Indoor construction. Construction is independent of weather, which may boost work efficiency and avoids damaged construction material.
Quality. Mixing traditional construction methods, quality manufacturing and third-party agencies who provide arbitrary inspections, testing, and certification services for quality control, commercial modular buildings are made in strict compliance with appropriate local, state, and federal regulations and codes. On account of the requirement to transport modules to the last site, each module has to be built to independently withstand traveling and installation prerequisites. Thus the final module-to-module meeting of independently durable elements can yield a final product which is more durable than site-built constructions. Modular buildings often use Structural Insulated Panels (SIPs) in construction, which provide a range of advantages over traditional building materials. They also offer exceptional moist and cold resistance when compared to timber and other materials, and are immune to both compression decreasing and cold bridging.  Modular units might also be made to match in with outside aesthetics of any present building and modular units once assembled can be virtually indistinguishable from a site-built construction.
Ability to support remote locations. Especially in countries in which potential markets may be located far from industrial facilities, 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 are also beneficial in providing sanitary and medical facilities at which space, time, and funds are an issue.
Flexibility. An individual can 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 use reducing the demand for raw materials and minimizing the amount of energy expended to create a construction to meet the new demand. In essence, the entire construction could be recycled in some cases.
Modular construction may also give an edge in similar categories in the International Green Construction Code.
Environmentally friendly construction process. Modular construction reduces waste and site disturbance compared to site-built structures. The controlled environment of the mill allows for more precise structure when allowing the extra stuff to be recycled in-house. 
Low waste. With the very same plans being continuously built, the manufacturer has records of precisely what amount of substances are necessary for a specified job. With the consistency, most builders can design systems that use common lengths of timber, wallboard, etc., cut items with maximum efficiency, or be able to order special spans in bulk. While squander from a site-built dwelling may typically fill several big dumpsters, building of a modular dwelling generates much less waste. According to the UK group WRAPup to a 90% decrease in substances can be achieved through using modular construction.
Speed of construction/faster return on investment. Modular construction allows for the construction and the site work to be completed concurrently. According to some substances, this can reduce the overall completion schedule by as much as 50%. This also reduces labour, financing and oversight expenses. To save time and money, nearly all engineering and design areas are part of the production procedure. Also unique to modular structure is the ability to simultaneously construct a building's floors, ceilings, walls, rafters, and roofs. During site-built structure, walls cannot be placed until flooring are set up, and ceilings and rafters can't be added till walls are erected. On the other hand, with modular construction, walls, flooring, ceilings, and rafters are all constructed at the exact same time, then brought together in the same factory to form a construction. This process can allow modular building times of half that of traditional, stick-built construction.
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 structure is substantially finished in a factory-controlled setting using dry materials, the prospect of elevated levels of moisture being trapped inside the new construction is removed.
Modular buildings have been argued to have benefits over traditional buildings, for many different reasons.