As-built drawings, sometimes referred to as as-found or record drawings, illustrate the existing physical and operational characteristics of a building based on real-world data collected from the building site itself. Historically, these drawings were created by drafters using tape measures and grid paper. Today, the process of creating as-built drawings involves laser survey equipment, reality capture systems, Computer Assisted Drafting (CAD) and Building Information Modeling (BIM).

Architectural documentation typically encompasses construction drawings, feasibility plans, permit plans, mechanical, electrical and plumbing (MEP) layouts, elevations, sections, renderings, CAD, and BIM models. These documents usually signal design intent, illustrating how an Architect, Engineer, or Designer envisions the finished construction of a building and its components.

However, actual construction often diverges from the original plans due to variations in fabrication, installation, materials and change orders, plus ever-evolving tenant improvements and mechanical implementations. This is especially prevalent in commercial, institutional, flex, and multi-occupant facilities, often leading to significant discrepancies between real-world buildings and their own construction drawings. Because of this, as-built measurement is crucial in order for stakeholders to maintain a current and reliable understanding of their building(s).

In recent years, advancements in Reality Capture and LIDAR technology have revolutionized the acquisition and utilization of as-built data. These technologies enable the rapid collection of spatially accurate point clouds, which are easily imported into CAD and BIM systems to create as-built plans and digital twins. This documentation is utilized by building owners and their assignees to inform project management, leasing, operations, and marketing. For architects, engineers, builders, and project teams, as-built scans, drawings, and models support enhanced predictability, site awareness, clash detection, and deviation analysis throughout the construction process.

Maintaining accurate as-built records is essential, as outdated or incomplete building information can lead to costly transactional errors, construction delays, and operational inefficiencies. For older facilities, as-built architectural drawings are often outdated or missing, whereas for newer buildings, establishing a dependable as-built baseline is key for effective building management in the future. As building configurations evolve over time, regular updates to as-built records ensure their accuracy, optimizing asset performance.