The phrase refers to a final set of drawings or documents reflecting the actual conditions and specifications of a completed construction project. These records incorporate any and all deviations, modifications, and field changes implemented during the building process. For example, if a plumbing line had to be rerouted during construction due to an unforeseen obstacle, the corrected location would be accurately depicted in these documents.
Its significance lies in providing an accurate historical record for future maintenance, renovations, and expansions. Having a precise understanding of the ‘as it exists’ state of a structure avoids potentially costly and time-consuming guesswork during subsequent phases of a building’s lifecycle. Historically, inaccuracies in construction documentation have led to significant challenges and expenses; these documents mitigate such risks.