As-Built Drawings vs Record Drawings: What's the Difference?
As-built drawings and record drawings are not the same document, even though the terms get used interchangeably on job sites every day. As-built drawings capture the physical conditions of a structure as it actually exists - verified against the field. Record drawings are the closeout package the contractor hands over: the original construction documents marked up to reflect changes, change orders, and field decisions made during the build. The distinction matters most when you need to trust the data - for a renovation, a building sale, or a code compliance audit.
What Are As-Built Drawings?
As-built drawings document what was actually constructed, measured and verified against the physical building. In traditional practice, the contractor maintained a set of working drawings in red ink, noting deviations from the design as the project progressed. In modern practice - especially on commercial, industrial, and institutional buildings - as-builts increasingly come from independent field measurement: 3D laser scanning, total station survey, or a combination of both.
The defining quality of a true as-built drawing is that it reflects field-verified geometry. Wall thicknesses, beam centerlines, pipe runs, and duct offsets are all taken from what is physically there, not from what was designed or what the contractor reported. That distinction matters the moment the next team cuts a wall or threads new utilities through a ceiling plenum.
Deliverable formats vary by downstream use: AutoCAD DWG floor plans and elevations for basic renovation, RVT (Revit) or IFC for BIM-integrated projects, and E57 or RCP/RCS point cloud archives for teams that want the raw field data alongside the drawn output.
What Are Record Drawings?
Record drawings - sometimes called “as-constructed record drawings” - are the official project closeout set compiled by the architect from the contractor’s field markups, change orders, and submittal records. Under AIA A201-2017 (Section 3.11), the contractor is required to maintain an up-to-date marked set of documents as a record of the work as constructed and deliver that set to the architect at project completion.
The architect then incorporates those markups into the construction documents. Because the source material is the contractor’s self-reported redlines, the AIA explicitly states that the architect is not responsible for the accuracy or completeness of those record drawings. They represent what the contractor says was built, not what a third-party field measurement confirms.
Record drawings are the authoritative project history document. They capture intent, design decisions, product substitutions, and change orders in an organized package. They are not, however, a substitute for field-verified measurement when renovation accuracy is critical.
Side-by-Side: Key Differences
| As-Built Drawings | Record Drawings | |
|---|---|---|
| Who creates them | Field survey team or scanner; contractor in traditional practice | Architect, from contractor’s redline markups |
| Source of truth | Physical measurement of constructed conditions | Contractor’s field notes, change orders, submittals |
| Field-verified geometry | Yes (when scan-produced) | Not independently verified |
| When delivered | During or after construction | At project closeout |
| Primary use | Renovation, MEP coordination, facility management | Project record, permit archive, legal documentation |
Who Is Responsible for Each?
Under standard AIA contract structure, responsibility splits clearly. The contractor (AIA A201, Section 3.11) maintains the as-built markups during construction and delivers them to the architect. The architect compiles the record drawing set from those markups, typically as an additional service with explicit disclaimers on accuracy since the drawings depend on contractor-furnished information.
The owner bears the practical risk when neither document is truly field-verified. A record drawing that says a column is at grid intersection C-4 is only as accurate as the contractor’s pencil mark. If that column is actually 3 inches east and a new tenant’s demising wall lands on it, the owner and their GC absorb the rework cost.
When the owner commissions independent as-built documentation through 3D laser scanning, field verification is no longer dependent on the contractor’s diligence. The scanner captures what exists, and the drawings come from that data.
Are As-Built Drawings Legally Required?
There is no single federal mandate requiring as-built drawings for all construction in the US. Requirements depend on jurisdiction, project type, and contract. Several contexts do impose them:
- Some AHJs (Authorities Having Jurisdiction) require stamped as-builts as a condition of certificate of occupancy, particularly for utilities, MEP systems, or septic installations.
- Federal and state agency projects (GSA, DoD, VA) routinely mandate as-builts at specified LOA (Level of Accuracy) per USIBD or facility standards.
- Commercial leases and property transactions increasingly require verified existing-conditions documentation before tenant improvements or sale.
- Environmental permits and OSHA process-safety programs often require up-to-date facility drawings as part of compliance.
For most private commercial projects, the requirement lives in the contract, not in statute. But “not legally required” is a narrow argument when the absence of accurate drawings causes a construction dispute or a design error.
How 3D Laser Scanning Produces Accurate As-Builts
A Trimble X7 scanner captures up to 500,000 points per second from a single fixed position. On a typical commercial project, the crew sets stations every 15 to 25 meters, rotating through the floor plate and key vertical sections. Each station produces a sphere of XYZ coordinates accurate to 1-3mm at range. Multiple stations are registered together - using target-based or cloud-to-cloud algorithms - into a unified point cloud delivered in E57 or RCP/RCS format.
From that registered point cloud, the modeling team (working through WeAre Capture’s partner network) traces walls, floors, structural elements, and MEP runs into a DWG or RVT file at the level of detail the project requires. LOA 20 (USIBD) covers basic floor plans and reflected ceiling layouts; LOA 30 or 40 serves renovation work where 1/4-inch precision matters for prefabrication. The resulting as-built drawings are derived from direct physical measurement, not contractor self-report.
A single-story commercial building of 10,000 to 15,000 square feet typically takes one scan day in the field. Multi-story structures, tight utility rooms, or active facilities requiring after-hours access add time. The cost of as-built drawings depends on scan scope and the level of modeling detail needed.
Learn more about what a complete scan deliverable includes in our post on what as-built drawings include and about existing conditions documentation for renovation projects.
When to Use Which
Use record drawings when you need the authoritative project history: understanding the design intent, tracing a change order, or satisfying a permit archive requirement. They are the correct document for legal and contractual questions about what was approved and built.
Use scan-verified as-built drawings when you need to trust the geometry: planning a renovation, coordinating new MEP against existing structure, calculating areas for a lease, or handing a building over to a facility management team. If the stakes involve cutting steel or pouring concrete based on dimensions, independent field verification is the safer starting point.
Both documents serve a role. The mistake is treating record drawings as a substitute for field measurement when renovation tolerances or interference checking are in play.
Get a quote for as-built documentation on your project.
Frequently Asked Questions
What are as-built drawings?
As-built drawings show the physical conditions of a building as it was actually constructed, based on field measurement. In modern practice they are often produced from 3D laser scan data, giving millimeter-level accuracy on walls, slabs, columns, and MEP systems. They differ from design drawings, which show what was planned.
Who is responsible for as-built drawings?
Under AIA A201-2017 (Section 3.11), the contractor is required to maintain marked construction documents recording field changes and deliver them to the architect at project closeout. The architect compiles the record drawing set from those markups but is not responsible for their field accuracy. When the owner wants independently verified as-built drawings - not just contractor self-report - that work is typically commissioned separately, often through a survey or scanning firm.
Are as-built drawings legally required?
Not universally. Requirements depend on jurisdiction, project type, and contract terms. Some AHJs require as-built or record drawings for a certificate of occupancy, particularly for utilities and MEP systems. Federal agency projects often mandate them at specified accuracy levels. Commercial leases and property transactions increasingly require them in practice even when no statute demands them.
What is the difference between as-built drawings and record drawings?
Record drawings are the official closeout set compiled by the architect from the contractor’s field markups and change orders - the project record as reported. As-built drawings, in the modern sense, are field-verified: produced by direct measurement of physical conditions. Record drawings document project history; as-built drawings verify current geometry.
What is scan to BIM?
Scan to BIM is the workflow of converting a 3D laser scan point cloud into a Building Information Model (Revit, IFC) at a specified LOD (Level of Development). LOD 200 captures overall massing and major elements; LOD 300 adds accurate geometry for coordination and fabrication. As-built scan-to-BIM projects typically target LOD 300 for renovation work.
Last reviewed: May 2026.