Modular construction may also provide an edge in similar categories in the International Green Construction Code.
Environmentally friendly construction procedure. The controlled environment of the mill allows for more precise structure while permitting the extra stuff to be recycled in-house. 
Indoor construction. Assembly is independent of weather, which can increase work efficiency and avoids damaged construction material.
Flexibility. An individual can continually add to a modular construction, such as creating high rises. When the needs alter, modular buildings may be disassembled and the modules emptied or refurbished for their next use reducing the requirement for raw materials and minimizing the amount of energy expended to create a building to fit the new demand. Essentially, the whole building can be recycled in some cases.
Improved Air Quality - Many of the indoor air quality problems identified in new structure result from high humidity levels from the framing materials. Since the modular construction is substantially completed in a factory-controlled setting using dry materials, the prospect of elevated levels of moisture being trapped in the new structure is removed.
Modular buildings have been argued to have benefits over conventional buildings, for many different reasons.
Quality. Combining traditional building methods, quality manufacturing and third-party agencies who provide arbitrary inspections, testing, and certification solutions for quality management, commercial modular buildings are made in strict compliance with appropriate local, state, and federal rules and regulations. Due to the need to transport modules to the final site, each module has to be constructed to independently withstand travel and setup prerequisites. Thus the final module-to-module assembly of independently durable components can yield a last product which is stronger than site-built constructions. SIPs panels are a light yet durable mix of board and closed-cell polyurethane (PU) or expanded polystyrene (EPS) insulating foam. They're air-tight, and as such provide exceptional thermal performance. They also offer superior damp and cold immunity when compared to timber and other substances, 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 structure.
Modular construction allows for the construction and the site work to be completed simultaneously. According to some substances, this can decrease the overall completion schedule by as much as 50%. This reduces labor, financing and supervision costs. To save time and money, the majority of design and engineering disciplines are part of the manufacturing procedure. Also unique to modular construction is the capacity to simultaneously construct a building's floors, walls, ceilings, rafters, and roofs. During site-built structure, walls can't be placed until flooring 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 built at precisely the 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.
Low waste. With the same plans being constantly built, the producer has records of precisely what amount of substances are needed for a specified job. Together with the consistency, builders can design systems that use common lengths of lumber, wallboard, etc.. cut items with maximum efficiency, or have the ability to order exceptional lengths in bulk. While waste from a site-built dwelling may typically fill several large dumpsters, construction of a modular dwelling generates much less waste. As stated by the UK group WRAPup to a 90% decrease in materials can be accomplished via the use of modular construction. Materials minimized include: wood pallets, shrink wrap, cardboard, plasterboard, wood, concrete, bricks, and cement.
Ability to support remote locations. Particularly in countries in which potential markets may be found far from industrial facilities, such as Australia, there may be a lot higher costs to build a site-built house in a remote area or an area experiencing a construction boom like mining cities. Modular buildings can also be beneficial in providing medical and sanitary facilities where time, space, and money are a problem.