The cost-effective benefits of modular construction go hand-in-hand with its sustainability. Because buildings are fabricated indoors, materials are protected from the environmental and weather-related damage that commonly occurs on traditional construction sites. This minimizes material waste and maximizes efficient material usage across each stage of production, resulting in a lower overall cost in raw materials. 
An inherent benefit of modular buildings, including portables, is their ability to be reused. When a modular space is no longer needed, it is removed, repurposed, relocated, and used once more. The inspection and refurbishment process for modular buildings can be so efficient that, given the proper attention, buildings can be brought back to near brand-new condition in time for reuse.
Due to the fact that construction occurs off-site, the rapid installation of a modular building causes minimal disturbances to the surrounding environment. In turn, this reduces noise pollution, site wear and tear, and site cleanup.