks is a Forge mod for 1.20.1 under a Creative Commons Attribution Non Commercial No Derivatives 4.0 license, and it is not open source. Better Builders Wands is a Forge mod for 1.7.10 – 1.12.2 under All rights reserved, and it is not open source. Controlled Construction is a client-side mod for 1.20.1 – 1.21.5 under the MIT License, so the two differ in version range and license.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Controlled Construction | Forge and NeoForge | 1.20.1 – 1.21.5 | Client-side only | 2025-06-22 |
| Merged Blocks | Forge | 1.20.1 | Client and server | 2026-02-03 |
| Better Builders Wands | Forge | 1.7.10 – 1.12.2 | Client and server | 2025-05-12 |
Questions
Does Controlled Construction need to be installed on the server?
Which loaders does Controlled Construction support?
Can the Y-Lock be turned off?
In the catalog
Controlled Construction is one of 3,545 Optimization mods on ModsFinder, and one of 1,441 Optimization mods for Forge. 15,307 mods support Minecraft 1.21.5.
More from BearWarrior
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What the author says
# Make building easier through this 1.21.4 mod utilized as a building tool! You have the ability to press R to forcibly rotate every block you place, making it much easier to work with directional blocks like logs. - There are four modes: Force Direction Off, Up/Down, North/South, and East/West
Official listing
- Modrinth page
- modrinth.com/mod/controlled-construction
- Owner
- BearWarrior
- Published
- 2024-11-30
- Updated on Modrinth
- 2025-06-22
- Facts verified
- 2026-10-15