What are as-constructed drawings?
As-constructed drawings are drawings updated to reflect what was actually built or installed, then handed over as the record set at project completion. They capture the changes made during construction, so the final set matches the asset as it stands rather than the design as it was first drawn.
The set is often called the as-built set, and it sits at the heart of the record handed to the asset owner. It is the drawing everyone works from once the contractor has left site.
How they work for asset owners.
During construction the work moves away from the issued-for-construction set. Site conditions, variations, and field decisions all change what gets built. The contractor marks up those changes, and the set is brought up to as-constructed at practical completion.
For the asset owner, the as-constructed set becomes the record they operate and maintain the asset from for its whole life. It is handed over alongside the rest of the record: the operation and maintenance manuals, the warranties, and the submittal packages. Every future upgrade, audit, and repair starts from it, so a missing or wrong drawing carries a cost for years.
As-constructed sets that arrive complete.
Handover runs through Lunr, so the as-constructed set arrives complete and stays that way. Every package is validated against a manifest, so a missing file is caught on upload rather than in an audit two years later. Title-block tags are read from the drawing itself and applied as metadata, so nobody retypes them.
Transmittals track themselves through sent, received, and acknowledged, so the proof of what was issued is kept for you. When the project ends, the record stays with the asset, so the as-constructed set remains under control for whoever needs it next.
See how handover worksKeep reading.
How the record set comes together across the life of a project.
Keeping site changes flowing back into the record as they happen.
Validate every package against a manifest and take handover that arrives complete.
The related term for a set of documents issued for review and record.
Questions about as-constructed drawings.
- What is the difference between as-constructed and as-built drawings?
- They describe the same thing: drawings updated to show what was actually built or installed. As-constructed is the term used across Australian projects, and as-built is common elsewhere. Both name the record set handed over at completion, updated from the issued-for-construction set to match the asset as it stands.
- Who produces as-constructed drawings?
- The contractor usually marks up the changes made during construction, site by site, and produces the as-constructed set from those redlines. The design consultants may verify the set before it is handed to the asset owner as part of the record set at project completion.
- Why do as-constructed drawings matter to asset owners?
- The owner operates, maintains, and modifies the asset from the as-constructed set for its whole life. When a drawing is missing or does not match what was built, maintenance, audits, and future works all start from the wrong picture, so the record set has to be complete and correct at handover.
Take an as-constructed set that arrives complete.
Book a walkthrough with someone who knows what a transmittal and an as-constructed set are, and watch the record stay with the asset.
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