Most organisations don't start with a blank BIM slate -- they start with decades of 2D CAD drawings, as-builts, and scanned PDFs that still describe real, occupied buildings. Migrating that archive into intelligent BIM models is less about redrawing and more about deciding what level of intelligence each asset actually needs.

Not every drawing needs the same treatment

A facilities team maintaining a single building benefits from richly parametric families with embedded asset data. A developer digitising a portfolio for early feasibility studies needs speed and consistent geometry far more than metadata depth. Treating every migration the same way wastes budget in one direction or the other.

Where migrations go wrong

The most common failure isn't geometric accuracy -- it's inconsistent standards. When drawings are converted piecemeal by different people over time, the resulting models drift: naming conventions diverge, family libraries duplicate, and the model becomes harder to maintain than the drawings it replaced.

Our approach

Our CAD to BIM Services establish a single modelling standard before conversion begins, so a portfolio migrated over months still reads as one consistent model at the end.