The short answer: we can’t guarantee their accuracy, so we don’t include them.
Scan Drafter and Matterport-derived plans are calculated from the interior perimeter of the home. For single-family homes, this matters a great deal when it comes to square footage. Why? Because square footage should be calculated to the exterior walls, which requires knowing the wall thickness.. Automated tools assume a standard wall thickness rather than measuring it. In addition to this, they can’t apply the judgement-based rules around grade changes, landings, bump-outs, and other features that a trained draftsperson knows how to handle.
In our own testing, we found an average 11.48% Gross Living Area (GLA) delta between our professionally drafted plans and CubiCasa’s calculations. That gap isn’t about scanning hardware — it’s about methodology.
In short, we made the decision to not include square footage figures when we know they carry the potential for that margin of error. Doing so wouldn’t serve our clients or their buyers well.