Modular buildings and modular houses are prefabricated houses or buildings that consist of recurrent sections called modules. "Modular" is a construction method that entails assembling sections from the building site, then delivering them to the planned website. Setup of the prefabricated sections is completed on site. Prefabricated sections are occasionally placed using a crane. The modules can be placed side-by-side, finishing, or stacked, allowing a variety of configurations and styles.
Building is offsite, with lean manufacturing techniques to prefabricate single or multi-story structures in deliverable module sections. Permanent Modular Construction (PMC) buildings are produced in a controlled environment and can be constructed of wood, steel, or concrete. Modular components are typically constructed indoors on assembly lines. Modules' construction may take as few as ten days but more often a few months. PMC modules could be incorporated into website constructed projects or stand alone and can be sent with MEP, fixtures and interior finishes.
Permanent modular structures are built to meet or exceed the same construction codes and standards as site-built structures and also the exact same architect-specified materials utilized in conventionally built buildings are traditionally used in modular building jobs. PMC may have as many stories as building codes allow. Unlike relocatable buildings, PMC structures are meant to remain in 1 place for the whole period of their life.
The entire process of modular construction places significance on the design stage. It is vital that there is enough allowance in the design to enable the meeting to take any"idle" or misalignment of elements. This is very unlike onsite construction in which the tradesman can often create the part to suit any particular installation.
The buildings are 60% to 90% completed offsite at a factory-controlled environment, and transported and assembled at the final construction site. This can include the whole building or be components or subassemblies of bigger structures. In many cases, modular builders work with traditional general contractors to exploit the tools and advantages of each form of construction. Finished modules are transported to the construction site and constructed by means of a crane. Positioning of the modules can take from several hours to several days.
Modular buildings may be used for long-term, temporary or permanent facilities, such as construction camps, universities and schools, civilian and military home, and industrial facilities. Modular buildings are employed in rural and remote regions where conventional construction may not be possible or reasonable, for example, the Halley VI lodging pods employed for a BAS Antarctic trip.  Other applications have included churches, healthcare centers, sales and retail offices, quick food restaurants and cruise boat construction. They may also be used in areas that have weather issues, such as hurricanes.
Material for stick built and modular houses will be the same. To begin with, modular homes don't have axles or a metallic frame, meaning they are generally transported on flat-bed trucks. Modular buildings have to conform to all relevant local building codes, while doublewides and mobile homes have metal under framing.
Modular buildings, also referred to as prefabricated homes or precision built homes, are built to equivalent or higher standards as on-site stick-built homes. The building way is known as permanent modular construction.