Modular buildings may likewise contribute to LEED requirements in any category site-built construction can, and may even provide an advantage in the fields of Sustainable Sites, Energy and Atmosphere, Materials and Resources, and Indoor Environmental Quality. Modular construction may also provide an advantage in similar classes from the International Green Construction Code.
Indoor construction. Assembly is independent of weather, which may increase work efficiency and averts damaged construction material.
Ability to service remote locations. Particularly in countries where prospective markets might be found far from industrial facilities, such as Australia, there can be much higher costs to build a site-built house in a distant area or a place experiencing a building boom such as mining towns. Modular buildings are also beneficial in providing medical and sanitary facilities where time, space, and funds are an issue.
Low waste. With the very same plans being continuously built, the manufacturer has records of exactly what amount of materials are necessary for a specified job. With the consistency, builders can design systems that use common lengths of timber, wallboard, etc.. cut items with maximum efficiency, or be able to order special 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. According to the UK group WRAPup to a 90% reduction in substances can be accomplished through the use of modular construction.
Quality. Combining traditional building methods, quality manufacturing and third party agencies that provide random inspections, testing, and certification services for quality management, commercial modular buildings are built in strict compliance with appropriate local, state, and federal regulations and codes. Due to the need to transport modules to the final website, each module has to be built to independently withstand travel and setup requirements. Thus the final module-to-module meeting of independently durable elements can yield a last product that is more durable than site-built structures. Modular buildings frequently utilize Structural Insulated Panels (SIPs) in construction, which offer a range of benefits over traditional building materials. SIPs panels are a mild yet lasting combination of board and closed-cell polyurethane (PU) or expanded polystyrene (EPS) insulating foam. They're air-tight, and as such provide excellent thermal performance. They also offer exceptional moist and cold resistance when compared to timber and other materials, and are resistant to both compression shrinking and cold bridging.  Modular units might also be made to match in with outside aesthetics of any present construction and modular units once assembled can be almost indistinguishable from a site-built construction.
Improved Air Quality - A lot of the indoor air quality problems identified in new structure result from elevated humidity levels from the framing materials. Since the modular structure is substantially completed in a factory-controlled setting using abrasive materials, the potential for elevated levels of moisture being trapped inside the new construction is removed.
Flexibility. An individual can add to a modular construction, including producing high rises. When the demands alter, modular buildings may 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 building to meet the new demand. Essentially, the entire construction could be recycled in some cases.
Modular buildings have been argued to have benefits over conventional buildings, for many different reasons.
Environmentally friendly building 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 permitting the extra materials to be recycled in-house. 
Speed of construction/faster return on investment. Modular construction allows for the building and the site work to be performed concurrently. According to some substances, this can reduce the total completion schedule by up to 50%. This also reduces labor, financing and oversight costs. To save time and money, nearly all design and engineering disciplines 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 construction, walls cannot be set until floors are set up, and ceilings and rafters can't be added till walls are erected. On the flip side, with modular construction, walls, flooring, ceilings, and rafters are all built at the same time, then brought together in the exact same mill to form a building. This procedure can allow modular construction times of half that of conventional, stick-built structure.