Modular construction can also provide an advantage in similar classes in the International Green Construction Code.
Environmentally friendly construction process. Modular construction reduces waste and site disturbance in contrast to site-built structures. The controlled environment of the mill allows for more accurate construction while allowing the extra materials to be recycled in-house. 
Indoor construction. Assembly is independent of weather, which can boost work efficiency and averts damaged building material.
Quality. Mixing traditional construction techniques, quality manufacturing and third-party agencies that provide random inspections, testing, and certification solutions for quality control, commercial modular buildings are made in strict accordance with appropriate local, state, and national rules and regulations. On account of the need to transport modules to the last site, each module must be built to independently withstand travel and setup prerequisites. 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 frequently utilize Structural Insulated Panels (SIPs) in construction, which offer a range of benefits over traditional construction materials. SIPs panels are a light yet durable combination of panel board and closed-cell polyurethane (PU) or expanded polystyrene (EPS) insulating foam. They're air-tight, and as such provide excellent thermal performance. They also offer exceptional damp and cold resistance when compared to wood and other materials, and are immune to both compression shrinking and cold bridging.  Modular units might also be made to fit in with outside aesthetics of any present building and modular units after assembled can be virtually indistinguishable from a site-built construction.
Ability to service remote locations. Especially in countries in which potential markets may be found far from industrial facilities, 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 such as mining cities. Modular buildings can also be beneficial in providing sanitary and medical facilities where space, time, and money are a problem.
Improved Air Quality - A lot of the indoor air quality issues identified in new structure result from elevated moisture levels in the farming materials. Since the modular structure is substantially finished in a factory-controlled setting utilizing abrasive materials, the prospect of high levels of moisture being trapped in the new structure is eliminated.
Modular buildings have been argued to have benefits over traditional buildings, for a variety of factors.
Low waste. With the very same plans being constantly built, the manufacturer has records of exactly what quantity of substances are necessary for a specified job. Together with the consistency, most builders can design systems that use common lengths of lumber, wallboard, etc.. cut things with maximum efficiency, or have the ability to order exceptional spans in bulk. While waste 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% reduction in substances can be achieved via the use of modular structure. Materials minimized include: wood pallets, shrink wrap, cardboard, plasterboard, timber, concrete, bricks, and cement.
Flexibility. One can continually add to your modular construction, including producing high rises. When the demands change, modular buildings may be disassembled and the modules relocated or refurbished to their next use reducing the demand for raw materials and minimizing the amount of energy expended to make a building to meet the new need. Essentially, the whole building can be recycled in some cases.
Speed of construction/faster return on investment. Modular construction permits for the building and the site work to be performed simultaneously. According to some substances, this can reduce the total completion schedule by up to 50%. This also reduces labour, financing and supervision costs. To save even more time and money, the majority of engineering and design areas are part of the manufacturing process. Also unique to modular structure is the capacity to simultaneously construct a building's floors, walls, ceilings, rafters, and roofs. During site-built structure, walls cannot be set until floors are in position, and ceilings and rafters can't be added until walls have been erected. On the flip side, with modular construction, walls, flooring, ceilings, and rafters are all constructed at the exact same time, and then brought together at precisely the same factory to form a construction. This procedure can allow modular construction times of half that of traditional, stick-built construction.