An order starts with the address. Enter the install postcode and choose the property. The result is for that building, not the whole postcode.
Ofcom predicted speeds are shown as Basic, Superfast, or Ultrafast, and a Broadbent plan is suggested. Those figures are a prediction. They are not a confirmed line.
The network is confirmed before install. If that product is not available, the team contacts you with alternatives. The check does not book an engineer or take payment.