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If you've worked in construction for any length of time, you've heard both terms. But the distinction between as-built drawings and construction drawings is one of the most practically important concepts in the industry — and one that's frequently blurry in the field.
Construction drawings (also called design drawings, contract drawings, or working drawings) are the documents that define what is to be built. They're produced by architects, engineers, and designers before construction begins and serve as the instruction set for the work.
Construction drawings include:
These drawings represent design intent — what the building should look like when complete.
As-built drawings (also called record drawings) are updated versions of the construction drawings that reflect what was actually constructed. They capture the inevitable differences between the design intent and the finished building.
During any construction project, things change. Pipes get rerouted to avoid conflicts. Walls shift to accommodate structural conditions discovered during demolition. Dimensions change when field conditions don't match survey data. Material substitutions happen. All of these changes need to be documented.
As-built drawings capture:
The distance between construction drawings and as-built drawings is where most post-construction problems originate:
Renovation conflicts. A renovation contractor opens a wall expecting to find a pipe where the construction drawings say it should be. It's not there — it was moved during the original construction but the drawings were never updated. This creates delay, additional cost, and potential damage.
Insurance claims. A water damage insurer needs to understand the existing conditions of a building before processing a claim. If the as-builts don't exist or are inaccurate, the claims process is slower and disputes are more common.
Facility management failures. A building manager needs to locate a shut-off valve during an emergency. The construction drawings show its location. But the valve was moved during installation and the as-builts were never updated. The result can be thousands of dollars in water damage.
Permit and code compliance. Many jurisdictions require as-built drawings before permits can be officially closed. If the drawings don't reflect what was actually installed, the permit remains open — creating liability for everyone involved.
In most contexts, yes. Record drawings and as-built drawings are used interchangeably and refer to the same document type — a set of drawings that shows the final, as-constructed state of a building. Some contracts use one term, some use the other.
A subtle distinction sometimes made: as-built drawings are contractor-produced markups of the construction drawings noting field changes, while record drawings are a cleaner, formally updated document produced by the design team based on those markups. In practice, most projects use either term for either type.
Responsibility depends on the contract, but the general structure:
Traditional as-built capture required manual measurement and CAD updates. In 2026, field contractors are capturing as-built conditions directly from a phone.
Manifold's Orbit Measure feature lets any contractor walk a space for 60 seconds with any iOS or Android phone, upload the video, and receive a measurable 3D model accurate to within half an inch. This model can be shared with engineers, architects, and owners as the spatial as-built record — no specialist hardware, no CAD software, no return site visits required.
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