Indoor construction. Assembly is different from weather, which can increase work efficiency and averts damaged construction material.
Improved Air Quality - A lot of the indoor air quality problems identified in new structure result from high moisture levels in the framing materials. Because the modular construction is substantially completed in a factory-controlled setting using dry materials, the potential for elevated levels of moisture being trapped inside the new construction is eliminated.
Modular construction can also give an advantage in similar classes from the International Green Construction Code.
Ability to support remote locations. Particularly in countries where prospective markets may be located far from industrial centers, such as Australia, there may be a lot higher costs to build a in-house property in a distant area or a place experiencing a building boom such as mining towns. Modular buildings can also be beneficial in providing medical and sanitary facilities at which time, space, and money are a problem.
Quality. Combining traditional building techniques, quality manufacturing and third party agencies that offer arbitrary inspections, testing, and certification services for quality control, commercial modular structures are made in strict accordance with appropriate local, state, and national regulations and codes. On account of the need to transport modules to the final website, each module has to be constructed to independently withstand traveling and installation prerequisites. Thus the closing module-to-module assembly of independently durable elements can yield a last product that is more durable than site-built constructions. Modular buildings frequently use Structural Insulated Panels (SIPs) in construction, which offer a range of advantages over traditional construction materials. They're air-tight, and as such provide exceptional thermal performance. They also offer exceptional damp and cold resistance when compared to timber and other materials, and are immune to both compression shrinking and cold bridging.  Modular units may also be designed to match in with external aesthetics of any existing building and modular units after constructed can be virtually indistinguishable from a site-built construction.
Environmentally friendly construction procedure. The controlled environment of the factory allows for more accurate construction while permitting the extra stuff to be recycled in-house. 
Low waste. With the same plans being continuously built, the producer has records of precisely what amount of materials are needed for a specified job. With the consistency, builders can design systems that use common lengths of lumber, wallboard, etc., cut things with maximum efficacy, or be able to order exceptional spans in bulk. While waste from a site-built dwelling may typically fill several large dumpsters, building of a modular dwelling generates much less waste. According to the UK group WRAP, up to a 90% decrease in substances can be achieved via the use of modular structure.
Modular buildings have been argued to have advantages over traditional buildings, for a variety of reasons.
Modular construction permits for the building and the site work to be performed simultaneously. According to some materials, this can reduce the overall completion schedule by up to 50%. This reduces labor, financing and oversight expenses. To save even more time and money, the majority of design and engineering disciplines are a part of the production 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 construction, walls, floors, ceilings, and rafters are all constructed at the exact same time, then brought together in the same factory to form a building. This process can enable modular building times of half that of conventional, stick-built structure.
Flexibility. One can add to a modular construction, such as creating high rises. When the demands alter, modular buildings can be disassembled and the modules relocated or refurbished for their next use reducing the requirement for raw materials and minimizing the amount of energy expended to make a construction to meet the new need. Essentially, the whole construction could be recycled in some cases.