Improved Air Quality - A lot of the indoor air quality problems identified in new structure result from high moisture levels in the farming materials. Because the modular construction is substantially finished in a factory-controlled setting utilizing abrasive materials, the potential for elevated levels of moisture being trapped in the new construction is eliminated.
Modular buildings can likewise contribute to LEED conditions in almost any category site-built structure may, and may even provide an advantage in the areas of Sustainable Sites, Energy and Atmosphere, Materials and Resources, and Indoor Environmental Quality. Modular construction can also provide an edge in similar classes from the International Green Construction Code.
Modular buildings are argued to have benefits over conventional buildings, for a variety of factors.
Quality. Combining traditional building methods, quality manufacturing and third party agencies who offer random inspections, testing, and certification services for quality management, commercial modular structures are made in strict accordance with appropriate local, state, and federal regulations and codes. On account of the need to transport modules to the final site, each module has to be constructed to independently withstand travel and installation requirements. Thus the closing module-to-module meeting of independently durable elements can yield a final product which is more durable than site-built structures. They also offer superior damp and cold resistance when compared to timber and other substances, and are resistant to both compression decreasing and cold bridging.  Modular units may also be designed to match in with external aesthetics of any existing building and modular units once assembled can be virtually indistinguishable from a site-built construction.
Low waste. With the very same plans being constantly built, the producer has records of precisely what amount of substances are necessary for a specified job. With the consistency, most builders can design systems which use common lengths of timber, wallboard, etc., cut items with maximum efficacy, or be able to order exceptional lengths in bulk. While squander from a site-built dwelling may typically fill several big dumpsters, construction of a modular dwelling generates much less waste. As stated by the UK group WRAPup to a 90% decrease in materials can be achieved through using modular construction. Materials minimized include: wood pallets, shrink wrap, cardboard, plasterboard, timber, concrete, bricks, and cement.
Ability to support remote locations. Particularly in countries in which potential markets might be located far from industrial centers, such as Australia, there can be much higher costs to build a site-built house in a remote area or an area experiencing a building boom such as mining cities. Modular buildings can also be beneficial in providing sanitary and medical facilities where time, space, and funds are an issue.
Modular construction allows for the construction and the site work to be completed concurrently. According to some materials, this can reduce the overall completion schedule by up to 50%. This reduces labour, financing and oversight costs. To save even more time and money, the majority of design and engineering disciplines are a part of the manufacturing process. Also unique to modular construction is the ability to simultaneously construct a building's floors, walls, ceilings, rafters, and roofs. During site-built construction, walls cannot be set until floors are set up, and ceilings and rafters can't be added till walls are erected. On the flip side, with modular construction, walls, floors, ceilings, and rafters are all built at the same time, and then brought together at the exact same mill to form a construction. This process can enable modular construction times of half an traditional, stick-built construction.
Indoor construction. Construction is independent of weather, which can boost work efficiency and averts damaged building material.
Environmentally friendly building process. The controlled environment of the factory allows for more accurate construction when permitting the extra stuff to be recycled in house. 
Flexibility. One can continually add to a modular building, including creating high rises. When the demands change, modular buildings may be disassembled and the modules relocated or refurbished to their next usage reducing the demand for raw materials and minimizing the amount of energy expended to make a building to meet the new demand. In essence, the whole construction can be recycled in some instances.