Modular construction can also give an edge in similar classes from the International Green Construction Code.
Low waste. With the same programs being constantly built, the manufacturer has records of precisely what quantity 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 efficacy, or have the ability to order exceptional spans in bulk. While waste from a site-built residence may generally fill several large dumpsters, construction of a modular house creates much less waste. As stated by the UK group WRAP, up to a 90% decrease in materials can be accomplished via using modular structure.
Environmentally friendly building process. The controlled environment of the factory allows for more accurate construction when allowing the extra stuff to be recycled in-house. 
Improved Air Quality - Many of the indoor air quality problems identified in new structure result from elevated humidity levels from the farming materials. Because the modular construction is substantially finished in a factory-controlled setting using dry materials, the prospect of high levels of moisture being trapped inside the new construction is removed.
Indoor construction. Construction is different from weather, which can boost work efficiency and avoids damaged construction material.
Ability to service remote locations. Particularly in countries in which prospective markets may be found far from industrial centers, such as Australia, there may be much higher prices to build a in-house property in a distant area or an area experiencing a building boom like mining cities. Modular buildings can also be beneficial in providing medical and sanitary facilities at which space, time, and money are an issue.
Flexibility. One can add to your modular construction, including producing high rises. When the needs change, modular buildings may be disassembled and the modules emptied or refurbished to their next use reducing the demand for raw materials and minimizing the total amount of energy expended to make a building to meet the new need. Essentially, the entire construction could be recycled in some cases.
Quality. Mixing traditional construction techniques, quality manufacturing and third party agencies that provide random inspections, testing, and certification services for quality control, commercial modular structures are built in strict compliance with appropriate local, state, and federal regulations and codes. Due to the need to transport modules to the last website, each module must be built to independently withstand traveling and setup requirements. Thus the final module-to-module assembly of independently durable components can yield a last product that is stronger than site-built structures. Modular buildings often utilize Structural Insulated Panels (SIPs) in construction, which offer a range of benefits over traditional construction materials. SIPs panels are a light yet lasting mix of board and closed-cell polyurethane (PU) or expanded polystyrene (EPS) insulating foam. They also provide superior damp and cold immunity when compared to wood and other substances, 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 construction and modular units once assembled can be virtually indistinguishable from a site-built construction.
Modular construction allows for the construction and the site work to be completed simultaneously. According to some materials, this can decrease the total completion schedule by as much as 50%. This also reduces labor, financing and supervision expenses. To save even more time and money, the majority of design and engineering disciplines are part of the manufacturing procedure. During site-built construction, walls cannot be placed until flooring are in position, and ceilings and rafters cannot be added until walls are erected. On the flip side, with modular structure, walls, flooring, ceilings, and rafters are all built at precisely the same time, and then brought together in precisely the exact same mill to form a building. This procedure can enable modular construction times of half that of conventional, stick-built structure.
Modular buildings have been argued to have benefits over conventional buildings, for a variety of factors.