If you are taking over a newly built commercial building, the as-built drawings you receive at handover are the record you will rely on for years. A complete set now saves time the first time something needs to be traced or repaired.
Why as-builts matter after handover
Design drawings show what was planned. As-built drawings show what was actually installed, including the changes made during construction that never made it back onto the original set. A building owner without accurate as-builts is at a disadvantage the first time something needs to be traced, repaired or expanded, often years after the contractor who built it has moved on.
What should be marked up
Every deviation from the design drawings needs to be captured: rerouted conduit, relocated panels or devices, and any change made in the field to resolve a conflict with another trade. This should be tracked through construction, not reconstructed from memory at the end of the project.
Panel schedules
Updated, accurate panel schedules are one of the most used documents after handover. Every circuit should be labelled with what it actually serves, not what it was originally designed to serve if that changed during construction. A mislabeled panel schedule costs time and money the first time someone needs to isolate a circuit safely.
Underground and concealed work
Duct banks, underground conduit runs and anything concealed behind finishes should be documented with dimensions tied to a fixed reference point, such as a building corner or column line. This is the record that prevents someone from cutting into a live underground feeder years later during unrelated site work.
Equipment data and warranties
A complete handover package includes equipment cut sheets, model and serial numbers, warranty start dates and any manufacturer startup or commissioning documentation. This should be organized and handed to the owner, not left scattered across submittals that get filed away and forgotten.
Digital and paper records
Ask for as-built drawings in an editable digital format, not only as a scanned or printed set. A digital file can be updated the next time the building changes, which keeps the record useful for years rather than becoming outdated the first time a tenant fit-up or renovation happens after handover. Confirm the file format works with whatever software your facility team already uses.
Who should receive copies
Decide who holds the as-built record: the building owner, the property manager, and often the local authority having jurisdiction for their own permit file. If more than one party needs a copy, say so before closeout so distribution happens once, correctly, rather than being chased down later by whoever discovers they were left off the list.
Getting it at the right time
As-built information is easiest to capture accurately during construction, as changes happen, rather than reconstructed at closeout under schedule pressure. This is part of what a design-build team can manage from day one. Ask your contractor how they track field changes through the project, and confirm the as-built deliverable format before construction starts, not after it is finished.
Reviewing the set before closeout
Before final sign-off, walk through the as-built set against the actual installation, even briefly, rather than accepting it on the strength of the contractor's word alone. A short review, checking a sample of panel labels and a few marked-up changes against what is physically installed, catches gaps while the contractor is still on site to correct them, instead of after they have moved on to the next project.
Setting expectations at the start
The clearest as-built packages come from contracts that describe the deliverable up front: format, content and timing for handover, agreed before construction begins rather than negotiated at the end. Ask your contractor to walk through what their standard as-built package includes before signing, so there is no ambiguity about what "as-built drawings" means when the project is finished.
Talk to Puffin Power
If you want to know what a complete electrical handover package should include for your project, contact Puffin Power. Our turnkey electrical projects include documented as-builts as part of closeout.
Published 2026-09-23 · About 3 minute read