Why small moves still drift over budget
Smaller moves can still overrun when loading is slower than expected. Hidden cost usually comes from the minutes that repeat: extra walks from the van, slower entry into the building, awkward furniture or access details that were never flagged.
The avoidable problems to flag early
Tell the platform about gates, stairs, communal entrances, codes, key timing and whether the van may need to work from farther away than expected. Those are the details that usually stop hidden cost building up on the day.