Portable office buildings are portable buildings that are primarily used to serve as office spaces. Portable buildings are buildings that can be moved or carried from one location to another. They are particularly handy when there is a temporary need for office space.

However, these buildings have also been used extensively in not-so-temporary situations. The cost advantages that come with using these portable buildings have contributed to their growing popularity.

Portable office buildings do not resemble the builders sheds that they once were at many construction sites. By attending to detail, they have become office buildings that attach importance to the general appearance, apart from specifics like the color, air conditioning, lighting, spaciousness, and carpeting. Portable office buildings come with many amenities for staff and the visiting public. While there are single, standalone units, there are also multi-modular complexes. There are even double-storey buildings with minimal disturbance to the natural environment surrounding them.

Most portable office buildings are metal structures, though some do use wood. Most use a thick gauge of galvanized steel or aluminum. These buildings are sturdy and are constructed to withstand the vagaries of nature like hurricanes, heavy rains, and blizzards. The installation of these portable buildings is relatively easy, and so, too, is the dismantling process.

Most suppliers of portable office buildings take up the business as turnkey projects. The design, construction, and delivery of custom-made office buildings require a greater amount of client interaction than what is required for modular office buildings. The rising cost of building materials and labor, coupled with unpredictable weather conditions, have contributed to portable office buildings becoming a viable alternative to conventional office buildings.