The fear that keeps people from adopting scanning is the one where the eleventh room fails and you start over. You do not.
Rooms are the unit of work
A whole-house model in Scanstead is an assembly of room captures that share a coordinate frame. That structure is the point: each room is its own capture with its own geometry, and a room that came back wrong can be replaced without touching the ten that came back right.
The on-site rescan
If you catch it while you are in the house — which is why the two-minute check before you leave matters — a rescan is the cheapest fix available. Walk back into the room, capture it again more carefully, and let the new capture take the old one's place. Two minutes.
What causes a room to need redoing
In practice, a short list:
- A mirror or glass wall confused the wall line
- The sweep was too fast and a wall came back incomplete
- A door was closed and part of the space never got seen
- Someone walked through the capture mid-scan
Each of those is a thirty-second behavior change on the second attempt.
Keep the alignment
The one thing to protect is the relationship between rooms. When you rescan, enter the room through the same doorway you did the first time and capture the doorway as part of it. That shared threshold is what lets the new room sit back into the house correctly rather than floating off at an angle.
If you find it from the office
Then it is a drive, and that is the real cost of skipping the on-site check. For a bid, you can often work around it — take the room's dimensions from the plan and note the assumption. For documentation you are delivering, go back.
A scan is not an all-or-nothing artifact. That is most of why it is practical.