Low waste. With the very same plans being constantly built, the manufacturer has records of precisely what quantity of substances are necessary for a given job. Together with the consistency, builders can design systems which use common lengths of timber, wallboard, etc., cut things with maximum efficiency, or have the ability to order special spans in bulk. While waste from a site-built residence may generally fill several big dumpsters, construction of a modular house creates much less waste. According to the UK group WRAPup to a 90% decrease in materials can be accomplished via using modular structure.
Flexibility. An individual can add to your modular construction, such as producing high rises. When the needs change, modular buildings may be disassembled and the modules emptied or refurbished for their next use reducing the demand for raw materials and minimizing the total amount of energy expended to make a construction to meet the new demand. Essentially, the entire building could be recycled in some instances.
Quality. Combining traditional building techniques, quality manufacturing and third-party agencies who offer arbitrary inspections, testing, and certification services for quality management, commercial modular buildings are made in strict compliance with appropriate local, state, and national regulations and codes. Due to the requirement to transport modules to the final site, each module must be constructed to independently withstand travel and installation prerequisites. Thus the closing module-to-module assembly of independently durable components can yield a final product that is stronger than site-built structures. They also offer exceptional damp and cold resistance when compared to timber and other substances, and are immune to both compression decreasing and cold bridging.  Modular units may also be made to fit in with external aesthetics of any present building and modular units after assembled can be virtually indistinguishable from a site-built construction.
Environmentally friendly construction procedure. Modular construction reduces waste and site disturbance in contrast to site-built structures. The controlled environment of the factory allows for more precise structure when allowing the extra materials to be recycled in-house. 
Indoor construction. Assembly is different from weather, which can boost work efficiency and averts damaged building material.
Ability to support remote locations. Especially in countries where potential markets may be located far from industrial facilities, such as Australia, there may be much higher prices to build a in-house property in a distant area or a place experiencing a construction boom such as mining cities. Modular buildings can also be beneficial in providing sanitary and medical facilities at which time, space, and funds are an issue.
Modular construction permits 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 reduces labour, financing and oversight expenses. To save even more time and money, nearly all design and engineering disciplines are a part of the production process. Also unique to modular construction is the ability to simultaneously construct a building's floors, walls, ceilings, rafters, and roofs. During site-built structure, walls cannot be placed until flooring are set up, and ceilings and rafters cannot be added until walls are erected. On the flip side, with modular construction, walls, flooring, ceilings, and rafters are all constructed at precisely the same time, and then brought together in the same mill to form a building. This process can enable modular construction times of half an traditional, stick-built structure.
Modular buildings may likewise contribute to LEED conditions in almost any category site-built construction can, and may even supply an advantage in the areas of Sustainable websites, 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.
Improved Air Quality - A lot of the indoor air quality problems identified in new construction result from elevated moisture levels in the framing materials. Because the modular construction is substantially finished in a factory-controlled setting utilizing abrasive materials, the potential for high levels of moisture being trapped inside the new structure is removed.
Modular buildings have been argued to have advantages over conventional buildings, for many different reasons.