Indoor construction. Construction is independent of weather, which may boost work efficiency and avoids damaged construction material.
Modular buildings may also contribute to LEED requirements in any kind site-built structure can, and can even supply an edge in the areas of Sustainable websites, Energy and Atmosphere, Materials and Resources, and Indoor Environmental Quality. Modular construction may also provide an edge in similar categories from the International Green Construction Code.
Ability to service remote locations. Especially in countries in which prospective markets might be located far from industrial centers, such as Australia, there may be much higher costs to build a in-house property in a remote area or an area experiencing a building boom like mining cities. Modular buildings can also be beneficial in providing medical and sanitary facilities where space, time, and money are a problem.
Environmentally friendly building process. Modular construction reduces waste and site disturbance in contrast to site-built structures. The controlled environment of the factory allows for more precise structure while permitting the extra materials to be recycled in house. 
Modular buildings are argued to have benefits over conventional buildings, for a variety of reasons.
Quality. Mixing traditional construction methods, quality manufacturing and third party agencies who offer arbitrary inspections, testing, and certification solutions for quality management, commercial modular buildings are built in strict compliance with appropriate local, state, and federal regulations and codes. Due to the requirement to transport modules to the final website, each module has to be built to independently withstand traveling and setup requirements. Thus the closing module-to-module assembly of independently durable elements can yield a final product which is stronger than site-built constructions. Modular buildings often utilize Structural Insulated Panels (SIPs) in construction, which provide a range of benefits over traditional construction materials. They are air-tight, and as such provide excellent thermal performance. They also provide superior moist and cold resistance when compared to timber and other substances, and are immune to both compression decreasing and cold bridging.  Modular units might also be made to match in with external aesthetics of any present building and modular units after constructed can be almost indistinguishable from a site-built construction.
Improved Air Quality - Many of the indoor air quality problems identified in new structure result from elevated moisture levels in the farming materials. Since the modular construction is substantially finished in a factory-controlled setting using dry materials, the potential for elevated levels of moisture being trapped inside the new structure is eliminated.
Flexibility. An individual can continually add to your modular building, including creating high rises. When the needs alter, modular buildings can be disassembled and the modules relocated or refurbished for their next usage reducing the demand for raw materials and minimizing the amount of energy expended to create a building to meet the new demand. Essentially, the entire building could be recycled in some cases.
Modular construction permits for the building and the site work to be performed concurrently. According to some substances, this can decrease the total completion schedule by up to 50%. This reduces labor, financing and supervision expenses. To save even more time and money, the majority of design and engineering disciplines are a part of the manufacturing procedure. During site-built construction, walls can't be placed until flooring are in position, and ceilings and rafters can't be added until walls are erected. On the other hand, with modular structure, walls, floors, ceilings, and rafters are all built at the same time, then brought together at precisely the exact same factory to form a construction. This process can enable modular construction times of half that of traditional, stick-built construction.
Low waste. With the very same programs being constantly built, the producer has records of exactly what amount of substances are necessary for a given job. With the consistency, most builders can design systems which use common lengths of timber, wallboard, etc.. cut things with maximum efficiency, or be able to order special spans in bulk. While waste from a site-built residence may generally fill several big dumpsters, building of a modular house creates much less waste. As stated by the UK group WRAP, up to a 90% decrease in substances can be achieved via using modular structure.