Use this Modular Building Plugin for Unreal Engine for Quick Modular construction of Buildings. By using the grids boxes easily create Floor and walls.
Tutorial on How to use the Modular Building Plugin
Modular Labaratore Work Example
Building Tools for Unreal Engine
This is a bundle with tools for building levels faster. Houdini will be required to use the tools. (Install the Houdini plug-in for Unreal Engine). It includes – Corridor builder tool, Hanging cables, Ivy generator, Pipe tool.