Home manufacturing companies construct triple-wide modular homes in three pieces and transport the pieces to the building site, where they assemble them into the final product. The assembly of a triple-wide home may be accomplished in a single day. Finishing work, such as the installation of carpets, flooring and lighting fixtures, may take longer. After each piece is securely in place, a home inspector makes sure the home is safe for occupancy.
First, a modular home architect designs the triple-wide home according to U.S. state and federal building codes. Because builders sometimes transport modular homes over state lines, architects must ensure the blueprints conform to different local housing codes
After the design process is complete, the manufacturer builds the home in a factory, which ensures that poor weather does not affect the building schedule. For this reason, modular home building schedules are often more reliable than on-site schedules. At the building site, contractors dig and pour a foundation designed to meet the modular home's specifications.
The manufacturer transports the finished pieces of the modular home to the building site. Larger homes, such as triple-wide homes, require multiple trucks for transportation. At the site, builders use cranes to put each section of the home into position on the foundation. Because these homes are attached to foundations, they cannot be moved like other manufactured homes.