What does "modular construction" refer to in homebuilding?

Modular construction in homebuilding specifically refers to factory-built homes that are constructed in modules and then transported to the building site for assembly. These homes are built to comply with the same quality, safety, and zoning codes as site-built homes, ensuring they meet all necessary regulations. This method of construction allows for increased efficiency, reduced construction time, and often better control over building materials and labor costs, as the modules are typically constructed in a controlled factory environment.

The other choices do not accurately reflect the definition of modular construction. For example, houses built without permits would not conform to building codes or regulations and could pose safety risks, making them quite different from modular homes. Additionally, modular homes can indeed be designed as permanent structures or even moved, which negates the idea that they cannot be moved. Lastly, the notion that modular homes are only temporary structures is incorrect, as they can be permanent residences and are built to last just as long as traditional homes.