Environmentally friendly building procedure. Modular construction reduces waste and site disturbance compared to site-built structures. The controlled environment of the mill allows for more precise structure when permitting the additional materials to be recycled in house. 
Quality. Combining traditional building techniques, quality manufacturing and third party agencies that offer arbitrary inspections, testing, and certification services for quality management, commercial modular buildings are made in strict compliance with appropriate local, state, and national rules and regulations. On account of the requirement to transport modules to the last site, each module must be built to independently withstand traveling and setup requirements. Thus the final module-to-module meeting of independently durable components can yield a last product that is more durable than site-built structures. Modular buildings often use Structural Insulated Panels (SIPs) in construction, which provide a range of benefits over traditional building materials. SIPs panels are a mild yet lasting mix of panel board and either closed-cell polyurethane (PU) or expanded polystyrene (EPS) insulation. They're air-tight, and as such provide excellent thermal performance. They also provide exceptional moist and cold resistance when compared to timber and other substances, and are resistant to both compression decreasing and cold bridging.  Modular units might also be made to fit in with outside aesthetics of any existing construction and modular units once constructed can be almost indistinguishable from a site-built construction.
Flexibility. An individual can continually add to a modular construction, including producing high rises. When the demands change, modular buildings can be disassembled and the modules relocated or refurbished for their next usage reducing the requirement for raw materials and minimizing the total amount of energy expended to make a construction to meet the new demand. Essentially, the whole construction could be recycled in some instances.
Modular buildings have been argued to have benefits over traditional buildings, for a variety of factors.
Improved Air Quality - Many of the indoor air quality problems identified in new construction result from elevated moisture levels in the framing materials. Since the modular structure is substantially completed in a factory-controlled setting using abrasive materials, the potential for high levels of moisture being trapped inside the new construction is eliminated.
Low waste. With the same plans being constantly built, the manufacturer has records of precisely what amount of materials are necessary for a specified job. Together with the consistency, most builders can design systems which use common lengths of lumber, wallboard, etc., cut things with maximum efficacy, or be able to order special spans in bulk. While squander from a site-built dwelling may typically fill several big dumpsters, construction of a modular house creates much less waste. According to the UK group WRAPup to a 90% reduction in substances can be accomplished via the use of modular construction.
Modular buildings may also contribute to LEED conditions in almost any kind site-built structure may, and can even supply an advantage in the fields of Sustainable Sites, Energy and Atmosphere, Materials and Resources, and Indoor Environmental Quality. Modular construction may also give an advantage in similar classes from the International Green Construction Code.
Ability to support remote locations. Especially in countries in which prospective markets may be found far from industrial facilities, such as Australia, there can be much higher costs to construct a in-house property in a distant area or a place experiencing a construction boom such as mining cities. Modular buildings are also beneficial in providing sanitary and medical facilities where space, time, and money are an issue.
Indoor construction. Construction is different from weather, which may boost work efficiency and avoids damaged building material.
Modular construction allows for the construction and the site work to be completed simultaneously. According to some materials, this can reduce the total completion schedule by as much as 50%. This also reduces labor, financing and supervision costs. To save even more time and money, nearly all design and engineering areas are part of the manufacturing process. During site-built construction, walls cannot 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 constructed at the exact same time, then brought together in precisely the exact same factory to form a building. This procedure can enable modular building times of half an traditional, stick-built structure.