As-built drawings: what you actually received, and why it is already out of date

As-built drawings are the construction documents a contractor marks up during the build to record what was actually installed, not what was designed. Most facilities leads inherit these drawings from a closeout handover rather than commissioning them, which is where the trouble starts: the set you received is probably not the set you think it is, and it stopped being accurate almost immediately.

As-built drawings vs record drawings#

As-built drawings and record drawings are different deliverables from different parties at different times. As-builts are the contractor’s own annotated construction documents, marked up on site, traditionally in red ink, which is why people call them redlines. Record drawings are the formal set the architect or engineer produces after construction finishes, incorporating those markups into professionally drafted sheets. When an owner says "send me the as-builts," they almost always want record drawings, and a stack of scanned redlines is the input, not the deliverable.

What a complete record set contains#

A complete record set describes every building system, not only the floor plan. The most common closeout failure is receiving a full architectural set and almost nothing else, which is backwards from what a facilities team needs: architectural sheets tell you where the walls are, while mechanical, electrical, plumbing, and fire protection sheets tell you what will break, what it connects to, and what it costs to reach.

• Architectural, including reflected ceiling plans and door and hardware schedules
• Structural, including framing plans and field-modified connections
• Mechanical, including equipment schedules, model and serial numbers, and control zones
• Electrical, including panel schedules and circuit directories
• Plumbing, including riser diagrams and shutoff locations
• Fire protection and life safety, including sprinkler and alarm device layout
• Site and civil, including utility entry points and drainage

Why the set is already out of date#

The record set was accurate for approximately one day. Since handover, the building has changed continuously and the drawings have not: a rooftop unit swapped for a different model, a tenant buildout that moved three partitions, a code retrofit that added emergency lighting. Each change was legitimate and never made it back into a drawing. Across a portfolio of dozens or hundreds of locations, that drift compounds quietly, which is exactly the gap our CAD and plan intelligence work is built to close.

Four decisions that break on stale drawings#

1. 01Scoping a replacement, priced from capacity and routing that no longer match what is installed
2. 02Remediating a compliance gap against a plan that does not reflect the physical condition on site
3. 03Defending a warranty or responsibility claim without documentation of who changed what
4. 04Measuring space for a sublease or renewal from drawings that predate two reconfigurations

Who owns keeping the record current#

Nobody, by default. The general contractor’s obligation ends at closeout, the design team’s ends when the record set is issued, and post-occupancy changes are made by vendors with no drawing obligation at all. Fixing this is contractual: make the record set a payment condition rather than a closeout courtesy, extend the obligation to every vendor whose work alters a building system, and keep the record where the work happens rather than in a project archive nobody in operations can search. For the underlying obligations, see our lease administration platform.